[gentoo-commits] proj/linux-patches:4.9 commit in: /

[Mike Pagano]

commit:     6e79f651605de012d8a78a3dde1bab966017a0cb
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Jan 27 11:41:33 2022 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Jan 27 11:41:33 2022 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=6e79f651

Linux patch 4.9.298

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |    4 +
 1297_linux-4.9.298.patch | 4800 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 4804 insertions(+)

diff --git a/0000_README b/0000_README
index 124bfa64..52cd88fb 100644
--- a/0000_README
+++ b/0000_README
@@ -1231,6 +1231,10 @@ Patch:  1296_linux-4.9.297.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.9.297
 
+Patch:  1297_linux-4.9.298.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.9.298
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1297_linux-4.9.298.patch b/1297_linux-4.9.298.patch
new file mode 100644
index 00000000..26807c93
--- /dev/null
+++ b/1297_linux-4.9.298.patch
@@ -0,0 +1,4800 @@
+diff --git a/Documentation/rbtree.txt b/Documentation/rbtree.txt
+index b9d9cc57be189..9fedfedfd85fc 100644
+--- a/Documentation/rbtree.txt
++++ b/Documentation/rbtree.txt
+@@ -190,6 +190,39 @@ Example:
+   for (node = rb_first(&mytree); node; node = rb_next(node))
+ 	printk("key=%s\n", rb_entry(node, struct mytype, node)->keystring);
+ 
++Cached rbtrees
++--------------
++
++Computing the leftmost (smallest) node is quite a common task for binary
++search trees, such as for traversals or users relying on a the particular
++order for their own logic. To this end, users can use 'struct rb_root_cached'
++to optimize O(logN) rb_first() calls to a simple pointer fetch avoiding
++potentially expensive tree iterations. This is done at negligible runtime
++overhead for maintanence; albeit larger memory footprint.
++
++Similar to the rb_root structure, cached rbtrees are initialized to be
++empty via:
++
++  struct rb_root_cached mytree = RB_ROOT_CACHED;
++
++Cached rbtree is simply a regular rb_root with an extra pointer to cache the
++leftmost node. This allows rb_root_cached to exist wherever rb_root does,
++which permits augmented trees to be supported as well as only a few extra
++interfaces:
++
++  struct rb_node *rb_first_cached(struct rb_root_cached *tree);
++  void rb_insert_color_cached(struct rb_node *, struct rb_root_cached *, bool);
++  void rb_erase_cached(struct rb_node *node, struct rb_root_cached *);
++
++Both insert and erase calls have their respective counterpart of augmented
++trees:
++
++  void rb_insert_augmented_cached(struct rb_node *node, struct rb_root_cached *,
++				  bool, struct rb_augment_callbacks *);
++  void rb_erase_augmented_cached(struct rb_node *, struct rb_root_cached *,
++				 struct rb_augment_callbacks *);
++
++
+ Support for Augmented rbtrees
+ -----------------------------
+ 
+diff --git a/Makefile b/Makefile
+index 70a11157b2404..b0f683f18df71 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 9
+-SUBLEVEL = 297
++SUBLEVEL = 298
+ EXTRAVERSION =
+ NAME = Roaring Lionus
+ 
+diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
+index c2557cf43b3dc..d8bf83d732be3 100644
+--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
++++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
+@@ -25,8 +25,8 @@
+ 	#size-cells = <2>;
+ 
+ 	aliases {
+-		sdhc1 = &sdhc_1; /* SDC1 eMMC slot */
+-		sdhc2 = &sdhc_2; /* SDC2 SD card slot */
++		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
++		mmc1 = &sdhc_2; /* SDC2 SD card slot */
+ 	};
+ 
+ 	chosen { };
+diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c
+index 4f375050ab8e9..3be875a45c834 100644
+--- a/arch/mips/bcm63xx/clk.c
++++ b/arch/mips/bcm63xx/clk.c
+@@ -342,6 +342,12 @@ struct clk *clk_get_parent(struct clk *clk)
+ }
+ EXPORT_SYMBOL(clk_get_parent);
+ 
++int clk_set_parent(struct clk *clk, struct clk *parent)
++{
++	return 0;
++}
++EXPORT_SYMBOL(clk_set_parent);
++
+ unsigned long clk_get_rate(struct clk *clk)
+ {
+ 	return clk->rate;
+diff --git a/arch/mips/include/asm/octeon/cvmx-bootinfo.h b/arch/mips/include/asm/octeon/cvmx-bootinfo.h
+index 62787765575ef..ce6e5fddce0bf 100644
+--- a/arch/mips/include/asm/octeon/cvmx-bootinfo.h
++++ b/arch/mips/include/asm/octeon/cvmx-bootinfo.h
+@@ -315,7 +315,7 @@ enum cvmx_chip_types_enum {
+ 
+ /* Functions to return string based on type */
+ #define ENUM_BRD_TYPE_CASE(x) \
+-	case x: return(#x + 16);	/* Skip CVMX_BOARD_TYPE_ */
++	case x: return (&#x[16]);	/* Skip CVMX_BOARD_TYPE_ */
+ static inline const char *cvmx_board_type_to_string(enum
+ 						    cvmx_board_types_enum type)
+ {
+@@ -404,7 +404,7 @@ static inline const char *cvmx_board_type_to_string(enum
+ }
+ 
+ #define ENUM_CHIP_TYPE_CASE(x) \
+-	case x: return(#x + 15);	/* Skip CVMX_CHIP_TYPE */
++	case x: return (&#x[15]);	/* Skip CVMX_CHIP_TYPE */
+ static inline const char *cvmx_chip_type_to_string(enum
+ 						   cvmx_chip_types_enum type)
+ {
+diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c
+index 149f0513c4f5d..d1de57b86683c 100644
+--- a/arch/mips/lantiq/clk.c
++++ b/arch/mips/lantiq/clk.c
+@@ -165,6 +165,12 @@ struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec)
+ 	return NULL;
+ }
+ 
++int clk_set_parent(struct clk *clk, struct clk *parent)
++{
++	return 0;
++}
++EXPORT_SYMBOL(clk_set_parent);
++
+ static inline u32 get_counter_resolution(void)
+ {
+ 	u32 res;
+diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c
+index d8c3c159289a2..71a19d20bbb7a 100644
+--- a/arch/mips/mm/gup.c
++++ b/arch/mips/mm/gup.c
+@@ -271,7 +271,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 		next = pgd_addr_end(addr, end);
+ 		if (pgd_none(pgd))
+ 			goto slow;
+-		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
++		/*
++		 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++		 * because get_user_pages() may need to cause an early COW in
++		 * order to avoid confusing the normal COW routines. So only
++		 * targets that are already writable are safe to do by just
++		 * looking at the page tables.
++		 */
++		if (!gup_pud_range(pgd, addr, next, 1, pages, &nr))
+ 			goto slow;
+ 	} while (pgdp++, addr = next, addr != end);
+ 	local_irq_enable();
+diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
+index 11c91697d5f9e..5b41779de2337 100644
+--- a/arch/parisc/kernel/traps.c
++++ b/arch/parisc/kernel/traps.c
+@@ -793,7 +793,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
+ 	     * unless pagefault_disable() was called before.
+ 	     */
+ 
+-	    if (fault_space == 0 && !faulthandler_disabled())
++	    if (faulthandler_disabled() || fault_space == 0)
+ 	    {
+ 		/* Clean up and return if in exception table. */
+ 		if (fixup_exception(regs))
+diff --git a/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi b/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi
+index 7f60b60601764..39b1c1fa0c81f 100644
+--- a/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi
++++ b/arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi
+@@ -78,6 +78,7 @@ fman0: fman@400000 {
+ 		#size-cells = <0>;
+ 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
+ 		reg = <0xfc000 0x1000>;
++		fsl,erratum-a009885;
+ 	};
+ 
+ 	xmdio0: mdio@fd000 {
+@@ -85,6 +86,7 @@ fman0: fman@400000 {
+ 		#size-cells = <0>;
+ 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
+ 		reg = <0xfd000 0x1000>;
++		fsl,erratum-a009885;
+ 	};
+ 
+ 	ptp_timer0: ptp-timer@fe000 {
+diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
+index 8275858a434d9..2d91ba38b4524 100644
+--- a/arch/powerpc/kernel/btext.c
++++ b/arch/powerpc/kernel/btext.c
+@@ -257,8 +257,10 @@ int __init btext_find_display(int allow_nonstdout)
+ 			rc = btext_initialize(np);
+ 			printk("result: %d\n", rc);
+ 		}
+-		if (rc == 0)
++		if (rc == 0) {
++			of_node_put(np);
+ 			break;
++		}
+ 	}
+ 	return rc;
+ }
+diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
+index 1e8c57207346e..df3af10b8cc95 100644
+--- a/arch/powerpc/kernel/prom_init.c
++++ b/arch/powerpc/kernel/prom_init.c
+@@ -2528,7 +2528,7 @@ static void __init fixup_device_tree_efika_add_phy(void)
+ 
+ 	/* Check if the phy-handle property exists - bail if it does */
+ 	rv = prom_getprop(node, "phy-handle", prop, sizeof(prop));
+-	if (!rv)
++	if (rv <= 0)
+ 		return;
+ 
+ 	/*
+diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
+index 9c6f3fd580597..31675c1d678b6 100644
+--- a/arch/powerpc/kernel/smp.c
++++ b/arch/powerpc/kernel/smp.c
+@@ -759,10 +759,12 @@ void start_secondary(void *unused)
+ 	BUG();
+ }
+ 
++#ifdef CONFIG_PROFILING
+ int setup_profiling_timer(unsigned int multiplier)
+ {
+ 	return 0;
+ }
++#endif
+ 
+ #ifdef CONFIG_SCHED_SMT
+ /* cpumask of CPUs with asymetric SMT dependancy */
+diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
+index 7ff51f96a00e8..8df43781f5db9 100644
+--- a/arch/powerpc/platforms/cell/iommu.c
++++ b/arch/powerpc/platforms/cell/iommu.c
+@@ -1107,6 +1107,7 @@ static int __init cell_iommu_fixed_mapping_init(void)
+ 			if (hbase < dbase || (hend > (dbase + dsize))) {
+ 				pr_debug("iommu: hash window doesn't fit in"
+ 					 "real DMA window\n");
++				of_node_put(np);
+ 				return -1;
+ 			}
+ 		}
+diff --git a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+index bf4a125faec66..db2ea6b6889de 100644
+--- a/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
++++ b/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+@@ -220,6 +220,7 @@ void hlwd_pic_probe(void)
+ 			irq_set_chained_handler(cascade_virq,
+ 						hlwd_pic_irq_cascade);
+ 			hlwd_irq_host = host;
++			of_node_put(np);
+ 			break;
+ 		}
+ 	}
+diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c
+index e4169d68cb328..d28c4a9269c38 100644
+--- a/arch/powerpc/platforms/powernv/opal-lpc.c
++++ b/arch/powerpc/platforms/powernv/opal-lpc.c
+@@ -401,6 +401,7 @@ void opal_lpc_init(void)
+ 		if (!of_get_property(np, "primary", NULL))
+ 			continue;
+ 		opal_lpc_chip_id = of_get_ibm_chip_id(np);
++		of_node_put(np);
+ 		break;
+ 	}
+ 	if (opal_lpc_chip_id < 0)
+diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
+index cf045f56581e3..be1e2ed6405d3 100644
+--- a/arch/s390/mm/gup.c
++++ b/arch/s390/mm/gup.c
+@@ -261,7 +261,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 
+ 	might_sleep();
+ 	start &= PAGE_MASK;
+-	nr = __get_user_pages_fast(start, nr_pages, write, pages);
++	/*
++	 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++	 * because get_user_pages() may need to cause an early COW in
++	 * order to avoid confusing the normal COW routines. So only
++	 * targets that are already writable are safe to do by just
++	 * looking at the page tables.
++	 */
++	nr = __get_user_pages_fast(start, nr_pages, 1, pages);
+ 	if (nr == nr_pages)
+ 		return nr;
+ 
+diff --git a/arch/sh/mm/gup.c b/arch/sh/mm/gup.c
+index 063c298ba56cc..7fec66e34af06 100644
+--- a/arch/sh/mm/gup.c
++++ b/arch/sh/mm/gup.c
+@@ -239,7 +239,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 		next = pgd_addr_end(addr, end);
+ 		if (pgd_none(pgd))
+ 			goto slow;
+-		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
++		/*
++		 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++		 * because get_user_pages() may need to cause an early COW in
++		 * order to avoid confusing the normal COW routines. So only
++		 * targets that are already writable are safe to do by just
++		 * looking at the page tables.
++		 */
++		if (!gup_pud_range(pgd, addr, next, 1, pages, &nr))
+ 			goto slow;
+ 	} while (pgdp++, addr = next, addr != end);
+ 	local_irq_enable();
+diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c
+index cd0e32bbcb1de..685679f879888 100644
+--- a/arch/sparc/mm/gup.c
++++ b/arch/sparc/mm/gup.c
+@@ -218,7 +218,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 		next = pgd_addr_end(addr, end);
+ 		if (pgd_none(pgd))
+ 			goto slow;
+-		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
++		/*
++		 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++		 * because get_user_pages() may need to cause an early COW in
++		 * order to avoid confusing the normal COW routines. So only
++		 * targets that are already writable are safe to do by just
++		 * looking at the page tables.
++		 */
++		if (!gup_pud_range(pgd, addr, next, 1, pages, &nr))
+ 			goto slow;
+ 	} while (pgdp++, addr = next, addr != end);
+ 
+diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h
+index a74449b5b0e31..12ad7c435e97f 100644
+--- a/arch/um/include/shared/registers.h
++++ b/arch/um/include/shared/registers.h
+@@ -16,8 +16,8 @@ extern int restore_fp_registers(int pid, unsigned long *fp_regs);
+ extern int save_fpx_registers(int pid, unsigned long *fp_regs);
+ extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
+ extern int save_registers(int pid, struct uml_pt_regs *regs);
+-extern int restore_registers(int pid, struct uml_pt_regs *regs);
+-extern int init_registers(int pid);
++extern int restore_pid_registers(int pid, struct uml_pt_regs *regs);
++extern int init_pid_registers(int pid);
+ extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
+ extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
+ extern int get_fp_registers(int pid, unsigned long *regs);
+diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c
+index 2ff8d4fe83c4f..34a5963bd7efd 100644
+--- a/arch/um/os-Linux/registers.c
++++ b/arch/um/os-Linux/registers.c
+@@ -21,7 +21,7 @@ int save_registers(int pid, struct uml_pt_regs *regs)
+ 	return 0;
+ }
+ 
+-int restore_registers(int pid, struct uml_pt_regs *regs)
++int restore_pid_registers(int pid, struct uml_pt_regs *regs)
+ {
+ 	int err;
+ 
+@@ -36,7 +36,7 @@ int restore_registers(int pid, struct uml_pt_regs *regs)
+ static unsigned long exec_regs[MAX_REG_NR];
+ static unsigned long exec_fp_regs[FP_SIZE];
+ 
+-int init_registers(int pid)
++int init_pid_registers(int pid)
+ {
+ 	int err;
+ 
+diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
+index 22a358ef1b0cd..dc06933ba63d9 100644
+--- a/arch/um/os-Linux/start_up.c
++++ b/arch/um/os-Linux/start_up.c
+@@ -334,7 +334,7 @@ void __init os_early_checks(void)
+ 	check_tmpexec();
+ 
+ 	pid = start_ptraced_child();
+-	if (init_registers(pid))
++	if (init_pid_registers(pid))
+ 		fatal("Failed to initialize default registers");
+ 	stop_ptraced_child(pid, 1, 1);
+ }
+diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
+index 82f727fbbbd2c..549f89fb3abc9 100644
+--- a/arch/x86/mm/gup.c
++++ b/arch/x86/mm/gup.c
+@@ -454,7 +454,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 		next = pgd_addr_end(addr, end);
+ 		if (pgd_none(pgd))
+ 			goto slow;
+-		if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
++		/*
++		 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++		 * because get_user_pages() may need to cause an early COW in
++		 * order to avoid confusing the normal COW routines. So only
++		 * targets that are already writable are safe to do by just
++		 * looking at the page tables.
++		 */
++		if (!gup_pud_range(pgd, addr, next, 1, pages, &nr))
+ 			goto slow;
+ 	} while (pgdp++, addr = next, addr != end);
+ 	local_irq_enable();
+diff --git a/arch/x86/um/syscalls_64.c b/arch/x86/um/syscalls_64.c
+index e6552275320bc..40ecacb2c54b3 100644
+--- a/arch/x86/um/syscalls_64.c
++++ b/arch/x86/um/syscalls_64.c
+@@ -9,6 +9,7 @@
+ #include <linux/uaccess.h>
+ #include <asm/prctl.h> /* XXX This should get the constants from libc */
+ #include <os.h>
++#include <registers.h>
+ 
+ long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr)
+ {
+@@ -32,7 +33,7 @@ long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr)
+ 	switch (code) {
+ 	case ARCH_SET_FS:
+ 	case ARCH_SET_GS:
+-		ret = restore_registers(pid, &current->thread.regs.regs);
++		ret = restore_pid_registers(pid, &current->thread.regs.regs);
+ 		if (ret)
+ 			return ret;
+ 		break;
+diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
+index 007300433cdea..1cea26a741474 100644
+--- a/drivers/acpi/acpica/exoparg1.c
++++ b/drivers/acpi/acpica/exoparg1.c
+@@ -1029,7 +1029,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
+ 						    (walk_state, return_desc,
+ 						     &temp_desc);
+ 						if (ACPI_FAILURE(status)) {
+-							goto cleanup;
++							return_ACPI_STATUS
++							    (status);
+ 						}
+ 
+ 						return_desc = temp_desc;
+diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
+index 03a2282ceb9ca..81a9c47973ce8 100644
+--- a/drivers/acpi/acpica/utdelete.c
++++ b/drivers/acpi/acpica/utdelete.c
+@@ -440,6 +440,7 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
+ 			ACPI_WARNING((AE_INFO,
+ 				      "Obj %p, Reference Count is already zero, cannot decrement\n",
+ 				      object));
++			return;
+ 		}
+ 
+ 		ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
+diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
+index 4496e7a492352..7164be9710e51 100644
+--- a/drivers/block/floppy.c
++++ b/drivers/block/floppy.c
+@@ -994,7 +994,7 @@ static DECLARE_DELAYED_WORK(fd_timer, fd_timer_workfn);
+ static void cancel_activity(void)
+ {
+ 	do_floppy = NULL;
+-	cancel_delayed_work_sync(&fd_timer);
++	cancel_delayed_work(&fd_timer);
+ 	cancel_work_sync(&floppy_work);
+ }
+ 
+@@ -3116,6 +3116,8 @@ static void raw_cmd_free(struct floppy_raw_cmd **ptr)
+ 	}
+ }
+ 
++#define MAX_LEN (1UL << MAX_ORDER << PAGE_SHIFT)
++
+ static int raw_cmd_copyin(int cmd, void __user *param,
+ 				 struct floppy_raw_cmd **rcmd)
+ {
+@@ -3153,7 +3155,7 @@ loop:
+ 	ptr->resultcode = 0;
+ 
+ 	if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
+-		if (ptr->length <= 0)
++		if (ptr->length <= 0 || ptr->length >= MAX_LEN)
+ 			return -EINVAL;
+ 		ptr->kernel_data = (char *)fd_dma_mem_alloc(ptr->length);
+ 		fallback_on_nodma_alloc(&ptr->kernel_data, ptr->length);
+diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
+index 3bf4ec60e0736..cee2de027e5ad 100644
+--- a/drivers/bluetooth/bfusb.c
++++ b/drivers/bluetooth/bfusb.c
+@@ -644,6 +644,9 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
+ 	data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
+ 	data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
+ 
++	if (!data->bulk_pkt_size)
++		goto done;
++
+ 	rwlock_init(&data->lock);
+ 
+ 	data->reassembly = NULL;
+diff --git a/drivers/char/mwave/3780i.h b/drivers/char/mwave/3780i.h
+index 9ccb6b270b071..95164246afd1a 100644
+--- a/drivers/char/mwave/3780i.h
++++ b/drivers/char/mwave/3780i.h
+@@ -68,7 +68,7 @@ typedef struct {
+ 	unsigned char ClockControl:1;	/* RW: Clock control: 0=normal, 1=stop 3780i clocks */
+ 	unsigned char SoftReset:1;	/* RW: Soft reset 0=normal, 1=soft reset active */
+ 	unsigned char ConfigMode:1;	/* RW: Configuration mode, 0=normal, 1=config mode */
+-	unsigned char Reserved:5;	/* 0: Reserved */
++	unsigned short Reserved:13;	/* 0: Reserved */
+ } DSP_ISA_SLAVE_CONTROL;
+ 
+ 
+diff --git a/drivers/char/random.c b/drivers/char/random.c
+index 2184d87623272..70ee86e034fcd 100644
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -845,8 +845,8 @@ static void do_numa_crng_init(struct work_struct *work)
+ 		crng_initialize(crng);
+ 		pool[i] = crng;
+ 	}
+-	mb();
+-	if (cmpxchg(&crng_node_pool, NULL, pool)) {
++	/* pairs with READ_ONCE() in select_crng() */
++	if (cmpxchg_release(&crng_node_pool, NULL, pool) != NULL) {
+ 		for_each_node(i)
+ 			kfree(pool[i]);
+ 		kfree(pool);
+@@ -859,8 +859,26 @@ static void numa_crng_init(void)
+ {
+ 	schedule_work(&numa_crng_init_work);
+ }
++
++static struct crng_state *select_crng(void)
++{
++	struct crng_state **pool;
++	int nid = numa_node_id();
++
++	/* pairs with cmpxchg_release() in do_numa_crng_init() */
++	pool = READ_ONCE(crng_node_pool);
++	if (pool && pool[nid])
++		return pool[nid];
++
++	return &primary_crng;
++}
+ #else
+ static void numa_crng_init(void) {}
++
++static struct crng_state *select_crng(void)
++{
++	return &primary_crng;
++}
+ #endif
+ 
+ static void crng_reseed(struct crng_state *crng, struct entropy_store *r)
+@@ -890,7 +908,7 @@ static void crng_reseed(struct crng_state *crng, struct entropy_store *r)
+ 		crng->state[i+4] ^= buf.key[i] ^ rv;
+ 	}
+ 	memzero_explicit(&buf, sizeof(buf));
+-	crng->init_time = jiffies;
++	WRITE_ONCE(crng->init_time, jiffies);
+ 	if (crng == &primary_crng && crng_init < 2) {
+ 		numa_crng_init();
+ 		crng_init = 2;
+@@ -928,12 +946,15 @@ static inline void crng_wait_ready(void)
+ static void _extract_crng(struct crng_state *crng,
+ 			  __u8 out[CHACHA20_BLOCK_SIZE])
+ {
+-	unsigned long v, flags;
+-
+-	if (crng_ready() &&
+-	    (time_after(crng_global_init_time, crng->init_time) ||
+-	     time_after(jiffies, crng->init_time + CRNG_RESEED_INTERVAL)))
+-		crng_reseed(crng, crng == &primary_crng ? &input_pool : NULL);
++	unsigned long v, flags, init_time;
++
++	if (crng_ready()) {
++		init_time = READ_ONCE(crng->init_time);
++		if (time_after(READ_ONCE(crng_global_init_time), init_time) ||
++		    time_after(jiffies, init_time + CRNG_RESEED_INTERVAL))
++			crng_reseed(crng, crng == &primary_crng ?
++				    &input_pool : NULL);
++	}
+ 	spin_lock_irqsave(&crng->lock, flags);
+ 	if (arch_get_random_long(&v))
+ 		crng->state[14] ^= v;
+@@ -945,15 +966,7 @@ static void _extract_crng(struct crng_state *crng,
+ 
+ static void extract_crng(__u8 out[CHACHA20_BLOCK_SIZE])
+ {
+-	struct crng_state *crng = NULL;
+-
+-#ifdef CONFIG_NUMA
+-	if (crng_node_pool)
+-		crng = crng_node_pool[numa_node_id()];
+-	if (crng == NULL)
+-#endif
+-		crng = &primary_crng;
+-	_extract_crng(crng, out);
++	_extract_crng(select_crng(), out);
+ }
+ 
+ /*
+@@ -982,15 +995,7 @@ static void _crng_backtrack_protect(struct crng_state *crng,
+ 
+ static void crng_backtrack_protect(__u8 tmp[CHACHA20_BLOCK_SIZE], int used)
+ {
+-	struct crng_state *crng = NULL;
+-
+-#ifdef CONFIG_NUMA
+-	if (crng_node_pool)
+-		crng = crng_node_pool[numa_node_id()];
+-	if (crng == NULL)
+-#endif
+-		crng = &primary_crng;
+-	_crng_backtrack_protect(crng, tmp, used);
++	_crng_backtrack_protect(select_crng(), tmp, used);
+ }
+ 
+ static ssize_t extract_crng_user(void __user *buf, size_t nbytes)
+@@ -1914,7 +1919,7 @@ static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
+ 		if (crng_init < 2)
+ 			return -ENODATA;
+ 		crng_reseed(&primary_crng, &input_pool);
+-		crng_global_init_time = jiffies - 1;
++		WRITE_ONCE(crng_global_init_time, jiffies - 1);
+ 		return 0;
+ 	default:
+ 		return -EINVAL;
+diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c
+index 47e114ac09d01..ff1e788f92767 100644
+--- a/drivers/crypto/qce/sha.c
++++ b/drivers/crypto/qce/sha.c
+@@ -544,8 +544,8 @@ static int qce_ahash_register_one(const struct qce_ahash_def *def,
+ 
+ 	ret = crypto_register_ahash(alg);
+ 	if (ret) {
+-		kfree(tmpl);
+ 		dev_err(qce->dev, "%s registration failed\n", base->cra_name);
++		kfree(tmpl);
+ 		return ret;
+ 	}
+ 
+diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
+index a505be9ef96da..c15ca560fe60d 100644
+--- a/drivers/dma/at_xdmac.c
++++ b/drivers/dma/at_xdmac.c
+@@ -100,6 +100,7 @@
+ #define		AT_XDMAC_CNDC_NDE		(0x1 << 0)		/* Channel x Next Descriptor Enable */
+ #define		AT_XDMAC_CNDC_NDSUP		(0x1 << 1)		/* Channel x Next Descriptor Source Update */
+ #define		AT_XDMAC_CNDC_NDDUP		(0x1 << 2)		/* Channel x Next Descriptor Destination Update */
++#define		AT_XDMAC_CNDC_NDVIEW_MASK	GENMASK(28, 27)
+ #define		AT_XDMAC_CNDC_NDVIEW_NDV0	(0x0 << 3)		/* Channel x Next Descriptor View 0 */
+ #define		AT_XDMAC_CNDC_NDVIEW_NDV1	(0x1 << 3)		/* Channel x Next Descriptor View 1 */
+ #define		AT_XDMAC_CNDC_NDVIEW_NDV2	(0x2 << 3)		/* Channel x Next Descriptor View 2 */
+@@ -232,15 +233,15 @@ struct at_xdmac {
+ 
+ /* Linked List Descriptor */
+ struct at_xdmac_lld {
+-	dma_addr_t	mbr_nda;	/* Next Descriptor Member */
+-	u32		mbr_ubc;	/* Microblock Control Member */
+-	dma_addr_t	mbr_sa;		/* Source Address Member */
+-	dma_addr_t	mbr_da;		/* Destination Address Member */
+-	u32		mbr_cfg;	/* Configuration Register */
+-	u32		mbr_bc;		/* Block Control Register */
+-	u32		mbr_ds;		/* Data Stride Register */
+-	u32		mbr_sus;	/* Source Microblock Stride Register */
+-	u32		mbr_dus;	/* Destination Microblock Stride Register */
++	u32 mbr_nda;	/* Next Descriptor Member */
++	u32 mbr_ubc;	/* Microblock Control Member */
++	u32 mbr_sa;	/* Source Address Member */
++	u32 mbr_da;	/* Destination Address Member */
++	u32 mbr_cfg;	/* Configuration Register */
++	u32 mbr_bc;	/* Block Control Register */
++	u32 mbr_ds;	/* Data Stride Register */
++	u32 mbr_sus;	/* Source Microblock Stride Register */
++	u32 mbr_dus;	/* Destination Microblock Stride Register */
+ };
+ 
+ /* 64-bit alignment needed to update CNDA and CUBC registers in an atomic way. */
+@@ -345,9 +346,6 @@ static void at_xdmac_start_xfer(struct at_xdmac_chan *atchan,
+ 
+ 	dev_vdbg(chan2dev(&atchan->chan), "%s: desc 0x%p\n", __func__, first);
+ 
+-	if (at_xdmac_chan_is_enabled(atchan))
+-		return;
+-
+ 	/* Set transfer as active to not try to start it again. */
+ 	first->active_xfer = true;
+ 
+@@ -363,7 +361,8 @@ static void at_xdmac_start_xfer(struct at_xdmac_chan *atchan,
+ 	 */
+ 	if (at_xdmac_chan_is_cyclic(atchan))
+ 		reg = AT_XDMAC_CNDC_NDVIEW_NDV1;
+-	else if (first->lld.mbr_ubc & AT_XDMAC_MBR_UBC_NDV3)
++	else if ((first->lld.mbr_ubc &
++		  AT_XDMAC_CNDC_NDVIEW_MASK) == AT_XDMAC_MBR_UBC_NDV3)
+ 		reg = AT_XDMAC_CNDC_NDVIEW_NDV3;
+ 	else
+ 		reg = AT_XDMAC_CNDC_NDVIEW_NDV2;
+@@ -428,13 +427,12 @@ static dma_cookie_t at_xdmac_tx_submit(struct dma_async_tx_descriptor *tx)
+ 	spin_lock_irqsave(&atchan->lock, irqflags);
+ 	cookie = dma_cookie_assign(tx);
+ 
++	list_add_tail(&desc->xfer_node, &atchan->xfers_list);
++	spin_unlock_irqrestore(&atchan->lock, irqflags);
++
+ 	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
+ 		 __func__, atchan, desc);
+-	list_add_tail(&desc->xfer_node, &atchan->xfers_list);
+-	if (list_is_singular(&atchan->xfers_list))
+-		at_xdmac_start_xfer(atchan, desc);
+ 
+-	spin_unlock_irqrestore(&atchan->lock, irqflags);
+ 	return cookie;
+ }
+ 
+diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
+index eb3a1f42ab065..e8b2d3e31de80 100644
+--- a/drivers/dma/mmp_pdma.c
++++ b/drivers/dma/mmp_pdma.c
+@@ -722,12 +722,6 @@ static int mmp_pdma_config(struct dma_chan *dchan,
+ 
+ 	chan->dir = cfg->direction;
+ 	chan->dev_addr = addr;
+-	/* FIXME: drivers should be ported over to use the filter
+-	 * function. Once that's done, the following two lines can
+-	 * be removed.
+-	 */
+-	if (cfg->slave_id)
+-		chan->drcmr = cfg->slave_id;
+ 
+ 	return 0;
+ }
+diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
+index 3f56f9ca44824..5bd1ade187d3f 100644
+--- a/drivers/dma/pxa_dma.c
++++ b/drivers/dma/pxa_dma.c
+@@ -975,13 +975,6 @@ static void pxad_get_config(struct pxad_chan *chan,
+ 		*dcmd |= PXA_DCMD_BURST16;
+ 	else if (maxburst == 32)
+ 		*dcmd |= PXA_DCMD_BURST32;
+-
+-	/* FIXME: drivers should be ported over to use the filter
+-	 * function. Once that's done, the following two lines can
+-	 * be removed.
+-	 */
+-	if (chan->cfg.slave_id)
+-		chan->drcmr = chan->cfg.slave_id;
+ }
+ 
+ static struct dma_async_tx_descriptor *
+diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
+index 986248f7011aa..c479280590e42 100644
+--- a/drivers/gpio/gpiolib-acpi.c
++++ b/drivers/gpio/gpiolib-acpi.c
+@@ -675,10 +675,17 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
+ 			irq_flags = acpi_dev_get_irq_type(info.triggering,
+ 							  info.polarity);
+ 
+-			/* Set type if specified and different than the current one */
+-			if (irq_flags != IRQ_TYPE_NONE &&
+-			    irq_flags != irq_get_trigger_type(irq))
+-				irq_set_irq_type(irq, irq_flags);
++			/*
++			 * If the IRQ is not already in use then set type
++			 * if specified and different than the current one.
++			 */
++			if (can_request_irq(irq, irq_flags)) {
++				if (irq_flags != IRQ_TYPE_NONE &&
++				    irq_flags != irq_get_trigger_type(irq))
++					irq_set_irq_type(irq, irq_flags);
++			} else {
++				dev_dbg(&adev->dev, "IRQ %d already in use\n", irq);
++			}
+ 
+ 			return irq;
+ 		}
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+index eb79d0d3d34f1..7264169d5f2a7 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+@@ -404,6 +404,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder)
+ 	    native_mode->vdisplay != 0 &&
+ 	    native_mode->clock != 0) {
+ 		mode = drm_mode_duplicate(dev, native_mode);
++		if (!mode)
++			return NULL;
++
+ 		mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
+ 		drm_mode_set_name(mode);
+ 
+@@ -418,6 +421,9 @@ amdgpu_connector_lcd_native_mode(struct drm_encoder *encoder)
+ 		 * simpler.
+ 		 */
+ 		mode = drm_cvt_mode(dev, native_mode->hdisplay, native_mode->vdisplay, 60, true, false, false);
++		if (!mode)
++			return NULL;
++
+ 		mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
+ 		DRM_DEBUG_KMS("Adding cvt approximation of native panel mode %s\n", mode->name);
+ 	}
+diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
+index 07d2a8e7f78c3..202c00b17df2d 100644
+--- a/drivers/gpu/drm/i915/intel_pm.c
++++ b/drivers/gpu/drm/i915/intel_pm.c
+@@ -2274,9 +2274,9 @@ static void snb_wm_latency_quirk(struct drm_device *dev)
+ 	 * The BIOS provided WM memory latency values are often
+ 	 * inadequate for high resolution displays. Adjust them.
+ 	 */
+-	changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) |
+-		ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) |
+-		ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12);
++	changed = ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12);
++	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12);
++	changed |= ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12);
+ 
+ 	if (!changed)
+ 		return;
+diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+index db35ab5883acd..d3bfd7912a994 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
++++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+@@ -105,12 +105,9 @@ nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
+ 	else
+ 		nvbe->ttm.ttm.func = &nv50_sgdma_backend;
+ 
+-	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
+-		/*
+-		 * A failing ttm_dma_tt_init() will call ttm_tt_destroy()
+-		 * and thus our nouveau_sgdma_destroy() hook, so we don't need
+-		 * to free nvbe here.
+-		 */
++	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page)) {
++		kfree(nvbe);
+ 		return NULL;
++	}
+ 	return &nvbe->ttm.ttm;
+ }
+diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
+index 61000e3b2e793..b55403c99d804 100644
+--- a/drivers/gpu/drm/radeon/radeon_kms.c
++++ b/drivers/gpu/drm/radeon/radeon_kms.c
+@@ -630,6 +630,8 @@ void radeon_driver_lastclose_kms(struct drm_device *dev)
+ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
+ {
+ 	struct radeon_device *rdev = dev->dev_private;
++	struct radeon_fpriv *fpriv;
++	struct radeon_vm *vm;
+ 	int r;
+ 
+ 	file_priv->driver_priv = NULL;
+@@ -642,48 +644,52 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
+ 
+ 	/* new gpu have virtual address space support */
+ 	if (rdev->family >= CHIP_CAYMAN) {
+-		struct radeon_fpriv *fpriv;
+-		struct radeon_vm *vm;
+ 
+ 		fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
+ 		if (unlikely(!fpriv)) {
+ 			r = -ENOMEM;
+-			goto out_suspend;
++			goto err_suspend;
+ 		}
+ 
+ 		if (rdev->accel_working) {
+ 			vm = &fpriv->vm;
+ 			r = radeon_vm_init(rdev, vm);
+-			if (r) {
+-				kfree(fpriv);
+-				goto out_suspend;
+-			}
++			if (r)
++				goto err_fpriv;
+ 
+ 			r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
+-			if (r) {
+-				radeon_vm_fini(rdev, vm);
+-				kfree(fpriv);
+-				goto out_suspend;
+-			}
++			if (r)
++				goto err_vm_fini;
+ 
+ 			/* map the ib pool buffer read only into
+ 			 * virtual address space */
+ 			vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
+ 							rdev->ring_tmp_bo.bo);
++			if (!vm->ib_bo_va) {
++				r = -ENOMEM;
++				goto err_vm_fini;
++			}
++
+ 			r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
+ 						  RADEON_VA_IB_OFFSET,
+ 						  RADEON_VM_PAGE_READABLE |
+ 						  RADEON_VM_PAGE_SNOOPED);
+-			if (r) {
+-				radeon_vm_fini(rdev, vm);
+-				kfree(fpriv);
+-				goto out_suspend;
+-			}
++			if (r)
++				goto err_vm_fini;
+ 		}
+ 		file_priv->driver_priv = fpriv;
+ 	}
+ 
+-out_suspend:
++	pm_runtime_mark_last_busy(dev->dev);
++	pm_runtime_put_autosuspend(dev->dev);
++	return 0;
++
++err_vm_fini:
++	radeon_vm_fini(rdev, vm);
++err_fpriv:
++	kfree(fpriv);
++
++err_suspend:
+ 	pm_runtime_mark_last_busy(dev->dev);
+ 	pm_runtime_put_autosuspend(dev->dev);
+ 	return r;
+diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
+index aee3c00f836e7..e4e24be523533 100644
+--- a/drivers/gpu/drm/ttm/ttm_tt.c
++++ b/drivers/gpu/drm/ttm/ttm_tt.c
+@@ -195,7 +195,6 @@ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev,
+ 
+ 	ttm_tt_alloc_page_directory(ttm);
+ 	if (!ttm->pages) {
+-		ttm_tt_destroy(ttm);
+ 		pr_err("Failed allocating page table\n");
+ 		return -ENOMEM;
+ 	}
+@@ -228,7 +227,6 @@ int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev,
+ 	INIT_LIST_HEAD(&ttm_dma->pages_list);
+ 	ttm_dma_tt_alloc_page_directory(ttm_dma);
+ 	if (!ttm->pages) {
+-		ttm_tt_destroy(ttm);
+ 		pr_err("Failed allocating page table\n");
+ 		return -ENOMEM;
+ 	}
+diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
+index 149902619cbc8..0074091c27aa2 100644
+--- a/drivers/hid/hid-apple.c
++++ b/drivers/hid/hid-apple.c
+@@ -390,7 +390,7 @@ static int apple_input_configured(struct hid_device *hdev,
+ 
+ 	if ((asc->quirks & APPLE_HAS_FN) && !asc->fn_found) {
+ 		hid_info(hdev, "Fn key not found (Apple Wireless Keyboard clone?), disabling Fn key handling\n");
+-		asc->quirks = 0;
++		asc->quirks &= ~APPLE_HAS_FN;
+ 	}
+ 
+ 	return 0;
+diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
+index e60e41e775020..f7705a057f0f4 100644
+--- a/drivers/hid/uhid.c
++++ b/drivers/hid/uhid.c
+@@ -33,11 +33,22 @@
+ 
+ struct uhid_device {
+ 	struct mutex devlock;
++
++	/* This flag tracks whether the HID device is usable for commands from
++	 * userspace. The flag is already set before hid_add_device(), which
++	 * runs in workqueue context, to allow hid_add_device() to communicate
++	 * with userspace.
++	 * However, if hid_add_device() fails, the flag is cleared without
++	 * holding devlock.
++	 * We guarantee that if @running changes from true to false while you're
++	 * holding @devlock, it's still fine to access @hid.
++	 */
+ 	bool running;
+ 
+ 	__u8 *rd_data;
+ 	uint rd_size;
+ 
++	/* When this is NULL, userspace may use UHID_CREATE/UHID_CREATE2. */
+ 	struct hid_device *hid;
+ 	struct uhid_event input_buf;
+ 
+@@ -68,9 +79,18 @@ static void uhid_device_add_worker(struct work_struct *work)
+ 	if (ret) {
+ 		hid_err(uhid->hid, "Cannot register HID device: error %d\n", ret);
+ 
+-		hid_destroy_device(uhid->hid);
+-		uhid->hid = NULL;
++		/* We used to call hid_destroy_device() here, but that's really
++		 * messy to get right because we have to coordinate with
++		 * concurrent writes from userspace that might be in the middle
++		 * of using uhid->hid.
++		 * Just leave uhid->hid as-is for now, and clean it up when
++		 * userspace tries to close or reinitialize the uhid instance.
++		 *
++		 * However, we do have to clear the ->running flag and do a
++		 * wakeup to make sure userspace knows that the device is gone.
++		 */
+ 		uhid->running = false;
++		wake_up_interruptible(&uhid->report_wait);
+ 	}
+ }
+ 
+@@ -479,7 +499,7 @@ static int uhid_dev_create2(struct uhid_device *uhid,
+ 	void *rd_data;
+ 	int ret;
+ 
+-	if (uhid->running)
++	if (uhid->hid)
+ 		return -EALREADY;
+ 
+ 	rd_size = ev->u.create2.rd_size;
+@@ -560,7 +580,7 @@ static int uhid_dev_create(struct uhid_device *uhid,
+ 
+ static int uhid_dev_destroy(struct uhid_device *uhid)
+ {
+-	if (!uhid->running)
++	if (!uhid->hid)
+ 		return -EINVAL;
+ 
+ 	uhid->running = false;
+@@ -569,6 +589,7 @@ static int uhid_dev_destroy(struct uhid_device *uhid)
+ 	cancel_work_sync(&uhid->worker);
+ 
+ 	hid_destroy_device(uhid->hid);
++	uhid->hid = NULL;
+ 	kfree(uhid->rd_data);
+ 
+ 	return 0;
+diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
+index fbf14a14bdd43..bfce62dbe0ace 100644
+--- a/drivers/hid/wacom_wac.c
++++ b/drivers/hid/wacom_wac.c
+@@ -1693,6 +1693,10 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev,
+ 	struct hid_data* hid_data = &wacom_wac->hid_data;
+ 	int i;
+ 
++	hid_data->cc_report = 0;
++	hid_data->cc_index = -1;
++	hid_data->cc_value_index = -1;
++
+ 	for (i = 0; i < report->maxfield; i++) {
+ 		struct hid_field *field = report->field[i];
+ 		int j;
+diff --git a/drivers/hsi/hsi_core.c b/drivers/hsi/hsi_core.c
+index e9d63b966caff..4a9fd745b8cb4 100644
+--- a/drivers/hsi/hsi_core.c
++++ b/drivers/hsi/hsi_core.c
+@@ -115,6 +115,7 @@ struct hsi_client *hsi_new_client(struct hsi_port *port,
+ 	if (device_register(&cl->device) < 0) {
+ 		pr_err("hsi: failed to register client: %s\n", info->name);
+ 		put_device(&cl->device);
++		goto err;
+ 	}
+ 
+ 	return cl;
+diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
+index 96f8230cd2d33..5c32a7ef476da 100644
+--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
++++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
+@@ -49,10 +49,10 @@ enum dw_pci_ctl_id_t {
+ };
+ 
+ struct dw_scl_sda_cfg {
+-	u32 ss_hcnt;
+-	u32 fs_hcnt;
+-	u32 ss_lcnt;
+-	u32 fs_lcnt;
++	u16 ss_hcnt;
++	u16 fs_hcnt;
++	u16 ss_lcnt;
++	u16 fs_lcnt;
+ 	u32 sda_hold;
+ };
+ 
+diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
+index 0e04b27e3158d..b577c64f3b3ec 100644
+--- a/drivers/i2c/busses/i2c-i801.c
++++ b/drivers/i2c/busses/i2c-i801.c
+@@ -762,6 +762,11 @@ static int i801_block_transaction(struct i801_priv *priv,
+ 	int result = 0;
+ 	unsigned char hostc;
+ 
++	if (read_write == I2C_SMBUS_READ && command == I2C_SMBUS_BLOCK_DATA)
++		data->block[0] = I2C_SMBUS_BLOCK_MAX;
++	else if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)
++		return -EPROTO;
++
+ 	if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
+ 		if (read_write == I2C_SMBUS_WRITE) {
+ 			/* set I2C_EN bit in configuration register */
+@@ -775,16 +780,6 @@ static int i801_block_transaction(struct i801_priv *priv,
+ 		}
+ 	}
+ 
+-	if (read_write == I2C_SMBUS_WRITE
+-	 || command == I2C_SMBUS_I2C_BLOCK_DATA) {
+-		if (data->block[0] < 1)
+-			data->block[0] = 1;
+-		if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
+-			data->block[0] = I2C_SMBUS_BLOCK_MAX;
+-	} else {
+-		data->block[0] = 32;	/* max for SMBus block reads */
+-	}
+-
+ 	/* Experience has shown that the block buffer can only be used for
+ 	   SMBus (not I2C) block transactions, even though the datasheet
+ 	   doesn't mention this limitation. */
+diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
+index 90e4f839eb1cb..d153fc28e6bfb 100644
+--- a/drivers/i2c/busses/i2c-mpc.c
++++ b/drivers/i2c/busses/i2c-mpc.c
+@@ -107,23 +107,30 @@ static irqreturn_t mpc_i2c_isr(int irq, void *dev_id)
+ /* Sometimes 9th clock pulse isn't generated, and slave doesn't release
+  * the bus, because it wants to send ACK.
+  * Following sequence of enabling/disabling and sending start/stop generates
+- * the 9 pulses, so it's all OK.
++ * the 9 pulses, each with a START then ending with STOP, so it's all OK.
+  */
+ static void mpc_i2c_fixup(struct mpc_i2c *i2c)
+ {
+ 	int k;
+-	u32 delay_val = 1000000 / i2c->real_clk + 1;
+-
+-	if (delay_val < 2)
+-		delay_val = 2;
++	unsigned long flags;
+ 
+ 	for (k = 9; k; k--) {
+ 		writeccr(i2c, 0);
+-		writeccr(i2c, CCR_MSTA | CCR_MTX | CCR_MEN);
++		writeb(0, i2c->base + MPC_I2C_SR); /* clear any status bits */
++		writeccr(i2c, CCR_MEN | CCR_MSTA); /* START */
++		readb(i2c->base + MPC_I2C_DR); /* init xfer */
++		udelay(15); /* let it hit the bus */
++		local_irq_save(flags); /* should not be delayed further */
++		writeccr(i2c, CCR_MEN | CCR_MSTA | CCR_RSTA); /* delay SDA */
+ 		readb(i2c->base + MPC_I2C_DR);
+-		writeccr(i2c, CCR_MEN);
+-		udelay(delay_val << 1);
++		if (k != 1)
++			udelay(5);
++		local_irq_restore(flags);
+ 	}
++	writeccr(i2c, CCR_MEN); /* Initiate STOP */
++	readb(i2c->base + MPC_I2C_DR);
++	udelay(15); /* Let STOP propagate */
++	writeccr(i2c, 0);
+ }
+ 
+ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
+diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
+index 4b947d5cafe28..c5c175b72f21e 100644
+--- a/drivers/infiniband/core/device.c
++++ b/drivers/infiniband/core/device.c
+@@ -870,7 +870,8 @@ int ib_find_gid(struct ib_device *device, union ib_gid *gid,
+ 		for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) {
+ 			ret = ib_query_gid(device, port, i, &tmp_gid, NULL);
+ 			if (ret)
+-				return ret;
++				continue;
++
+ 			if (!memcmp(&tmp_gid, gid, sizeof *gid)) {
+ 				*port_num = port;
+ 				if (index)
+diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
+index 87bc7b0db892b..2eeac8401c927 100644
+--- a/drivers/infiniband/hw/cxgb4/qp.c
++++ b/drivers/infiniband/hw/cxgb4/qp.c
+@@ -1974,6 +1974,7 @@ int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ 	memset(attr, 0, sizeof *attr);
+ 	memset(init_attr, 0, sizeof *init_attr);
+ 	attr->qp_state = to_ib_qp_state(qhp->attr.state);
++	attr->cur_qp_state = to_ib_qp_state(qhp->attr.state);
+ 	init_attr->cap.max_send_wr = qhp->attr.sq_num_entries;
+ 	init_attr->cap.max_recv_wr = qhp->attr.rq_num_entries;
+ 	init_attr->cap.max_send_sge = qhp->attr.sq_max_sges;
+diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
+index 764e35a54457e..0aa2400db8fa0 100644
+--- a/drivers/infiniband/hw/hns/hns_roce_main.c
++++ b/drivers/infiniband/hw/hns/hns_roce_main.c
+@@ -475,6 +475,9 @@ static int hns_roce_query_gid(struct ib_device *ib_dev, u8 port_num, int index,
+ static int hns_roce_query_pkey(struct ib_device *ib_dev, u8 port, u16 index,
+ 			       u16 *pkey)
+ {
++	if (index > 0)
++		return -EINVAL;
++
+ 	*pkey = PKEY_ID;
+ 
+ 	return 0;
+@@ -553,7 +556,7 @@ static int hns_roce_mmap(struct ib_ucontext *context,
+ 		return -EINVAL;
+ 
+ 	if (vma->vm_pgoff == 0) {
+-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
++		vma->vm_page_prot = pgprot_device(vma->vm_page_prot);
+ 		if (io_remap_pfn_range(vma, vma->vm_start,
+ 				       to_hr_ucontext(context)->uar.pfn,
+ 				       PAGE_SIZE, vma->vm_page_prot))
+diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.c b/drivers/infiniband/sw/rxe/rxe_opcode.c
+index 61927c165b598..e67ed9141cd8a 100644
+--- a/drivers/infiniband/sw/rxe/rxe_opcode.c
++++ b/drivers/infiniband/sw/rxe/rxe_opcode.c
+@@ -137,7 +137,7 @@ struct rxe_opcode_info rxe_opcode[RXE_NUM_OPCODE] = {
+ 		}
+ 	},
+ 	[IB_OPCODE_RC_SEND_MIDDLE]		= {
+-		.name	= "IB_OPCODE_RC_SEND_MIDDLE]",
++		.name	= "IB_OPCODE_RC_SEND_MIDDLE",
+ 		.mask	= RXE_PAYLOAD_MASK | RXE_REQ_MASK | RXE_SEND_MASK
+ 				| RXE_MIDDLE_MASK,
+ 		.length = RXE_BTH_BYTES,
+diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
+index 386215245dfe2..85273da5da206 100644
+--- a/drivers/md/persistent-data/dm-btree.c
++++ b/drivers/md/persistent-data/dm-btree.c
+@@ -83,14 +83,16 @@ void inc_children(struct dm_transaction_manager *tm, struct btree_node *n,
+ }
+ 
+ static int insert_at(size_t value_size, struct btree_node *node, unsigned index,
+-		      uint64_t key, void *value)
+-		      __dm_written_to_disk(value)
++		     uint64_t key, void *value)
++	__dm_written_to_disk(value)
+ {
+ 	uint32_t nr_entries = le32_to_cpu(node->header.nr_entries);
++	uint32_t max_entries = le32_to_cpu(node->header.max_entries);
+ 	__le64 key_le = cpu_to_le64(key);
+ 
+ 	if (index > nr_entries ||
+-	    index >= le32_to_cpu(node->header.max_entries)) {
++	    index >= max_entries ||
++	    nr_entries >= max_entries) {
+ 		DMERR("too many entries in btree node for insert");
+ 		__dm_unbless_for_disk(value);
+ 		return -ENOMEM;
+diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c
+index ca09ad2a639c4..6fa4a68e78b0d 100644
+--- a/drivers/md/persistent-data/dm-space-map-common.c
++++ b/drivers/md/persistent-data/dm-space-map-common.c
+@@ -279,6 +279,11 @@ int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result)
+ 	struct disk_index_entry ie_disk;
+ 	struct dm_block *blk;
+ 
++	if (b >= ll->nr_blocks) {
++		DMERR_LIMIT("metadata block out of bounds");
++		return -EINVAL;
++	}
++
+ 	b = do_div(index, ll->entries_per_block);
+ 	r = ll->load_ie(ll, index, &ie_disk);
+ 	if (r < 0)
+diff --git a/drivers/media/common/saa7146/saa7146_fops.c b/drivers/media/common/saa7146/saa7146_fops.c
+index 930d2c94d5d30..2c9365a39270a 100644
+--- a/drivers/media/common/saa7146/saa7146_fops.c
++++ b/drivers/media/common/saa7146/saa7146_fops.c
+@@ -524,7 +524,7 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
+ 		ERR("out of memory. aborting.\n");
+ 		kfree(vv);
+ 		v4l2_ctrl_handler_free(hdl);
+-		return -1;
++		return -ENOMEM;
+ 	}
+ 
+ 	saa7146_video_uops.init(dev,vv);
+diff --git a/drivers/media/dvb-core/dmxdev.c b/drivers/media/dvb-core/dmxdev.c
+index 0418b5a0fb645..32a2e6ffdb097 100644
+--- a/drivers/media/dvb-core/dmxdev.c
++++ b/drivers/media/dvb-core/dmxdev.c
+@@ -1225,7 +1225,7 @@ static const struct dvb_device dvbdev_dvr = {
+ };
+ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
+ {
+-	int i;
++	int i, ret;
+ 
+ 	if (dmxdev->demux->open(dmxdev->demux) < 0)
+ 		return -EUSERS;
+@@ -1243,14 +1243,26 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
+ 					    DMXDEV_STATE_FREE);
+ 	}
+ 
+-	dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
++	ret = dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
+ 			    DVB_DEVICE_DEMUX, dmxdev->filternum);
+-	dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
++	if (ret < 0)
++		goto err_register_dvbdev;
++
++	ret = dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
+ 			    dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
++	if (ret < 0)
++		goto err_register_dvr_dvbdev;
+ 
+ 	dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
+ 
+ 	return 0;
++
++err_register_dvr_dvbdev:
++	dvb_unregister_device(dmxdev->dvbdev);
++err_register_dvbdev:
++	vfree(dmxdev->filter);
++	dmxdev->filter = NULL;
++	return ret;
+ }
+ 
+ EXPORT_SYMBOL(dvb_dmxdev_init);
+diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c
+index ddf9c44877a25..ea2eab2d5be91 100644
+--- a/drivers/media/dvb-frontends/dib8000.c
++++ b/drivers/media/dvb-frontends/dib8000.c
+@@ -4462,8 +4462,10 @@ static struct dvb_frontend *dib8000_init(struct i2c_adapter *i2c_adap, u8 i2c_ad
+ 
+ 	state->timf_default = cfg->pll->timf;
+ 
+-	if (dib8000_identify(&state->i2c) == 0)
++	if (dib8000_identify(&state->i2c) == 0) {
++		kfree(fe);
+ 		goto error;
++	}
+ 
+ 	dibx000_init_i2c_master(&state->i2c_master, DIB8000, state->i2c.adap, state->i2c.addr);
+ 
+diff --git a/drivers/media/pci/b2c2/flexcop-pci.c b/drivers/media/pci/b2c2/flexcop-pci.c
+index 4cac1fc233f28..98e94cd8bfad7 100644
+--- a/drivers/media/pci/b2c2/flexcop-pci.c
++++ b/drivers/media/pci/b2c2/flexcop-pci.c
+@@ -184,6 +184,8 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
+ 		dma_addr_t cur_addr =
+ 			fc->read_ibi_reg(fc,dma1_008).dma_0x8.dma_cur_addr << 2;
+ 		u32 cur_pos = cur_addr - fc_pci->dma[0].dma_addr0;
++		if (cur_pos > fc_pci->dma[0].size * 2)
++			goto error;
+ 
+ 		deb_irq("%u irq: %08x cur_addr: %llx: cur_pos: %08x, "
+ 			"last_cur_pos: %08x ",
+@@ -225,6 +227,7 @@ static irqreturn_t flexcop_pci_isr(int irq, void *dev_id)
+ 		ret = IRQ_NONE;
+ 	}
+ 
++error:
+ 	spin_unlock_irqrestore(&fc_pci->irq_lock, flags);
+ 	return ret;
+ }
+diff --git a/drivers/media/pci/saa7146/hexium_gemini.c b/drivers/media/pci/saa7146/hexium_gemini.c
+index be85a2c4318e7..be91a2de81dcc 100644
+--- a/drivers/media/pci/saa7146/hexium_gemini.c
++++ b/drivers/media/pci/saa7146/hexium_gemini.c
+@@ -296,7 +296,12 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d
+ 	hexium_set_input(hexium, 0);
+ 	hexium->cur_input = 0;
+ 
+-	saa7146_vv_init(dev, &vv_data);
++	ret = saa7146_vv_init(dev, &vv_data);
++	if (ret) {
++		i2c_del_adapter(&hexium->i2c_adapter);
++		kfree(hexium);
++		return ret;
++	}
+ 
+ 	vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input;
+ 	vv_data.vid_ops.vidioc_g_input = vidioc_g_input;
+diff --git a/drivers/media/pci/saa7146/hexium_orion.c b/drivers/media/pci/saa7146/hexium_orion.c
+index dc07ca37ebd06..e8e96c7a57844 100644
+--- a/drivers/media/pci/saa7146/hexium_orion.c
++++ b/drivers/media/pci/saa7146/hexium_orion.c
+@@ -366,10 +366,16 @@ static struct saa7146_ext_vv vv_data;
+ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
+ {
+ 	struct hexium *hexium = (struct hexium *) dev->ext_priv;
++	int ret;
+ 
+ 	DEB_EE("\n");
+ 
+-	saa7146_vv_init(dev, &vv_data);
++	ret = saa7146_vv_init(dev, &vv_data);
++	if (ret) {
++		pr_err("Error in saa7146_vv_init()\n");
++		return ret;
++	}
++
+ 	vv_data.vid_ops.vidioc_enum_input = vidioc_enum_input;
+ 	vv_data.vid_ops.vidioc_g_input = vidioc_g_input;
+ 	vv_data.vid_ops.vidioc_s_input = vidioc_s_input;
+diff --git a/drivers/media/pci/saa7146/mxb.c b/drivers/media/pci/saa7146/mxb.c
+index 3e8753c9e1e47..849c2a1d09f99 100644
+--- a/drivers/media/pci/saa7146/mxb.c
++++ b/drivers/media/pci/saa7146/mxb.c
+@@ -694,10 +694,16 @@ static struct saa7146_ext_vv vv_data;
+ static int mxb_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
+ {
+ 	struct mxb *mxb;
++	int ret;
+ 
+ 	DEB_EE("dev:%p\n", dev);
+ 
+-	saa7146_vv_init(dev, &vv_data);
++	ret = saa7146_vv_init(dev, &vv_data);
++	if (ret) {
++		ERR("Error in saa7146_vv_init()");
++		return ret;
++	}
++
+ 	if (mxb_probe(dev)) {
+ 		saa7146_vv_release(dev);
+ 		return -1;
+diff --git a/drivers/media/rc/igorplugusb.c b/drivers/media/rc/igorplugusb.c
+index 5cf983be07a20..0f4c4c39bf6da 100644
+--- a/drivers/media/rc/igorplugusb.c
++++ b/drivers/media/rc/igorplugusb.c
+@@ -73,9 +73,11 @@ static void igorplugusb_irdata(struct igorplugusb *ir, unsigned len)
+ 	if (start >= len) {
+ 		dev_err(ir->dev, "receive overflow invalid: %u", overflow);
+ 	} else {
+-		if (overflow > 0)
++		if (overflow > 0) {
+ 			dev_warn(ir->dev, "receive overflow, at least %u lost",
+ 								overflow);
++			ir_raw_event_reset(ir->rc);
++		}
+ 
+ 		do {
+ 			rawir.duration = ir->buf_in[i] * 85333;
+diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
+index b78d70685b1c3..49122f442b872 100644
+--- a/drivers/media/rc/mceusb.c
++++ b/drivers/media/rc/mceusb.c
+@@ -1129,7 +1129,7 @@ static void mceusb_gen1_init(struct mceusb_dev *ir)
+ 	 */
+ 	ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
+ 			      USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
+-			      data, USB_CTRL_MSG_SZ, HZ * 3);
++			      data, USB_CTRL_MSG_SZ, 3000);
+ 	dev_dbg(dev, "set address - ret = %d", ret);
+ 	dev_dbg(dev, "set address - data[0] = %d, data[1] = %d",
+ 						data[0], data[1]);
+@@ -1137,20 +1137,20 @@ static void mceusb_gen1_init(struct mceusb_dev *ir)
+ 	/* set feature: bit rate 38400 bps */
+ 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ 			      USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
+-			      0xc04e, 0x0000, NULL, 0, HZ * 3);
++			      0xc04e, 0x0000, NULL, 0, 3000);
+ 
+ 	dev_dbg(dev, "set feature - ret = %d", ret);
+ 
+ 	/* bRequest 4: set char length to 8 bits */
+ 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ 			      4, USB_TYPE_VENDOR,
+-			      0x0808, 0x0000, NULL, 0, HZ * 3);
++			      0x0808, 0x0000, NULL, 0, 3000);
+ 	dev_dbg(dev, "set char length - retB = %d", ret);
+ 
+ 	/* bRequest 2: set handshaking to use DTR/DSR */
+ 	ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
+ 			      2, USB_TYPE_VENDOR,
+-			      0x0000, 0x0100, NULL, 0, HZ * 3);
++			      0x0000, 0x0100, NULL, 0, 3000);
+ 	dev_dbg(dev, "set handshake  - retC = %d", ret);
+ 
+ 	/* device resume */
+diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
+index 05ba47bc0b613..5f3c1c204f643 100644
+--- a/drivers/media/rc/redrat3.c
++++ b/drivers/media/rc/redrat3.c
+@@ -427,7 +427,7 @@ static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3)
+ 	udev = rr3->udev;
+ 	res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd,
+ 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+-			      0x0000, 0x0000, data, sizeof(u8), HZ * 10);
++			      0x0000, 0x0000, data, sizeof(u8), 10000);
+ 
+ 	if (res < 0) {
+ 		dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d",
+@@ -493,7 +493,7 @@ static u32 redrat3_get_timeout(struct redrat3_dev *rr3)
+ 	pipe = usb_rcvctrlpipe(rr3->udev, 0);
+ 	ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM,
+ 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+-			      RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5);
++			      RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, 5000);
+ 	if (ret != len)
+ 		dev_warn(rr3->dev, "Failed to read timeout from hardware\n");
+ 	else {
+@@ -523,7 +523,7 @@ static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns)
+ 	ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
+ 		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+ 		     RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout),
+-		     HZ * 25);
++		     25000);
+ 	dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n",
+ 						be32_to_cpu(*timeout), ret);
+ 
+@@ -557,32 +557,32 @@ static void redrat3_reset(struct redrat3_dev *rr3)
+ 	*val = 0x01;
+ 	rc = usb_control_msg(udev, rxpipe, RR3_RESET,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+-			     RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25);
++			     RR3_CPUCS_REG_ADDR, 0, val, len, 25000);
+ 	dev_dbg(dev, "reset returned 0x%02x\n", rc);
+ 
+ 	*val = length_fuzz;
+ 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+-			     RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25);
++			     RR3_IR_IO_LENGTH_FUZZ, 0, val, len, 25000);
+ 	dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc);
+ 
+ 	*val = (65536 - (minimum_pause * 2000)) / 256;
+ 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+-			     RR3_IR_IO_MIN_PAUSE, 0, val, len, HZ * 25);
++			     RR3_IR_IO_MIN_PAUSE, 0, val, len, 25000);
+ 	dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *val, rc);
+ 
+ 	*val = periods_measure_carrier;
+ 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+-			     RR3_IR_IO_PERIODS_MF, 0, val, len, HZ * 25);
++			     RR3_IR_IO_PERIODS_MF, 0, val, len, 25000);
+ 	dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x", *val,
+ 									rc);
+ 
+ 	*val = RR3_DRIVER_MAXLENS;
+ 	rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+-			     RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25);
++			     RR3_IR_IO_MAX_LENGTHS, 0, val, len, 25000);
+ 	dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc);
+ 
+ 	kfree(val);
+@@ -602,7 +602,7 @@ static void redrat3_get_firmware_rev(struct redrat3_dev *rr3)
+ 	rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0),
+ 			     RR3_FW_VERSION,
+ 			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+-			     0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5);
++			     0, 0, buffer, RR3_FW_VERSION_LEN, 5000);
+ 
+ 	if (rc >= 0)
+ 		dev_info(rr3->dev, "Firmware rev: %s", buffer);
+@@ -842,14 +842,14 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
+ 
+ 	pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
+ 	ret = usb_bulk_msg(rr3->udev, pipe, irdata,
+-			    sendbuf_len, &ret_len, 10 * HZ);
++			    sendbuf_len, &ret_len, 10000);
+ 	dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret);
+ 
+ 	/* now tell the hardware to transmit what we sent it */
+ 	pipe = usb_rcvctrlpipe(rr3->udev, 0);
+ 	ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
+ 			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+-			      0, 0, irdata, 2, HZ * 10);
++			      0, 0, irdata, 2, 10000);
+ 
+ 	if (ret < 0)
+ 		dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
+diff --git a/drivers/media/tuners/msi001.c b/drivers/media/tuners/msi001.c
+index 3a12ef35682b5..64d98517f470f 100644
+--- a/drivers/media/tuners/msi001.c
++++ b/drivers/media/tuners/msi001.c
+@@ -464,6 +464,13 @@ static int msi001_probe(struct spi_device *spi)
+ 			V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1);
+ 	dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
+ 			V4L2_CID_RF_TUNER_BANDWIDTH, 200000, 8000000, 1, 200000);
++	if (dev->hdl.error) {
++		ret = dev->hdl.error;
++		dev_err(&spi->dev, "Could not initialize controls\n");
++		/* control init failed, free handler */
++		goto err_ctrl_handler_free;
++	}
++
+ 	v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
+ 	dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &msi001_ctrl_ops,
+ 			V4L2_CID_RF_TUNER_LNA_GAIN, 0, 1, 1, 1);
+diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
+index 72a47da0db2ae..e56837414e2c7 100644
+--- a/drivers/media/tuners/si2157.c
++++ b/drivers/media/tuners/si2157.c
+@@ -89,7 +89,7 @@ static int si2157_init(struct dvb_frontend *fe)
+ 	dev_dbg(&client->dev, "\n");
+ 
+ 	/* Try to get Xtal trim property, to verify tuner still running */
+-	memcpy(cmd.args, "\x15\x00\x04\x02", 4);
++	memcpy(cmd.args, "\x15\x00\x02\x04", 4);
+ 	cmd.wlen = 4;
+ 	cmd.rlen = 4;
+ 	ret = si2157_cmd_execute(client, &cmd);
+diff --git a/drivers/media/usb/b2c2/flexcop-usb.c b/drivers/media/usb/b2c2/flexcop-usb.c
+index a93fc1839e139..3d6e991df9261 100644
+--- a/drivers/media/usb/b2c2/flexcop-usb.c
++++ b/drivers/media/usb/b2c2/flexcop-usb.c
+@@ -87,7 +87,7 @@ static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI,
+ 			0,
+ 			fc_usb->data,
+ 			sizeof(u32),
+-			B2C2_WAIT_FOR_OPERATION_RDW * HZ);
++			B2C2_WAIT_FOR_OPERATION_RDW);
+ 
+ 	if (ret != sizeof(u32)) {
+ 		err("error while %s dword from %d (%d).", read ? "reading" :
+@@ -155,7 +155,7 @@ static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
+ 			wIndex,
+ 			fc_usb->data,
+ 			buflen,
+-			nWaitTime * HZ);
++			nWaitTime);
+ 	if (ret != buflen)
+ 		ret = -EIO;
+ 
+@@ -249,13 +249,13 @@ static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
+ 		/* DKT 020208 - add this to support special case of DiSEqC */
+ 	case USB_FUNC_I2C_CHECKWRITE:
+ 		pipe = B2C2_USB_CTRL_PIPE_OUT;
+-		nWaitTime = 2;
++		nWaitTime = 2000;
+ 		request_type |= USB_DIR_OUT;
+ 		break;
+ 	case USB_FUNC_I2C_READ:
+ 	case USB_FUNC_I2C_REPEATREAD:
+ 		pipe = B2C2_USB_CTRL_PIPE_IN;
+-		nWaitTime = 2;
++		nWaitTime = 2000;
+ 		request_type |= USB_DIR_IN;
+ 		break;
+ 	default:
+@@ -282,7 +282,7 @@ static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
+ 			wIndex,
+ 			fc_usb->data,
+ 			buflen,
+-			nWaitTime * HZ);
++			nWaitTime);
+ 
+ 	if (ret != buflen)
+ 		ret = -EIO;
+diff --git a/drivers/media/usb/b2c2/flexcop-usb.h b/drivers/media/usb/b2c2/flexcop-usb.h
+index 25ad43166e78c..247c7dbc8a619 100644
+--- a/drivers/media/usb/b2c2/flexcop-usb.h
++++ b/drivers/media/usb/b2c2/flexcop-usb.h
+@@ -90,13 +90,13 @@ typedef enum {
+ 	UTILITY_SRAM_TESTVERIFY     = 0x16,
+ } flexcop_usb_utility_function_t;
+ 
+-#define B2C2_WAIT_FOR_OPERATION_RW (1*HZ)
+-#define B2C2_WAIT_FOR_OPERATION_RDW (3*HZ)
+-#define B2C2_WAIT_FOR_OPERATION_WDW (1*HZ)
++#define B2C2_WAIT_FOR_OPERATION_RW 1000
++#define B2C2_WAIT_FOR_OPERATION_RDW 3000
++#define B2C2_WAIT_FOR_OPERATION_WDW 1000
+ 
+-#define B2C2_WAIT_FOR_OPERATION_V8READ (3*HZ)
+-#define B2C2_WAIT_FOR_OPERATION_V8WRITE (3*HZ)
+-#define B2C2_WAIT_FOR_OPERATION_V8FLASH (3*HZ)
++#define B2C2_WAIT_FOR_OPERATION_V8READ 3000
++#define B2C2_WAIT_FOR_OPERATION_V8WRITE 3000
++#define B2C2_WAIT_FOR_OPERATION_V8FLASH 3000
+ 
+ typedef enum {
+ 	V8_MEMORY_PAGE_DVB_CI = 0x20,
+diff --git a/drivers/media/usb/cpia2/cpia2_usb.c b/drivers/media/usb/cpia2/cpia2_usb.c
+index 4f4a130f17af3..447d6a52af3b8 100644
+--- a/drivers/media/usb/cpia2/cpia2_usb.c
++++ b/drivers/media/usb/cpia2/cpia2_usb.c
+@@ -565,7 +565,7 @@ static int write_packet(struct usb_device *udev,
+ 			       0,	/* index */
+ 			       buf,	/* buffer */
+ 			       size,
+-			       HZ);
++			       1000);
+ 
+ 	kfree(buf);
+ 	return ret;
+@@ -597,7 +597,7 @@ static int read_packet(struct usb_device *udev,
+ 			       0,	/* index */
+ 			       buf,	/* buffer */
+ 			       size,
+-			       HZ);
++			       1000);
+ 
+ 	if (ret >= 0)
+ 		memcpy(registers, buf, size);
+diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
+index 4a5ea74c91d45..1b56824fbe51e 100644
+--- a/drivers/media/usb/dvb-usb/dib0700_core.c
++++ b/drivers/media/usb/dvb-usb/dib0700_core.c
+@@ -610,8 +610,6 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
+ 		deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
+ 		if (onoff)
+ 			st->channel_state |=	1 << (adap->id);
+-		else
+-			st->channel_state |=	1 << ~(adap->id);
+ 	} else {
+ 		if (onoff)
+ 			st->channel_state |=	1 << (adap->fe_adap[0].stream.props.endpoint-2);
+diff --git a/drivers/media/usb/dvb-usb/m920x.c b/drivers/media/usb/dvb-usb/m920x.c
+index eafc5c82467f4..5b806779e2106 100644
+--- a/drivers/media/usb/dvb-usb/m920x.c
++++ b/drivers/media/usb/dvb-usb/m920x.c
+@@ -284,6 +284,13 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
+ 			/* Should check for ack here, if we knew how. */
+ 		}
+ 		if (msg[i].flags & I2C_M_RD) {
++			char *read = kmalloc(1, GFP_KERNEL);
++			if (!read) {
++				ret = -ENOMEM;
++				kfree(read);
++				goto unlock;
++			}
++
+ 			for (j = 0; j < msg[i].len; j++) {
+ 				/* Last byte of transaction?
+ 				 * Send STOP, otherwise send ACK. */
+@@ -291,9 +298,12 @@ static int m920x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], int nu
+ 
+ 				if ((ret = m920x_read(d->udev, M9206_I2C, 0x0,
+ 						      0x20 | stop,
+-						      &msg[i].buf[j], 1)) != 0)
++						      read, 1)) != 0)
+ 					goto unlock;
++				msg[i].buf[j] = read[0];
+ 			}
++
++			kfree(read);
+ 		} else {
+ 			for (j = 0; j < msg[i].len; j++) {
+ 				/* Last byte of transaction? Then send STOP. */
+diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c
+index eebd5d7088d00..fb3008a7233fe 100644
+--- a/drivers/media/usb/em28xx/em28xx-core.c
++++ b/drivers/media/usb/em28xx/em28xx-core.c
+@@ -99,7 +99,7 @@ int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
+ 	mutex_lock(&dev->ctrl_urb_lock);
+ 	ret = usb_control_msg(dev->udev, pipe, req,
+ 			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+-			      0x0000, reg, dev->urb_buf, len, HZ);
++			      0x0000, reg, dev->urb_buf, len, 1000);
+ 	if (ret < 0) {
+ 		if (reg_debug)
+ 			printk(" failed!\n");
+@@ -182,7 +182,7 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
+ 	memcpy(dev->urb_buf, buf, len);
+ 	ret = usb_control_msg(dev->udev, pipe, req,
+ 			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+-			      0x0000, reg, dev->urb_buf, len, HZ);
++			      0x0000, reg, dev->urb_buf, len, 1000);
+ 	mutex_unlock(&dev->ctrl_urb_lock);
+ 
+ 	if (ret < 0)
+diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
+index 0cb8dd5852357..40535db585a0e 100644
+--- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
++++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c
+@@ -1488,7 +1488,7 @@ static int pvr2_upload_firmware1(struct pvr2_hdw *hdw)
+ 	for (address = 0; address < fwsize; address += 0x800) {
+ 		memcpy(fw_ptr, fw_entry->data + address, 0x800);
+ 		ret += usb_control_msg(hdw->usb_dev, pipe, 0xa0, 0x40, address,
+-				       0, fw_ptr, 0x800, HZ);
++				       0, fw_ptr, 0x800, 1000);
+ 	}
+ 
+ 	trace_firmware("Upload done, releasing device's CPU");
+@@ -1627,7 +1627,7 @@ int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
+ 			((u32 *)fw_ptr)[icnt] = swab32(((u32 *)fw_ptr)[icnt]);
+ 
+ 		ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,bcnt,
+-				    &actual_length, HZ);
++				    &actual_length, 1000);
+ 		ret |= (actual_length != bcnt);
+ 		if (ret) break;
+ 		fw_done += bcnt;
+@@ -3486,7 +3486,7 @@ void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *hdw,
+ 						      0xa0,0xc0,
+ 						      address,0,
+ 						      hdw->fw_buffer+address,
+-						      0x800,HZ);
++						      0x800,1000);
+ 				if (ret < 0) break;
+ 			}
+ 
+@@ -4011,7 +4011,7 @@ void pvr2_hdw_cpureset_assert(struct pvr2_hdw *hdw,int val)
+ 	/* Write the CPUCS register on the 8051.  The lsb of the register
+ 	   is the reset bit; a 1 asserts reset while a 0 clears it. */
+ 	pipe = usb_sndctrlpipe(hdw->usb_dev, 0);
+-	ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,HZ);
++	ret = usb_control_msg(hdw->usb_dev,pipe,0xa0,0x40,0xe600,0,da,1,1000);
+ 	if (ret < 0) {
+ 		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
+ 			   "cpureset_assert(%d) error=%d",val,ret);
+diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c
+index f7bb78c1873c9..fb5636f07e7eb 100644
+--- a/drivers/media/usb/s2255/s2255drv.c
++++ b/drivers/media/usb/s2255/s2255drv.c
+@@ -1913,7 +1913,7 @@ static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
+ 				    USB_TYPE_VENDOR | USB_RECIP_DEVICE |
+ 				    USB_DIR_IN,
+ 				    Value, Index, buf,
+-				    TransferBufferLength, HZ * 5);
++				    TransferBufferLength, USB_CTRL_SET_TIMEOUT);
+ 
+ 		if (r >= 0)
+ 			memcpy(TransferBuffer, buf, TransferBufferLength);
+@@ -1922,7 +1922,7 @@ static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
+ 		r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
+ 				    Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 				    Value, Index, buf,
+-				    TransferBufferLength, HZ * 5);
++				    TransferBufferLength, USB_CTRL_SET_TIMEOUT);
+ 	}
+ 	kfree(buf);
+ 	return r;
+diff --git a/drivers/media/usb/stk1160/stk1160-core.c b/drivers/media/usb/stk1160/stk1160-core.c
+index bc029478065a0..a526ea2fe587a 100644
+--- a/drivers/media/usb/stk1160/stk1160-core.c
++++ b/drivers/media/usb/stk1160/stk1160-core.c
+@@ -76,7 +76,7 @@ int stk1160_read_reg(struct stk1160 *dev, u16 reg, u8 *value)
+ 		return -ENOMEM;
+ 	ret = usb_control_msg(dev->udev, pipe, 0x00,
+ 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+-			0x00, reg, buf, sizeof(u8), HZ);
++			0x00, reg, buf, sizeof(u8), 1000);
+ 	if (ret < 0) {
+ 		stk1160_err("read failed on reg 0x%x (%d)\n",
+ 			reg, ret);
+@@ -96,7 +96,7 @@ int stk1160_write_reg(struct stk1160 *dev, u16 reg, u16 value)
+ 
+ 	ret =  usb_control_msg(dev->udev, pipe, 0x01,
+ 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+-			value, reg, NULL, 0, HZ);
++			value, reg, NULL, 0, 1000);
+ 	if (ret < 0) {
+ 		stk1160_err("write failed on reg 0x%x (%d)\n",
+ 			reg, ret);
+diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
+index 1d724e86f3780..2a7d178a9d069 100644
+--- a/drivers/media/usb/uvc/uvc_video.c
++++ b/drivers/media/usb/uvc/uvc_video.c
+@@ -1716,6 +1716,10 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags)
+ 		if (ep == NULL)
+ 			return -EIO;
+ 
++		/* Reject broken descriptors. */
++		if (usb_endpoint_maxp(&ep->desc) == 0)
++			return -EIO;
++
+ 		ret = uvc_init_video_bulk(stream, ep, gfp_flags);
+ 	}
+ 
+diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
+index 6bf8d643d9428..31fbfd9c4b11c 100644
+--- a/drivers/mfd/intel-lpss-acpi.c
++++ b/drivers/mfd/intel-lpss-acpi.c
+@@ -84,6 +84,7 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev)
+ {
+ 	struct intel_lpss_platform_info *info;
+ 	const struct acpi_device_id *id;
++	int ret;
+ 
+ 	id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
+ 	if (!id)
+@@ -97,10 +98,14 @@ static int intel_lpss_acpi_probe(struct platform_device *pdev)
+ 	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	info->irq = platform_get_irq(pdev, 0);
+ 
++	ret = intel_lpss_probe(&pdev->dev, info);
++	if (ret)
++		return ret;
++
+ 	pm_runtime_set_active(&pdev->dev);
+ 	pm_runtime_enable(&pdev->dev);
+ 
+-	return intel_lpss_probe(&pdev->dev, info);
++	return 0;
+ }
+ 
+ static int intel_lpss_acpi_remove(struct platform_device *pdev)
+diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c
+index 626fdcaf25101..645d26536114f 100644
+--- a/drivers/misc/lattice-ecp3-config.c
++++ b/drivers/misc/lattice-ecp3-config.c
+@@ -81,12 +81,12 @@ static void firmware_load(const struct firmware *fw, void *context)
+ 
+ 	if (fw == NULL) {
+ 		dev_err(&spi->dev, "Cannot load firmware, aborting\n");
+-		return;
++		goto out;
+ 	}
+ 
+ 	if (fw->size == 0) {
+ 		dev_err(&spi->dev, "Error: Firmware size is 0!\n");
+-		return;
++		goto out;
+ 	}
+ 
+ 	/* Fill dummy data (24 stuffing bits for commands) */
+@@ -108,7 +108,7 @@ static void firmware_load(const struct firmware *fw, void *context)
+ 		dev_err(&spi->dev,
+ 			"Error: No supported FPGA detected (JEDEC_ID=%08x)!\n",
+ 			jedec_id);
+-		return;
++		goto out;
+ 	}
+ 
+ 	dev_info(&spi->dev, "FPGA %s detected\n", ecp3_dev[i].name);
+@@ -121,7 +121,7 @@ static void firmware_load(const struct firmware *fw, void *context)
+ 	buffer = kzalloc(fw->size + 8, GFP_KERNEL);
+ 	if (!buffer) {
+ 		dev_err(&spi->dev, "Error: Can't allocate memory!\n");
+-		return;
++		goto out;
+ 	}
+ 
+ 	/*
+@@ -160,7 +160,7 @@ static void firmware_load(const struct firmware *fw, void *context)
+ 			"Error: Timeout waiting for FPGA to clear (status=%08x)!\n",
+ 			status);
+ 		kfree(buffer);
+-		return;
++		goto out;
+ 	}
+ 
+ 	dev_info(&spi->dev, "Configuring the FPGA...\n");
+@@ -186,7 +186,7 @@ static void firmware_load(const struct firmware *fw, void *context)
+ 	release_firmware(fw);
+ 
+ 	kfree(buffer);
+-
++out:
+ 	complete(&data->fw_loaded);
+ }
+ 
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index 2b721ed392adb..0d9226bdf6614 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -782,14 +782,14 @@ static bool bond_should_notify_peers(struct bonding *bond)
+ 	slave = rcu_dereference(bond->curr_active_slave);
+ 	rcu_read_unlock();
+ 
+-	netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n",
+-		   slave ? slave->dev->name : "NULL");
+-
+ 	if (!slave || !bond->send_peer_notif ||
+ 	    !netif_carrier_ok(bond->dev) ||
+ 	    test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
+ 		return false;
+ 
++	netdev_dbg(bond->dev, "bond_should_notify_peers: slave %s\n",
++		   slave ? slave->dev->name : "NULL");
++
+ 	return true;
+ }
+ 
+diff --git a/drivers/net/can/softing/softing_cs.c b/drivers/net/can/softing/softing_cs.c
+index cdc0c7433a4b5..9fbed88d6c821 100644
+--- a/drivers/net/can/softing/softing_cs.c
++++ b/drivers/net/can/softing/softing_cs.c
+@@ -304,7 +304,7 @@ static int softingcs_probe(struct pcmcia_device *pcmcia)
+ 	return 0;
+ 
+ platform_failed:
+-	kfree(dev);
++	platform_device_put(pdev);
+ mem_failed:
+ pcmcia_bad:
+ pcmcia_failed:
+diff --git a/drivers/net/can/softing/softing_fw.c b/drivers/net/can/softing/softing_fw.c
+index 52fe50725d749..a74c779feb90e 100644
+--- a/drivers/net/can/softing/softing_fw.c
++++ b/drivers/net/can/softing/softing_fw.c
+@@ -576,18 +576,19 @@ int softing_startstop(struct net_device *dev, int up)
+ 		if (ret < 0)
+ 			goto failed;
+ 	}
+-	/* enable_error_frame */
+-	/*
++
++	/* enable_error_frame
++	 *
+ 	 * Error reporting is switched off at the moment since
+ 	 * the receiving of them is not yet 100% verified
+ 	 * This should be enabled sooner or later
+-	 *
+-	if (error_reporting) {
++	 */
++	if (0 && error_reporting) {
+ 		ret = softing_fct_cmd(card, 51, "enable_error_frame");
+ 		if (ret < 0)
+ 			goto failed;
+ 	}
+-	*/
++
+ 	/* initialize interface */
+ 	iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 2]);
+ 	iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 4]);
+diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
+index d21c68882e867..75399aa1ba951 100644
+--- a/drivers/net/can/usb/gs_usb.c
++++ b/drivers/net/can/usb/gs_usb.c
+@@ -328,7 +328,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
+ 
+ 	/* device reports out of range channel id */
+ 	if (hf->channel >= GS_MAX_INTF)
+-		goto resubmit_urb;
++		goto device_detach;
+ 
+ 	dev = usbcan->canch[hf->channel];
+ 
+@@ -413,6 +413,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
+ 
+ 	/* USB failure take down all interfaces */
+ 	if (rc == -ENODEV) {
++ device_detach:
+ 		for (rc = 0; rc < GS_MAX_INTF; rc++) {
+ 			if (usbcan->canch[rc])
+ 				netif_device_detach(usbcan->canch[rc]->netdev);
+@@ -514,6 +515,8 @@ static netdev_tx_t gs_can_start_xmit(struct sk_buff *skb,
+ 
+ 	hf->echo_id = idx;
+ 	hf->channel = dev->channel;
++	hf->flags = 0;
++	hf->reserved = 0;
+ 
+ 	cf = (struct can_frame *)skb->data;
+ 
+diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
+index e680bab27dd7e..ef24b619e0e57 100644
+--- a/drivers/net/can/xilinx_can.c
++++ b/drivers/net/can/xilinx_can.c
+@@ -1302,7 +1302,12 @@ static int xcan_probe(struct platform_device *pdev)
+ 	spin_lock_init(&priv->tx_lock);
+ 
+ 	/* Get IRQ for the device */
+-	ndev->irq = platform_get_irq(pdev, 0);
++	ret = platform_get_irq(pdev, 0);
++	if (ret < 0)
++		goto err_free;
++
++	ndev->irq = ret;
++
+ 	ndev->flags |= IFF_ECHO;	/* We support local echo */
+ 
+ 	platform_set_drvdata(pdev, ndev);
+diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+index fae5517770834..6676924d5f3e7 100644
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -3358,10 +3358,12 @@ static int bcmgenet_probe(struct platform_device *pdev)
+ 
+ 	/* Request the WOL interrupt and advertise suspend if available */
+ 	priv->wol_irq_disabled = true;
+-	err = devm_request_irq(&pdev->dev, priv->wol_irq, bcmgenet_wol_isr, 0,
+-			       dev->name, priv);
+-	if (!err)
+-		device_set_wakeup_capable(&pdev->dev, 1);
++	if (priv->wol_irq > 0) {
++		err = devm_request_irq(&pdev->dev, priv->wol_irq,
++				       bcmgenet_wol_isr, 0, dev->name, priv);
++		if (!err)
++			device_set_wakeup_capable(&pdev->dev, 1);
++	}
+ 
+ 	/* Set the needed headroom to account for any possible
+ 	 * features enabling/disabling at runtime
+diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
+index d04a6c1634452..da8d10475a08e 100644
+--- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
++++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c
+@@ -32,6 +32,7 @@
+ 
+ #include <linux/tcp.h>
+ #include <linux/ipv6.h>
++#include <net/inet_ecn.h>
+ #include <net/route.h>
+ #include <net/ip6_route.h>
+ 
+@@ -99,7 +100,7 @@ cxgb_find_route(struct cxgb4_lld_info *lldi,
+ 
+ 	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
+ 				   peer_port, local_port, IPPROTO_TCP,
+-				   tos, 0);
++				   tos & ~INET_ECN_MASK, 0);
+ 	if (IS_ERR(rt))
+ 		return NULL;
+ 	n = dst_neigh_lookup(&rt->dst, &peer_ip);
+diff --git a/drivers/net/ethernet/freescale/fman/mac.c b/drivers/net/ethernet/freescale/fman/mac.c
+index 81021f87e4f39..93b7ed361b82e 100644
+--- a/drivers/net/ethernet/freescale/fman/mac.c
++++ b/drivers/net/ethernet/freescale/fman/mac.c
+@@ -96,14 +96,17 @@ static void mac_exception(void *handle, enum fman_mac_exceptions ex)
+ 		__func__, ex);
+ }
+ 
+-static void set_fman_mac_params(struct mac_device *mac_dev,
+-				struct fman_mac_params *params)
++static int set_fman_mac_params(struct mac_device *mac_dev,
++			       struct fman_mac_params *params)
+ {
+ 	struct mac_priv_s *priv = mac_dev->priv;
+ 
+ 	params->base_addr = (typeof(params->base_addr))
+ 		devm_ioremap(priv->dev, mac_dev->res->start,
+ 			     resource_size(mac_dev->res));
++	if (!params->base_addr)
++		return -ENOMEM;
++
+ 	memcpy(&params->addr, mac_dev->addr, sizeof(mac_dev->addr));
+ 	params->max_speed	= priv->max_speed;
+ 	params->phy_if		= priv->phy_if;
+@@ -114,6 +117,8 @@ static void set_fman_mac_params(struct mac_device *mac_dev,
+ 	params->event_cb	= mac_exception;
+ 	params->dev_id		= mac_dev;
+ 	params->internal_phy_node = priv->internal_phy_node;
++
++	return 0;
+ }
+ 
+ static int tgec_initialization(struct mac_device *mac_dev)
+@@ -125,7 +130,9 @@ static int tgec_initialization(struct mac_device *mac_dev)
+ 
+ 	priv = mac_dev->priv;
+ 
+-	set_fman_mac_params(mac_dev, &params);
++	err = set_fman_mac_params(mac_dev, &params);
++	if (err)
++		goto _return;
+ 
+ 	mac_dev->fman_mac = tgec_config(&params);
+ 	if (!mac_dev->fman_mac) {
+@@ -171,7 +178,9 @@ static int dtsec_initialization(struct mac_device *mac_dev)
+ 
+ 	priv = mac_dev->priv;
+ 
+-	set_fman_mac_params(mac_dev, &params);
++	err = set_fman_mac_params(mac_dev, &params);
++	if (err)
++		goto _return;
+ 
+ 	mac_dev->fman_mac = dtsec_config(&params);
+ 	if (!mac_dev->fman_mac) {
+@@ -220,7 +229,9 @@ static int memac_initialization(struct mac_device *mac_dev)
+ 
+ 	priv = mac_dev->priv;
+ 
+-	set_fman_mac_params(mac_dev, &params);
++	err = set_fman_mac_params(mac_dev, &params);
++	if (err)
++		goto _return;
+ 
+ 	if (priv->max_speed == SPEED_10000)
+ 		params.phy_if = PHY_INTERFACE_MODE_XGMII;
+diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
+index 9fd68cfdd9734..fc721a59a4086 100644
+--- a/drivers/net/ethernet/freescale/gianfar.c
++++ b/drivers/net/ethernet/freescale/gianfar.c
+@@ -2939,29 +2939,21 @@ static bool gfar_add_rx_frag(struct gfar_rx_buff *rxb, u32 lstatus,
+ {
+ 	int size = lstatus & BD_LENGTH_MASK;
+ 	struct page *page = rxb->page;
+-	bool last = !!(lstatus & BD_LFLAG(RXBD_LAST));
+-
+-	/* Remove the FCS from the packet length */
+-	if (last)
+-		size -= ETH_FCS_LEN;
+ 
+ 	if (likely(first)) {
+ 		skb_put(skb, size);
+ 	} else {
+ 		/* the last fragments' length contains the full frame length */
+-		if (last)
++		if (lstatus & BD_LFLAG(RXBD_LAST))
+ 			size -= skb->len;
+ 
+-		/* Add the last fragment if it contains something other than
+-		 * the FCS, otherwise drop it and trim off any part of the FCS
+-		 * that was already received.
+-		 */
+-		if (size > 0)
+-			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
+-					rxb->page_offset + RXBUF_ALIGNMENT,
+-					size, GFAR_RXB_TRUESIZE);
+-		else if (size < 0)
+-			pskb_trim(skb, skb->len + size);
++		WARN(size < 0, "gianfar: rx fragment size underflow");
++		if (size < 0)
++			return false;
++
++		skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
++				rxb->page_offset + RXBUF_ALIGNMENT,
++				size, GFAR_RXB_TRUESIZE);
+ 	}
+ 
+ 	/* try reuse page */
+@@ -3074,6 +3066,9 @@ static void gfar_process_frame(struct net_device *ndev, struct sk_buff *skb)
+ 	if (priv->padding)
+ 		skb_pull(skb, priv->padding);
+ 
++	/* Trim off the FCS */
++	pskb_trim(skb, skb->len - ETH_FCS_LEN);
++
+ 	if (ndev->features & NETIF_F_RXCSUM)
+ 		gfar_rx_checksum(skb, fcb);
+ 
+@@ -3117,6 +3112,17 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit)
+ 		if (lstatus & BD_LFLAG(RXBD_EMPTY))
+ 			break;
+ 
++		/* lost RXBD_LAST descriptor due to overrun */
++		if (skb &&
++		    (lstatus & BD_LFLAG(RXBD_FIRST))) {
++			/* discard faulty buffer */
++			dev_kfree_skb(skb);
++			skb = NULL;
++			rx_queue->stats.rx_dropped++;
++
++			/* can continue normally */
++		}
++
+ 		/* order rx buffer descriptor reads */
+ 		rmb();
+ 
+diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c
+index c82c85ef5fb34..c37aea7ba8502 100644
+--- a/drivers/net/ethernet/freescale/xgmac_mdio.c
++++ b/drivers/net/ethernet/freescale/xgmac_mdio.c
+@@ -301,9 +301,10 @@ err_ioremap:
+ static int xgmac_mdio_remove(struct platform_device *pdev)
+ {
+ 	struct mii_bus *bus = platform_get_drvdata(pdev);
++	struct mdio_fsl_priv *priv = bus->priv;
+ 
+ 	mdiobus_unregister(bus);
+-	iounmap(bus->priv);
++	iounmap(priv->mdio_base);
+ 	mdiobus_free(bus);
+ 
+ 	return 0;
+diff --git a/drivers/net/ethernet/i825xx/sni_82596.c b/drivers/net/ethernet/i825xx/sni_82596.c
+index 2af7f77345fbd..e4128e151b854 100644
+--- a/drivers/net/ethernet/i825xx/sni_82596.c
++++ b/drivers/net/ethernet/i825xx/sni_82596.c
+@@ -122,9 +122,10 @@ static int sni_82596_probe(struct platform_device *dev)
+ 	netdevice->dev_addr[5] = readb(eth_addr + 0x06);
+ 	iounmap(eth_addr);
+ 
+-	if (!netdevice->irq) {
++	if (netdevice->irq < 0) {
+ 		printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
+ 			__FILE__, netdevice->base_addr);
++		retval = netdevice->irq;
+ 		goto probe_failed;
+ 	}
+ 
+diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+index 46fcf3ec2caf7..46998a58e3d96 100644
+--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
++++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+@@ -278,6 +278,16 @@ static int axienet_dma_bd_init(struct net_device *ndev)
+ 	axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET,
+ 			  cr | XAXIDMA_CR_RUNSTOP_MASK);
+ 
++	/* Wait for PhyRstCmplt bit to be set, indicating the PHY reset has finished */
++	ret = read_poll_timeout(axienet_ior, value,
++				value & XAE_INT_PHYRSTCMPLT_MASK,
++				DELAY_OF_ONE_MILLISEC, 50000, false, lp,
++				XAE_IS_OFFSET);
++	if (ret) {
++		dev_err(lp->dev, "%s: timeout waiting for PhyRstCmplt\n", __func__);
++		return ret;
++	}
++
+ 	return 0;
+ out:
+ 	axienet_dma_bd_release(ndev);
+@@ -670,7 +680,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+ 	num_frag = skb_shinfo(skb)->nr_frags;
+ 	cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
+ 
+-	if (axienet_check_tx_bd_space(lp, num_frag)) {
++	if (axienet_check_tx_bd_space(lp, num_frag + 1)) {
+ 		if (netif_queue_stopped(ndev))
+ 			return NETDEV_TX_BUSY;
+ 
+@@ -680,7 +690,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+ 		smp_mb();
+ 
+ 		/* Space might have just been freed - check again */
+-		if (axienet_check_tx_bd_space(lp, num_frag))
++		if (axienet_check_tx_bd_space(lp, num_frag + 1))
+ 			return NETDEV_TX_BUSY;
+ 
+ 		netif_wake_queue(ndev);
+diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
+index 92fb664b56fbb..0fa6e2da4b5a2 100644
+--- a/drivers/net/phy/mdio_bus.c
++++ b/drivers/net/phy/mdio_bus.c
+@@ -347,7 +347,7 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
+ 	}
+ 
+ 	bus->state = MDIOBUS_REGISTERED;
+-	pr_info("%s: probed\n", bus->name);
++	dev_dbg(&bus->dev, "probed\n");
+ 	return 0;
+ 
+ error:
+diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
+index 0a29844676f92..6287d2ad77c6d 100644
+--- a/drivers/net/ppp/ppp_generic.c
++++ b/drivers/net/ppp/ppp_generic.c
+@@ -71,6 +71,8 @@
+ #define MPHDRLEN	6	/* multilink protocol header length */
+ #define MPHDRLEN_SSN	4	/* ditto with short sequence numbers */
+ 
++#define PPP_PROTO_LEN	2
++
+ /*
+  * An instance of /dev/ppp can be associated with either a ppp
+  * interface unit or a ppp channel.  In both cases, file->private_data
+@@ -500,6 +502,9 @@ static ssize_t ppp_write(struct file *file, const char __user *buf,
+ 
+ 	if (!pf)
+ 		return -ENXIO;
++	/* All PPP packets should start with the 2-byte protocol */
++	if (count < PPP_PROTO_LEN)
++		return -EINVAL;
+ 	ret = -ENOMEM;
+ 	skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL);
+ 	if (!skb)
+@@ -1563,7 +1568,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
+ 	}
+ 
+ 	++ppp->stats64.tx_packets;
+-	ppp->stats64.tx_bytes += skb->len - 2;
++	ppp->stats64.tx_bytes += skb->len - PPP_PROTO_LEN;
+ 
+ 	switch (proto) {
+ 	case PPP_IP:
+diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c
+index 4f345bd4e6e29..95151b46f2001 100644
+--- a/drivers/net/usb/mcs7830.c
++++ b/drivers/net/usb/mcs7830.c
+@@ -121,8 +121,16 @@ static const char driver_name[] = "MOSCHIP usb-ethernet driver";
+ 
+ static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data)
+ {
+-	return usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
+-				0x0000, index, data, size);
++	int ret;
++
++	ret = usbnet_read_cmd(dev, MCS7830_RD_BREQ, MCS7830_RD_BMREQ,
++			      0x0000, index, data, size);
++	if (ret < 0)
++		return ret;
++	else if (ret < size)
++		return -ENODATA;
++
++	return ret;
+ }
+ 
+ static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, const void *data)
+diff --git a/drivers/net/wireless/ath/ar5523/ar5523.c b/drivers/net/wireless/ath/ar5523/ar5523.c
+index 9f4ee1d125b68..0c6b33c464cd9 100644
+--- a/drivers/net/wireless/ath/ar5523/ar5523.c
++++ b/drivers/net/wireless/ath/ar5523/ar5523.c
+@@ -153,6 +153,10 @@ static void ar5523_cmd_rx_cb(struct urb *urb)
+ 			ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START");
+ 			return;
+ 		}
++		if (!cmd->odata) {
++			ar5523_err(ar, "Unexpected WDCMSG_TARGET_START reply");
++			return;
++		}
+ 		memcpy(cmd->odata, hdr + 1, sizeof(u32));
+ 		cmd->olen = sizeof(u32);
+ 		cmd->res = 0;
+diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
+index ae5b33fe5ba82..374ce35940d07 100644
+--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
++++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
+@@ -158,6 +158,9 @@ void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt)
+ 	htt->num_pending_tx--;
+ 	if (htt->num_pending_tx == htt->max_num_pending_tx - 1)
+ 		ath10k_mac_tx_unlock(htt->ar, ATH10K_TX_PAUSE_Q_FULL);
++
++	if (htt->num_pending_tx == 0)
++		wake_up(&htt->empty_tx_wq);
+ }
+ 
+ int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt)
+diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c
+index beeb6be06939b..b6c050452b757 100644
+--- a/drivers/net/wireless/ath/ath10k/txrx.c
++++ b/drivers/net/wireless/ath/ath10k/txrx.c
+@@ -89,8 +89,6 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
+ 
+ 	ath10k_htt_tx_free_msdu_id(htt, tx_done->msdu_id);
+ 	ath10k_htt_tx_dec_pending(htt);
+-	if (htt->num_pending_tx == 0)
+-		wake_up(&htt->empty_tx_wq);
+ 	spin_unlock_bh(&htt->tx_lock);
+ 
+ 	dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
+diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
+index 7c409cd43b709..33a6be0f21cac 100644
+--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
++++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
+@@ -588,6 +588,13 @@ static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
+ 			return;
+ 		}
+ 
++		if (pkt_len > 2 * MAX_RX_BUF_SIZE) {
++			dev_err(&hif_dev->udev->dev,
++				"ath9k_htc: invalid pkt_len (%x)\n", pkt_len);
++			RX_STAT_INC(skb_dropped);
++			return;
++		}
++
+ 		pad_len = 4 - (pkt_len & 0x3);
+ 		if (pad_len == 4)
+ 			pad_len = 0;
+diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
+index 914c210c9e605..da2f442cab271 100644
+--- a/drivers/net/wireless/ath/wcn36xx/smd.c
++++ b/drivers/net/wireless/ath/wcn36xx/smd.c
+@@ -2052,7 +2052,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
+ 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
+ 				    tmp->bss_index);
+ 			vif = wcn36xx_priv_to_vif(tmp);
+-			ieee80211_connection_loss(vif);
++			ieee80211_beacon_loss(vif);
+ 		}
+ 		return 0;
+ 	}
+@@ -2067,7 +2067,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
+ 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
+ 				    rsp->bss_index);
+ 			vif = wcn36xx_priv_to_vif(tmp);
+-			ieee80211_connection_loss(vif);
++			ieee80211_beacon_loss(vif);
+ 			return 0;
+ 		}
+ 	}
+diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+index d46efa8d70732..f8c225a726bd4 100644
+--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
++++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+@@ -1599,6 +1599,7 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
+ 	struct iwl_mvm_mc_iter_data iter_data = {
+ 		.mvm = mvm,
+ 	};
++	int ret;
+ 
+ 	lockdep_assert_held(&mvm->mutex);
+ 
+@@ -1608,6 +1609,22 @@ static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
+ 	ieee80211_iterate_active_interfaces_atomic(
+ 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
+ 		iwl_mvm_mc_iface_iterator, &iter_data);
++
++	/*
++	 * Send a (synchronous) ech command so that we wait for the
++	 * multiple asynchronous MCAST_FILTER_CMD commands sent by
++	 * the interface iterator. Otherwise, we might get here over
++	 * and over again (by userspace just sending a lot of these)
++	 * and the CPU can send them faster than the firmware can
++	 * process them.
++	 * Note that the CPU is still faster - but with this we'll
++	 * actually send fewer commands overall because the CPU will
++	 * not schedule the work in mac80211 as frequently if it's
++	 * still running when rescheduled (possibly multiple times).
++	 */
++	ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
++	if (ret)
++		IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
+ }
+ 
+ static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
+diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+index fa97432054912..a8470817689cf 100644
+--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
++++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+@@ -1260,7 +1260,7 @@ static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
+ 	return -EIO;
+ }
+ 
+-#define SCAN_TIMEOUT 20000
++#define SCAN_TIMEOUT 30000
+ 
+ void iwl_mvm_scan_timeout_wk(struct work_struct *work)
+ {
+diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c
+index 2c4225e57c396..3a26add665ca0 100644
+--- a/drivers/net/wireless/marvell/mwifiex/usb.c
++++ b/drivers/net/wireless/marvell/mwifiex/usb.c
+@@ -132,7 +132,8 @@ static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
+ 		default:
+ 			mwifiex_dbg(adapter, ERROR,
+ 				    "unknown recv_type %#x\n", recv_type);
+-			return -1;
++			ret = -1;
++			goto exit_restore_skb;
+ 		}
+ 		break;
+ 	case MWIFIEX_USB_EP_DATA:
+diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c
+index 39a6bd314ca3b..264c1d57e10bc 100644
+--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c
++++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/hw.c
+@@ -1037,6 +1037,7 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw)
+ 	_InitPABias(hw);
+ 	rtl92c_dm_init(hw);
+ exit:
++	local_irq_disable();
+ 	local_irq_restore(flags);
+ 	return err;
+ }
+diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c
+index 3651c3871d5b4..1b4aacf2ff9a5 100644
+--- a/drivers/parisc/pdc_stable.c
++++ b/drivers/parisc/pdc_stable.c
+@@ -992,8 +992,10 @@ pdcs_register_pathentries(void)
+ 		entry->kobj.kset = paths_kset;
+ 		err = kobject_init_and_add(&entry->kobj, &ktype_pdcspath, NULL,
+ 					   "%s", entry->name);
+-		if (err)
++		if (err) {
++			kobject_put(&entry->kobj);
+ 			return err;
++		}
+ 
+ 		/* kobject is now registered */
+ 		write_lock(&entry->rw_lock);
+diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
+index 3ff2971102b61..8d34c6d0de796 100644
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -3916,6 +3916,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
+ 			 quirk_dma_func1_alias);
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
+ 			 quirk_dma_func1_alias);
++/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
++			 quirk_dma_func1_alias);
+ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
+ 			 quirk_dma_func1_alias);
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
+diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
+index c3b615c94b4bf..a92cbc952b70b 100644
+--- a/drivers/pcmcia/cs.c
++++ b/drivers/pcmcia/cs.c
+@@ -665,18 +665,16 @@ static int pccardd(void *__skt)
+ 		if (events || sysfs_events)
+ 			continue;
+ 
++		set_current_state(TASK_INTERRUPTIBLE);
+ 		if (kthread_should_stop())
+ 			break;
+ 
+-		set_current_state(TASK_INTERRUPTIBLE);
+-
+ 		schedule();
+ 
+-		/* make sure we are running */
+-		__set_current_state(TASK_RUNNING);
+-
+ 		try_to_freeze();
+ 	}
++	/* make sure we are running before we exit */
++	__set_current_state(TASK_RUNNING);
+ 
+ 	/* shut down socket, if a device is still present */
+ 	if (skt->state & SOCKET_PRESENT) {
+diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
+index 5ef7b46a25786..2e96d9273b780 100644
+--- a/drivers/pcmcia/rsrc_nonstatic.c
++++ b/drivers/pcmcia/rsrc_nonstatic.c
+@@ -693,6 +693,9 @@ static struct resource *__nonstatic_find_io_region(struct pcmcia_socket *s,
+ 	unsigned long min = base;
+ 	int ret;
+ 
++	if (!res)
++		return NULL;
++
+ 	data.mask = align - 1;
+ 	data.offset = base & data.mask;
+ 	data.map = &s_data->io_db;
+@@ -812,6 +815,9 @@ static struct resource *nonstatic_find_mem_region(u_long base, u_long num,
+ 	unsigned long min, max;
+ 	int ret, i, j;
+ 
++	if (!res)
++		return NULL;
++
+ 	low = low || !(s->features & SS_CAP_PAGE_REGS);
+ 
+ 	data.mask = align - 1;
+diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
+index f993a55cde20f..faf2a62435674 100644
+--- a/drivers/power/supply/bq25890_charger.c
++++ b/drivers/power/supply/bq25890_charger.c
+@@ -521,12 +521,12 @@ static void bq25890_handle_state_change(struct bq25890_device *bq,
+ 
+ 	if (!new_state->online) {			     /* power removed */
+ 		/* disable ADC */
+-		ret = bq25890_field_write(bq, F_CONV_START, 0);
++		ret = bq25890_field_write(bq, F_CONV_RATE, 0);
+ 		if (ret < 0)
+ 			goto error;
+ 	} else if (!old_state.online) {			    /* power inserted */
+ 		/* enable ADC, to have control of charge current/voltage */
+-		ret = bq25890_field_write(bq, F_CONV_START, 1);
++		ret = bq25890_field_write(bq, F_CONV_RATE, 1);
+ 		if (ret < 0)
+ 			goto error;
+ 	}
+diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
+index b962dbe51750d..1dbd8419df7d7 100644
+--- a/drivers/rtc/rtc-cmos.c
++++ b/drivers/rtc/rtc-cmos.c
+@@ -342,7 +342,10 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
+ 	min = t->time.tm_min;
+ 	sec = t->time.tm_sec;
+ 
++	spin_lock_irq(&rtc_lock);
+ 	rtc_control = CMOS_READ(RTC_CONTROL);
++	spin_unlock_irq(&rtc_lock);
++
+ 	if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
+ 		/* Writing 0xff means "don't care" or "match all".  */
+ 		mon = (mon <= 12) ? bin2bcd(mon) : 0xff;
+diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
+index 9b63e46edffcc..a2a4c6e22c68d 100644
+--- a/drivers/scsi/sr.c
++++ b/drivers/scsi/sr.c
+@@ -882,7 +882,7 @@ static void get_capabilities(struct scsi_cd *cd)
+ 
+ 
+ 	/* allocate transfer buffer */
+-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
++	buffer = kmalloc(512, GFP_KERNEL);
+ 	if (!buffer) {
+ 		sr_printk(KERN_ERR, cd, "out of memory.\n");
+ 		return;
+diff --git a/drivers/scsi/sr_vendor.c b/drivers/scsi/sr_vendor.c
+index 11a238cb22223..629bfe1b20263 100644
+--- a/drivers/scsi/sr_vendor.c
++++ b/drivers/scsi/sr_vendor.c
+@@ -118,7 +118,7 @@ int sr_set_blocklength(Scsi_CD *cd, int blocklength)
+ 		density = (blocklength > 2048) ? 0x81 : 0x83;
+ #endif
+ 
+-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
++	buffer = kmalloc(512, GFP_KERNEL);
+ 	if (!buffer)
+ 		return -ENOMEM;
+ 
+@@ -166,7 +166,7 @@ int sr_cd_check(struct cdrom_device_info *cdi)
+ 	if (cd->cdi.mask & CDC_MULTI_SESSION)
+ 		return 0;
+ 
+-	buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
++	buffer = kmalloc(512, GFP_KERNEL);
+ 	if (!buffer)
+ 		return -ENOMEM;
+ 
+diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c
+index c09a0fef0fe60..a1785b0239667 100644
+--- a/drivers/scsi/ufs/tc-dwc-g210-pci.c
++++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c
+@@ -140,7 +140,6 @@ tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+ 		return err;
+ 	}
+ 
+-	pci_set_drvdata(pdev, hba);
+ 	pm_runtime_put_noidle(&pdev->dev);
+ 	pm_runtime_allow(&pdev->dev);
+ 
+diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
+index b47decc1fb5ba..e9b0cc4cbb4d2 100644
+--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
++++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
+@@ -350,8 +350,6 @@ int ufshcd_pltfrm_init(struct platform_device *pdev,
+ 		goto dealloc_host;
+ 	}
+ 
+-	platform_set_drvdata(pdev, hba);
+-
+ 	pm_runtime_set_active(&pdev->dev);
+ 	pm_runtime_enable(&pdev->dev);
+ 
+diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
+index a767d942bfca5..cf7946c840165 100644
+--- a/drivers/scsi/ufs/ufshcd.c
++++ b/drivers/scsi/ufs/ufshcd.c
+@@ -6766,6 +6766,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
+ 	struct Scsi_Host *host = hba->host;
+ 	struct device *dev = hba->dev;
+ 
++	/*
++	 * dev_set_drvdata() must be called before any callbacks are registered
++	 * that use dev_get_drvdata() (frequency scaling, clock scaling, hwmon,
++	 * sysfs).
++	 */
++	dev_set_drvdata(dev, hba);
++
+ 	if (!mmio_base) {
+ 		dev_err(hba->dev,
+ 		"Invalid memory reference for mmio_base is NULL\n");
+diff --git a/drivers/spi/spi-meson-spifc.c b/drivers/spi/spi-meson-spifc.c
+index 616566e793c62..28975b6f054fa 100644
+--- a/drivers/spi/spi-meson-spifc.c
++++ b/drivers/spi/spi-meson-spifc.c
+@@ -357,6 +357,7 @@ static int meson_spifc_probe(struct platform_device *pdev)
+ 	return 0;
+ out_clk:
+ 	clk_disable_unprepare(spifc->clk);
++	pm_runtime_disable(spifc->dev);
+ out_err:
+ 	spi_master_put(master);
+ 	return ret;
+diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
+index 9d4e3b0d366f4..fbaf3c407989d 100644
+--- a/drivers/staging/wlan-ng/hfa384x_usb.c
++++ b/drivers/staging/wlan-ng/hfa384x_usb.c
+@@ -3848,18 +3848,18 @@ static void hfa384x_usb_throttlefn(unsigned long data)
+ 
+ 	spin_lock_irqsave(&hw->ctlxq.lock, flags);
+ 
+-	/*
+-	 * We need to check BOTH the RX and the TX throttle controls,
+-	 * so we use the bitwise OR instead of the logical OR.
+-	 */
+ 	pr_debug("flags=0x%lx\n", hw->usb_flags);
+-	if (!hw->wlandev->hwremoved &&
+-	    ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
+-	      !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags)) |
+-	     (test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) &&
+-	      !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags))
+-	    )) {
+-		schedule_work(&hw->usb_work);
++	if (!hw->wlandev->hwremoved) {
++		bool rx_throttle = test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
++				   !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags);
++		bool tx_throttle = test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) &&
++				   !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags);
++		/*
++		 * We need to check BOTH the RX and the TX throttle controls,
++		 * so we use the bitwise OR instead of the logical OR.
++		 */
++		if (rx_throttle | tx_throttle)
++			schedule_work(&hw->usb_work);
+ 	}
+ 
+ 	spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
+diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
+index 5d41d5b92619a..7f4ba92739663 100644
+--- a/drivers/tty/serial/amba-pl010.c
++++ b/drivers/tty/serial/amba-pl010.c
+@@ -465,14 +465,11 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
+ 	if ((termios->c_cflag & CREAD) == 0)
+ 		uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
+ 
+-	/* first, disable everything */
+ 	old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
+ 
+ 	if (UART_ENABLE_MS(port, termios->c_cflag))
+ 		old_cr |= UART010_CR_MSIE;
+ 
+-	writel(0, uap->port.membase + UART010_CR);
+-
+ 	/* Set baud rate */
+ 	quot -= 1;
+ 	writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
+diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
+index e91bdd7d4c054..ad1d665e9962f 100644
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -2090,32 +2090,13 @@ static const char *pl011_type(struct uart_port *port)
+ 	return uap->port.type == PORT_AMBA ? uap->type : NULL;
+ }
+ 
+-/*
+- * Release the memory region(s) being used by 'port'
+- */
+-static void pl011_release_port(struct uart_port *port)
+-{
+-	release_mem_region(port->mapbase, SZ_4K);
+-}
+-
+-/*
+- * Request the memory region(s) being used by 'port'
+- */
+-static int pl011_request_port(struct uart_port *port)
+-{
+-	return request_mem_region(port->mapbase, SZ_4K, "uart-pl011")
+-			!= NULL ? 0 : -EBUSY;
+-}
+-
+ /*
+  * Configure/autoconfigure the port.
+  */
+ static void pl011_config_port(struct uart_port *port, int flags)
+ {
+-	if (flags & UART_CONFIG_TYPE) {
++	if (flags & UART_CONFIG_TYPE)
+ 		port->type = PORT_AMBA;
+-		pl011_request_port(port);
+-	}
+ }
+ 
+ /*
+@@ -2130,6 +2111,8 @@ static int pl011_verify_port(struct uart_port *port, struct serial_struct *ser)
+ 		ret = -EINVAL;
+ 	if (ser->baud_base < 9600)
+ 		ret = -EINVAL;
++	if (port->mapbase != (unsigned long) ser->iomem_base)
++		ret = -EINVAL;
+ 	return ret;
+ }
+ 
+@@ -2147,8 +2130,6 @@ static struct uart_ops amba_pl011_pops = {
+ 	.flush_buffer	= pl011_dma_flush_buffer,
+ 	.set_termios	= pl011_set_termios,
+ 	.type		= pl011_type,
+-	.release_port	= pl011_release_port,
+-	.request_port	= pl011_request_port,
+ 	.config_port	= pl011_config_port,
+ 	.verify_port	= pl011_verify_port,
+ #ifdef CONFIG_CONSOLE_POLL
+@@ -2178,8 +2159,6 @@ static const struct uart_ops sbsa_uart_pops = {
+ 	.shutdown	= sbsa_uart_shutdown,
+ 	.set_termios	= sbsa_uart_set_termios,
+ 	.type		= pl011_type,
+-	.release_port	= pl011_release_port,
+-	.request_port	= pl011_request_port,
+ 	.config_port	= pl011_config_port,
+ 	.verify_port	= pl011_verify_port,
+ #ifdef CONFIG_CONSOLE_POLL
+diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
+index 4a7eb85f7c857..5dd04a1145b40 100644
+--- a/drivers/tty/serial/atmel_serial.c
++++ b/drivers/tty/serial/atmel_serial.c
+@@ -928,6 +928,13 @@ static void atmel_tx_dma(struct uart_port *port)
+ 		desc->callback = atmel_complete_tx_dma;
+ 		desc->callback_param = atmel_port;
+ 		atmel_port->cookie_tx = dmaengine_submit(desc);
++		if (dma_submit_error(atmel_port->cookie_tx)) {
++			dev_err(port->dev, "dma_submit_error %d\n",
++				atmel_port->cookie_tx);
++			return;
++		}
++
++		dma_async_issue_pending(chan);
+ 	}
+ 
+ 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+@@ -1186,6 +1193,13 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
+ 	desc->callback_param = port;
+ 	atmel_port->desc_rx = desc;
+ 	atmel_port->cookie_rx = dmaengine_submit(desc);
++	if (dma_submit_error(atmel_port->cookie_rx)) {
++		dev_err(port->dev, "dma_submit_error %d\n",
++			atmel_port->cookie_rx);
++		goto chan_err;
++	}
++
++	dma_async_issue_pending(atmel_port->chan_rx);
+ 
+ 	return 0;
+ 
+diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
+index e97961dc3622d..ec458add38833 100644
+--- a/drivers/tty/serial/serial_core.c
++++ b/drivers/tty/serial/serial_core.c
+@@ -2349,7 +2349,8 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state,
+ 		 * We probably don't need a spinlock around this, but
+ 		 */
+ 		spin_lock_irqsave(&port->lock, flags);
+-		port->ops->set_mctrl(port, port->mctrl & TIOCM_DTR);
++		port->mctrl &= TIOCM_DTR;
++		port->ops->set_mctrl(port, port->mctrl);
+ 		spin_unlock_irqrestore(&port->lock, flags);
+ 
+ 		/*
+diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
+index 1dd4c65e9188a..2246731d96b0e 100644
+--- a/drivers/usb/core/hcd.c
++++ b/drivers/usb/core/hcd.c
+@@ -760,6 +760,7 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd)
+ {
+ 	struct urb	*urb;
+ 	int		length;
++	int		status;
+ 	unsigned long	flags;
+ 	char		buffer[6];	/* Any root hubs with > 31 ports? */
+ 
+@@ -777,11 +778,17 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd)
+ 		if (urb) {
+ 			clear_bit(HCD_FLAG_POLL_PENDING, &hcd->flags);
+ 			hcd->status_urb = NULL;
++			if (urb->transfer_buffer_length >= length) {
++				status = 0;
++			} else {
++				status = -EOVERFLOW;
++				length = urb->transfer_buffer_length;
++			}
+ 			urb->actual_length = length;
+ 			memcpy(urb->transfer_buffer, buffer, length);
+ 
+ 			usb_hcd_unlink_urb_from_ep(hcd, urb);
+-			usb_hcd_giveback_urb(hcd, urb, 0);
++			usb_hcd_giveback_urb(hcd, urb, status);
+ 		} else {
+ 			length = 0;
+ 			set_bit(HCD_FLAG_POLL_PENDING, &hcd->flags);
+diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
+index 0abcf8bbb73fe..33bf5ba438397 100644
+--- a/drivers/usb/core/hub.c
++++ b/drivers/usb/core/hub.c
+@@ -1070,7 +1070,10 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
+ 		} else {
+ 			hub_power_on(hub, true);
+ 		}
+-	}
++	/* Give some time on remote wakeup to let links to transit to U0 */
++	} else if (hub_is_superspeed(hub->hdev))
++		msleep(20);
++
+  init2:
+ 
+ 	/*
+@@ -1185,7 +1188,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
+ 			 */
+ 			if (portchange || (hub_is_superspeed(hub->hdev) &&
+ 						port_resumed))
+-				set_bit(port1, hub->change_bits);
++				set_bit(port1, hub->event_bits);
+ 
+ 		} else if (udev->persist_enabled) {
+ #ifdef CONFIG_PM
+diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
+index 0336392686935..e4826454de1a7 100644
+--- a/drivers/usb/gadget/function/f_fs.c
++++ b/drivers/usb/gadget/function/f_fs.c
+@@ -608,7 +608,7 @@ static int ffs_ep0_open(struct inode *inode, struct file *file)
+ 	file->private_data = ffs;
+ 	ffs_data_opened(ffs);
+ 
+-	return 0;
++	return stream_open(inode, file);
+ }
+ 
+ static int ffs_ep0_release(struct inode *inode, struct file *file)
+@@ -1071,7 +1071,7 @@ ffs_epfile_open(struct inode *inode, struct file *file)
+ 	file->private_data = epfile;
+ 	ffs_data_opened(epfile->ffs);
+ 
+-	return 0;
++	return stream_open(inode, file);
+ }
+ 
+ static int ffs_aio_cancel(struct kiocb *kiocb)
+diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
+index 9a82f8308ad7f..0738078fe8b82 100644
+--- a/drivers/usb/misc/ftdi-elan.c
++++ b/drivers/usb/misc/ftdi-elan.c
+@@ -206,6 +206,7 @@ static void ftdi_elan_delete(struct kref *kref)
+ 	mutex_unlock(&ftdi_module_lock);
+ 	kfree(ftdi->bulk_in_buffer);
+ 	ftdi->bulk_in_buffer = NULL;
++	kfree(ftdi);
+ }
+ 
+ static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
+diff --git a/drivers/w1/slaves/w1_ds28e04.c b/drivers/w1/slaves/w1_ds28e04.c
+index 5e348d38ec5c9..f4cf54c256fd8 100644
+--- a/drivers/w1/slaves/w1_ds28e04.c
++++ b/drivers/w1/slaves/w1_ds28e04.c
+@@ -39,7 +39,7 @@ static int w1_strong_pullup = 1;
+ module_param_named(strong_pullup, w1_strong_pullup, int, 0);
+ 
+ /* enable/disable CRC checking on DS28E04-100 memory accesses */
+-static char w1_enable_crccheck = 1;
++static bool w1_enable_crccheck = true;
+ 
+ #define W1_EEPROM_SIZE		512
+ #define W1_PAGE_COUNT		16
+@@ -346,32 +346,18 @@ static BIN_ATTR_RW(pio, 1);
+ static ssize_t crccheck_show(struct device *dev, struct device_attribute *attr,
+ 			     char *buf)
+ {
+-	if (put_user(w1_enable_crccheck + 0x30, buf))
+-		return -EFAULT;
+-
+-	return sizeof(w1_enable_crccheck);
++	return sysfs_emit(buf, "%d\n", w1_enable_crccheck);
+ }
+ 
+ static ssize_t crccheck_store(struct device *dev, struct device_attribute *attr,
+ 			      const char *buf, size_t count)
+ {
+-	char val;
+-
+-	if (count != 1 || !buf)
+-		return -EINVAL;
++	int err = kstrtobool(buf, &w1_enable_crccheck);
+ 
+-	if (get_user(val, buf))
+-		return -EFAULT;
++	if (err)
++		return err;
+ 
+-	/* convert to decimal */
+-	val = val - 0x30;
+-	if (val != 0 && val != 1)
+-		return -EINVAL;
+-
+-	/* set the new value */
+-	w1_enable_crccheck = val;
+-
+-	return sizeof(w1_enable_crccheck);
++	return count;
+ }
+ 
+ static DEVICE_ATTR_RW(crccheck);
+diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
+index bb008ac507fe3..16169b35ab6e5 100644
+--- a/fs/btrfs/backref.c
++++ b/fs/btrfs/backref.c
+@@ -1271,7 +1271,12 @@ again:
+ 	ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 0);
+ 	if (ret < 0)
+ 		goto out;
+-	BUG_ON(ret == 0);
++	if (ret == 0) {
++		/* This shouldn't happen, indicates a bug or fs corruption. */
++		ASSERT(ret != 0);
++		ret = -EUCLEAN;
++		goto out;
++	}
+ 
+ #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
+ 	if (trans && likely(trans->type != __TRANS_DUMMY) &&
+@@ -1432,10 +1437,18 @@ again:
+ 				goto out;
+ 			if (!ret && extent_item_pos) {
+ 				/*
+-				 * we've recorded that parent, so we must extend
+-				 * its inode list here
++				 * We've recorded that parent, so we must extend
++				 * its inode list here.
++				 *
++				 * However if there was corruption we may not
++				 * have found an eie, return an error in this
++				 * case.
+ 				 */
+-				BUG_ON(!eie);
++				ASSERT(eie);
++				if (!eie) {
++					ret = -EUCLEAN;
++					goto out;
++				}
+ 				while (eie->next)
+ 					eie = eie->next;
+ 				eie->next = ref->inode_list;
+diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
+index 3a7f401e943c1..ffab7dc881574 100644
+--- a/fs/dlm/lock.c
++++ b/fs/dlm/lock.c
+@@ -3975,6 +3975,14 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms)
+ 	int from = ms->m_header.h_nodeid;
+ 	int error = 0;
+ 
++	/* currently mixing of user/kernel locks are not supported */
++	if (ms->m_flags & DLM_IFL_USER && ~lkb->lkb_flags & DLM_IFL_USER) {
++		log_error(lkb->lkb_resource->res_ls,
++			  "got user dlm message for a kernel lock");
++		error = -EINVAL;
++		goto out;
++	}
++
+ 	switch (ms->m_type) {
+ 	case DLM_MSG_CONVERT:
+ 	case DLM_MSG_UNLOCK:
+@@ -4003,6 +4011,7 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms)
+ 		error = -EINVAL;
+ 	}
+ 
++out:
+ 	if (error)
+ 		log_error(lkb->lkb_resource->res_ls,
+ 			  "ignore invalid message %d from %d %x %x %x %d",
+diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
+index 75fff707beb6a..e7384a6e6a083 100644
+--- a/fs/ext4/ioctl.c
++++ b/fs/ext4/ioctl.c
+@@ -760,8 +760,6 @@ resizefs_out:
+ 		    sizeof(range)))
+ 			return -EFAULT;
+ 
+-		range.minlen = max((unsigned int)range.minlen,
+-				   q->limits.discard_granularity);
+ 		ret = ext4_trim_fs(sb, &range);
+ 		if (ret < 0)
+ 			return ret;
+diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
+index 807331da9dfc1..2a7fb2cf19b81 100644
+--- a/fs/ext4/mballoc.c
++++ b/fs/ext4/mballoc.c
+@@ -5224,6 +5224,7 @@ out:
+  */
+ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
+ {
++	struct request_queue *q = bdev_get_queue(sb->s_bdev);
+ 	struct ext4_group_info *grp;
+ 	ext4_group_t group, first_group, last_group;
+ 	ext4_grpblk_t cnt = 0, first_cluster, last_cluster;
+@@ -5242,6 +5243,13 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
+ 	    start >= max_blks ||
+ 	    range->len < sb->s_blocksize)
+ 		return -EINVAL;
++	/* No point to try to trim less than discard granularity */
++	if (range->minlen < q->limits.discard_granularity) {
++		minlen = EXT4_NUM_B2C(EXT4_SB(sb),
++			q->limits.discard_granularity >> sb->s_blocksize_bits);
++		if (minlen > EXT4_CLUSTERS_PER_GROUP(sb))
++			goto out;
++	}
+ 	if (end >= max_blks)
+ 		end = max_blks - 1;
+ 	if (end <= first_data_blk)
+diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
+index bce2d696d6b9c..6967ab3306e7d 100644
+--- a/fs/ext4/migrate.c
++++ b/fs/ext4/migrate.c
+@@ -462,12 +462,12 @@ int ext4_ext_migrate(struct inode *inode)
+ 	percpu_down_write(&sbi->s_writepages_rwsem);
+ 
+ 	/*
+-	 * Worst case we can touch the allocation bitmaps, a bgd
+-	 * block, and a block to link in the orphan list.  We do need
+-	 * need to worry about credits for modifying the quota inode.
++	 * Worst case we can touch the allocation bitmaps and a block
++	 * group descriptor block.  We do need need to worry about
++	 * credits for modifying the quota inode.
+ 	 */
+ 	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE,
+-		4 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
++		3 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
+ 
+ 	if (IS_ERR(handle)) {
+ 		retval = PTR_ERR(handle);
+@@ -484,6 +484,13 @@ int ext4_ext_migrate(struct inode *inode)
+ 		ext4_journal_stop(handle);
+ 		goto out_unlock;
+ 	}
++	/*
++	 * Use the correct seed for checksum (i.e. the seed from 'inode').  This
++	 * is so that the metadata blocks will have the correct checksum after
++	 * the migration.
++	 */
++	ei = EXT4_I(inode);
++	EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed;
+ 	i_size_write(tmp_inode, i_size_read(inode));
+ 	/*
+ 	 * Set the i_nlink to zero so it will be deleted later
+@@ -492,7 +499,6 @@ int ext4_ext_migrate(struct inode *inode)
+ 	clear_nlink(tmp_inode);
+ 
+ 	ext4_ext_tree_init(handle, tmp_inode);
+-	ext4_orphan_add(handle, tmp_inode);
+ 	ext4_journal_stop(handle);
+ 
+ 	/*
+@@ -517,17 +523,10 @@ int ext4_ext_migrate(struct inode *inode)
+ 
+ 	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
+ 	if (IS_ERR(handle)) {
+-		/*
+-		 * It is impossible to update on-disk structures without
+-		 * a handle, so just rollback in-core changes and live other
+-		 * work to orphan_list_cleanup()
+-		 */
+-		ext4_orphan_del(NULL, tmp_inode);
+ 		retval = PTR_ERR(handle);
+ 		goto out_tmp_inode;
+ 	}
+ 
+-	ei = EXT4_I(inode);
+ 	i_data = ei->i_data;
+ 	memset(&lb, 0, sizeof(lb));
+ 
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index ca89590d1df57..e17a6396bde6c 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -5602,7 +5602,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
+ 	struct buffer_head *bh;
+ 	handle_t *handle = journal_current_handle();
+ 
+-	if (EXT4_SB(sb)->s_journal && !handle) {
++	if (!handle) {
+ 		ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
+ 			" cancelled because transaction is not started",
+ 			(unsigned long long)off, (unsigned long long)len);
+diff --git a/fs/fuse/acl.c b/fs/fuse/acl.c
+index ec85765502f1f..990529da5354d 100644
+--- a/fs/fuse/acl.c
++++ b/fs/fuse/acl.c
+@@ -19,6 +19,9 @@ struct posix_acl *fuse_get_acl(struct inode *inode, int type)
+ 	void *value = NULL;
+ 	struct posix_acl *acl;
+ 
++	if (fuse_is_bad(inode))
++		return ERR_PTR(-EIO);
++
+ 	if (!fc->posix_acl || fc->no_getxattr)
+ 		return NULL;
+ 
+@@ -53,6 +56,9 @@ int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type)
+ 	const char *name;
+ 	int ret;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!fc->posix_acl || fc->no_setxattr)
+ 		return -EOPNOTSUPP;
+ 
+diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
+index b41cc537eb311..c40bdfab0a859 100644
+--- a/fs/fuse/dir.c
++++ b/fs/fuse/dir.c
+@@ -187,7 +187,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
+ 	int ret;
+ 
+ 	inode = d_inode_rcu(entry);
+-	if (inode && is_bad_inode(inode))
++	if (inode && fuse_is_bad(inode))
+ 		goto invalid;
+ 	else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) ||
+ 		 (flags & LOOKUP_REVAL)) {
+@@ -364,6 +364,9 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
+ 	bool outarg_valid = true;
+ 	bool locked;
+ 
++	if (fuse_is_bad(dir))
++		return ERR_PTR(-EIO);
++
+ 	locked = fuse_lock_inode(dir);
+ 	err = fuse_lookup_name(dir->i_sb, get_node_id(dir), &entry->d_name,
+ 			       &outarg, &inode);
+@@ -504,6 +507,9 @@ static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
+ 	struct fuse_conn *fc = get_fuse_conn(dir);
+ 	struct dentry *res = NULL;
+ 
++	if (fuse_is_bad(dir))
++		return -EIO;
++
+ 	if (d_in_lookup(entry)) {
+ 		res = fuse_lookup(dir, entry, 0);
+ 		if (IS_ERR(res))
+@@ -551,6 +557,9 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args,
+ 	int err;
+ 	struct fuse_forget_link *forget;
+ 
++	if (fuse_is_bad(dir))
++		return -EIO;
++
+ 	forget = fuse_alloc_forget();
+ 	if (!forget)
+ 		return -ENOMEM;
+@@ -672,6 +681,9 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry)
+ 	struct fuse_conn *fc = get_fuse_conn(dir);
+ 	FUSE_ARGS(args);
+ 
++	if (fuse_is_bad(dir))
++		return -EIO;
++
+ 	args.in.h.opcode = FUSE_UNLINK;
+ 	args.in.h.nodeid = get_node_id(dir);
+ 	args.in.numargs = 1;
+@@ -708,6 +720,9 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry)
+ 	struct fuse_conn *fc = get_fuse_conn(dir);
+ 	FUSE_ARGS(args);
+ 
++	if (fuse_is_bad(dir))
++		return -EIO;
++
+ 	args.in.h.opcode = FUSE_RMDIR;
+ 	args.in.h.nodeid = get_node_id(dir);
+ 	args.in.numargs = 1;
+@@ -786,6 +801,9 @@ static int fuse_rename2(struct inode *olddir, struct dentry *oldent,
+ 	struct fuse_conn *fc = get_fuse_conn(olddir);
+ 	int err;
+ 
++	if (fuse_is_bad(olddir))
++		return -EIO;
++
+ 	if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE))
+ 		return -EINVAL;
+ 
+@@ -921,7 +939,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
+ 	if (!err) {
+ 		if (fuse_invalid_attr(&outarg.attr) ||
+ 		    (inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
+-			make_bad_inode(inode);
++			fuse_make_bad(inode);
+ 			err = -EIO;
+ 		} else {
+ 			fuse_change_attributes(inode, &outarg.attr,
+@@ -1114,6 +1132,9 @@ static int fuse_permission(struct inode *inode, int mask)
+ 	bool refreshed = false;
+ 	int err = 0;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!fuse_allow_current_process(fc))
+ 		return -EACCES;
+ 
+@@ -1251,7 +1272,7 @@ retry:
+ 			dput(dentry);
+ 			goto retry;
+ 		}
+-		if (is_bad_inode(inode)) {
++		if (fuse_is_bad(inode)) {
+ 			dput(dentry);
+ 			return -EIO;
+ 		}
+@@ -1349,7 +1370,7 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx)
+ 	u64 attr_version = 0;
+ 	bool locked;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	req = fuse_get_req(fc, 1);
+@@ -1409,6 +1430,9 @@ static const char *fuse_get_link(struct dentry *dentry,
+ 	if (!dentry)
+ 		return ERR_PTR(-ECHILD);
+ 
++	if (fuse_is_bad(inode))
++		return ERR_PTR(-EIO);
++
+ 	link = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ 	if (!link)
+ 		return ERR_PTR(-ENOMEM);
+@@ -1707,7 +1731,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
+ 
+ 	if (fuse_invalid_attr(&outarg.attr) ||
+ 	    (inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
+-		make_bad_inode(inode);
++		fuse_make_bad(inode);
+ 		err = -EIO;
+ 		goto error;
+ 	}
+@@ -1763,6 +1787,9 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
+ 	struct file *file = (attr->ia_valid & ATTR_FILE) ? attr->ia_file : NULL;
+ 	int ret;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!fuse_allow_current_process(get_fuse_conn(inode)))
+ 		return -EACCES;
+ 
+@@ -1821,6 +1848,9 @@ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
+ 	struct inode *inode = d_inode(entry);
+ 	struct fuse_conn *fc = get_fuse_conn(inode);
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!fuse_allow_current_process(fc))
+ 		return -EACCES;
+ 
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index cea2317e01380..8aef8e56eb1b6 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -206,6 +206,9 @@ int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
+ 			  fc->atomic_o_trunc &&
+ 			  fc->writeback_cache;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	err = generic_file_open(inode, file);
+ 	if (err)
+ 		return err;
+@@ -411,7 +414,7 @@ static int fuse_flush(struct file *file, fl_owner_t id)
+ 	struct fuse_flush_in inarg;
+ 	int err;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	if (fc->no_flush)
+@@ -459,7 +462,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
+ 	struct fuse_fsync_in inarg;
+ 	int err;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	inode_lock(inode);
+@@ -771,7 +774,7 @@ static int fuse_readpage(struct file *file, struct page *page)
+ 	int err;
+ 
+ 	err = -EIO;
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		goto out;
+ 
+ 	err = fuse_do_readpage(file, page);
+@@ -898,7 +901,7 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
+ 	int nr_alloc = min_t(unsigned, nr_pages, FUSE_MAX_PAGES_PER_REQ);
+ 
+ 	err = -EIO;
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		goto out;
+ 
+ 	data.file = file;
+@@ -928,6 +931,9 @@ static ssize_t fuse_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
+ 	struct inode *inode = iocb->ki_filp->f_mapping->host;
+ 	struct fuse_conn *fc = get_fuse_conn(inode);
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	/*
+ 	 * In auto invalidate mode, always update attributes on read.
+ 	 * Otherwise, only update if we attempt to read past EOF (to ensure
+@@ -1123,7 +1129,7 @@ static ssize_t fuse_perform_write(struct file *file,
+ 	int err = 0;
+ 	ssize_t res = 0;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	if (inode->i_size < pos + iov_iter_count(ii))
+@@ -1180,6 +1186,9 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
+ 	ssize_t err;
+ 	loff_t endbyte = 0;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (get_fuse_conn(inode)->writeback_cache) {
+ 		/* Update size (EOF optimization) and mode (SUID clearing) */
+ 		err = fuse_update_attributes(mapping->host, NULL, file, NULL);
+@@ -1415,7 +1424,7 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io,
+ 	struct file *file = io->file;
+ 	struct inode *inode = file_inode(file);
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	res = fuse_direct_io(io, iter, ppos, 0);
+@@ -1438,7 +1447,7 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from)
+ 	struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(file);
+ 	ssize_t res;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	/* Don't allow parallel writes to the same file */
+@@ -1911,7 +1920,7 @@ static int fuse_writepages(struct address_space *mapping,
+ 	int err;
+ 
+ 	err = -EIO;
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		goto out;
+ 
+ 	data.inode = inode;
+@@ -2687,7 +2696,7 @@ long fuse_ioctl_common(struct file *file, unsigned int cmd,
+ 	if (!fuse_allow_current_process(fc))
+ 		return -EACCES;
+ 
+-	if (is_bad_inode(inode))
++	if (fuse_is_bad(inode))
+ 		return -EIO;
+ 
+ 	return fuse_do_ioctl(file, cmd, arg, flags);
+diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
+index f84dd6d87d90f..7e4b0e298bc73 100644
+--- a/fs/fuse/fuse_i.h
++++ b/fs/fuse/fuse_i.h
+@@ -115,6 +115,8 @@ enum {
+ 	FUSE_I_INIT_RDPLUS,
+ 	/** An operation changing file size is in progress  */
+ 	FUSE_I_SIZE_UNSTABLE,
++	/* Bad inode */
++	FUSE_I_BAD,
+ };
+ 
+ struct fuse_conn;
+@@ -688,6 +690,17 @@ static inline u64 get_node_id(struct inode *inode)
+ 	return get_fuse_inode(inode)->nodeid;
+ }
+ 
++static inline void fuse_make_bad(struct inode *inode)
++{
++	remove_inode_hash(inode);
++	set_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state);
++}
++
++static inline bool fuse_is_bad(struct inode *inode)
++{
++	return unlikely(test_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state));
++}
++
+ /** Device operations */
+ extern const struct file_operations fuse_dev_operations;
+ 
+diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
+index 7a9b1069d267b..77b8f0f264078 100644
+--- a/fs/fuse/inode.c
++++ b/fs/fuse/inode.c
+@@ -316,7 +316,7 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
+ 		unlock_new_inode(inode);
+ 	} else if ((inode->i_mode ^ attr->mode) & S_IFMT) {
+ 		/* Inode has changed type, any I/O on the old should fail */
+-		make_bad_inode(inode);
++		fuse_make_bad(inode);
+ 		iput(inode);
+ 		goto retry;
+ 	}
+diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c
+index 3caac46b08b0e..134bbc432ae60 100644
+--- a/fs/fuse/xattr.c
++++ b/fs/fuse/xattr.c
+@@ -113,6 +113,9 @@ ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
+ 	struct fuse_getxattr_out outarg;
+ 	ssize_t ret;
+ 
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!fuse_allow_current_process(fc))
+ 		return -EACCES;
+ 
+@@ -178,6 +181,9 @@ static int fuse_xattr_get(const struct xattr_handler *handler,
+ 			 struct dentry *dentry, struct inode *inode,
+ 			 const char *name, void *value, size_t size)
+ {
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	return fuse_getxattr(inode, name, value, size);
+ }
+ 
+@@ -186,6 +192,9 @@ static int fuse_xattr_set(const struct xattr_handler *handler,
+ 			  const char *name, const void *value, size_t size,
+ 			  int flags)
+ {
++	if (fuse_is_bad(inode))
++		return -EIO;
++
+ 	if (!value)
+ 		return fuse_removexattr(inode, name);
+ 
+diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
+index c12476e309c67..eb4e4d784d26e 100644
+--- a/fs/jffs2/file.c
++++ b/fs/jffs2/file.c
+@@ -135,20 +135,15 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ 	struct page *pg;
+ 	struct inode *inode = mapping->host;
+ 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
++	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
+ 	pgoff_t index = pos >> PAGE_SHIFT;
+ 	uint32_t pageofs = index << PAGE_SHIFT;
+ 	int ret = 0;
+ 
+-	pg = grab_cache_page_write_begin(mapping, index, flags);
+-	if (!pg)
+-		return -ENOMEM;
+-	*pagep = pg;
+-
+ 	jffs2_dbg(1, "%s()\n", __func__);
+ 
+ 	if (pageofs > inode->i_size) {
+ 		/* Make new hole frag from old EOF to new page */
+-		struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
+ 		struct jffs2_raw_inode ri;
+ 		struct jffs2_full_dnode *fn;
+ 		uint32_t alloc_len;
+@@ -159,7 +154,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ 		ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
+ 					  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+ 		if (ret)
+-			goto out_page;
++			goto out_err;
+ 
+ 		mutex_lock(&f->sem);
+ 		memset(&ri, 0, sizeof(ri));
+@@ -189,7 +184,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ 			ret = PTR_ERR(fn);
+ 			jffs2_complete_reservation(c);
+ 			mutex_unlock(&f->sem);
+-			goto out_page;
++			goto out_err;
+ 		}
+ 		ret = jffs2_add_full_dnode_to_inode(c, f, fn);
+ 		if (f->metadata) {
+@@ -204,13 +199,26 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ 			jffs2_free_full_dnode(fn);
+ 			jffs2_complete_reservation(c);
+ 			mutex_unlock(&f->sem);
+-			goto out_page;
++			goto out_err;
+ 		}
+ 		jffs2_complete_reservation(c);
+ 		inode->i_size = pageofs;
+ 		mutex_unlock(&f->sem);
+ 	}
+ 
++	/*
++	 * While getting a page and reading data in, lock c->alloc_sem until
++	 * the page is Uptodate. Otherwise GC task may attempt to read the same
++	 * page in read_cache_page(), which causes a deadlock.
++	 */
++	mutex_lock(&c->alloc_sem);
++	pg = grab_cache_page_write_begin(mapping, index, flags);
++	if (!pg) {
++		ret = -ENOMEM;
++		goto release_sem;
++	}
++	*pagep = pg;
++
+ 	/*
+ 	 * Read in the page if it wasn't already present. Cannot optimize away
+ 	 * the whole page write case until jffs2_write_end can handle the
+@@ -220,15 +228,17 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
+ 		mutex_lock(&f->sem);
+ 		ret = jffs2_do_readpage_nolock(inode, pg);
+ 		mutex_unlock(&f->sem);
+-		if (ret)
+-			goto out_page;
++		if (ret) {
++			unlock_page(pg);
++			put_page(pg);
++			goto release_sem;
++		}
+ 	}
+ 	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
+-	return ret;
+ 
+-out_page:
+-	unlock_page(pg);
+-	put_page(pg);
++release_sem:
++	mutex_unlock(&c->alloc_sem);
++out_err:
+ 	return ret;
+ }
+ 
+diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
+index 727a9e3fa806f..ce58e857ae3bc 100644
+--- a/fs/ubifs/super.c
++++ b/fs/ubifs/super.c
+@@ -1695,7 +1695,6 @@ out:
+ 		kthread_stop(c->bgt);
+ 		c->bgt = NULL;
+ 	}
+-	free_wbufs(c);
+ 	kfree(c->write_reserve_buf);
+ 	c->write_reserve_buf = NULL;
+ 	vfree(c->ileb_buf);
+diff --git a/include/linux/mm.h b/include/linux/mm.h
+index 7a4c035b187f3..81ee5d0b26424 100644
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -1269,6 +1269,8 @@ int copy_page_range(struct mm_struct *dst, struct mm_struct *src,
+ 			struct vm_area_struct *vma);
+ void unmap_mapping_range(struct address_space *mapping,
+ 		loff_t const holebegin, loff_t const holelen, int even_cows);
++int follow_pte_pmd(struct mm_struct *mm, unsigned long address,
++			     pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp);
+ int follow_pfn(struct vm_area_struct *vma, unsigned long address,
+ 	unsigned long *pfn);
+ int follow_phys(struct vm_area_struct *vma, unsigned long address,
+diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
+index e585018498d59..d574361943ea8 100644
+--- a/include/linux/rbtree.h
++++ b/include/linux/rbtree.h
+@@ -44,10 +44,25 @@ struct rb_root {
+ 	struct rb_node *rb_node;
+ };
+ 
++/*
++ * Leftmost-cached rbtrees.
++ *
++ * We do not cache the rightmost node based on footprint
++ * size vs number of potential users that could benefit
++ * from O(1) rb_last(). Just not worth it, users that want
++ * this feature can always implement the logic explicitly.
++ * Furthermore, users that want to cache both pointers may
++ * find it a bit asymmetric, but that's ok.
++ */
++struct rb_root_cached {
++	struct rb_root rb_root;
++	struct rb_node *rb_leftmost;
++};
+ 
+ #define rb_parent(r)   ((struct rb_node *)((r)->__rb_parent_color & ~3))
+ 
+ #define RB_ROOT	(struct rb_root) { NULL, }
++#define RB_ROOT_CACHED (struct rb_root_cached) { {NULL, }, NULL }
+ #define	rb_entry(ptr, type, member) container_of(ptr, type, member)
+ 
+ #define RB_EMPTY_ROOT(root)  (READ_ONCE((root)->rb_node) == NULL)
+@@ -69,6 +84,12 @@ extern struct rb_node *rb_prev(const struct rb_node *);
+ extern struct rb_node *rb_first(const struct rb_root *);
+ extern struct rb_node *rb_last(const struct rb_root *);
+ 
++extern void rb_insert_color_cached(struct rb_node *,
++				   struct rb_root_cached *, bool);
++extern void rb_erase_cached(struct rb_node *node, struct rb_root_cached *);
++/* Same as rb_first(), but O(1) */
++#define rb_first_cached(root) (root)->rb_leftmost
++
+ /* Postorder iteration - always visit the parent after its children */
+ extern struct rb_node *rb_first_postorder(const struct rb_root *);
+ extern struct rb_node *rb_next_postorder(const struct rb_node *);
+diff --git a/include/linux/rbtree_augmented.h b/include/linux/rbtree_augmented.h
+index d076183e49bec..023d64657e956 100644
+--- a/include/linux/rbtree_augmented.h
++++ b/include/linux/rbtree_augmented.h
+@@ -41,7 +41,9 @@ struct rb_augment_callbacks {
+ 	void (*rotate)(struct rb_node *old, struct rb_node *new);
+ };
+ 
+-extern void __rb_insert_augmented(struct rb_node *node, struct rb_root *root,
++extern void __rb_insert_augmented(struct rb_node *node,
++				  struct rb_root *root,
++				  bool newleft, struct rb_node **leftmost,
+ 	void (*augment_rotate)(struct rb_node *old, struct rb_node *new));
+ /*
+  * Fixup the rbtree and update the augmented information when rebalancing.
+@@ -57,7 +59,16 @@ static inline void
+ rb_insert_augmented(struct rb_node *node, struct rb_root *root,
+ 		    const struct rb_augment_callbacks *augment)
+ {
+-	__rb_insert_augmented(node, root, augment->rotate);
++	__rb_insert_augmented(node, root, false, NULL, augment->rotate);
++}
++
++static inline void
++rb_insert_augmented_cached(struct rb_node *node,
++			   struct rb_root_cached *root, bool newleft,
++			   const struct rb_augment_callbacks *augment)
++{
++	__rb_insert_augmented(node, &root->rb_root,
++			      newleft, &root->rb_leftmost, augment->rotate);
+ }
+ 
+ #define RB_DECLARE_CALLBACKS(rbstatic, rbname, rbstruct, rbfield,	\
+@@ -148,6 +159,7 @@ extern void __rb_erase_color(struct rb_node *parent, struct rb_root *root,
+ 
+ static __always_inline struct rb_node *
+ __rb_erase_augmented(struct rb_node *node, struct rb_root *root,
++		     struct rb_node **leftmost,
+ 		     const struct rb_augment_callbacks *augment)
+ {
+ 	struct rb_node *child = node->rb_right;
+@@ -155,6 +167,9 @@ __rb_erase_augmented(struct rb_node *node, struct rb_root *root,
+ 	struct rb_node *parent, *rebalance;
+ 	unsigned long pc;
+ 
++	if (leftmost && node == *leftmost)
++		*leftmost = rb_next(node);
++
+ 	if (!tmp) {
+ 		/*
+ 		 * Case 1: node to erase has no more than 1 child (easy!)
+@@ -254,9 +269,21 @@ static __always_inline void
+ rb_erase_augmented(struct rb_node *node, struct rb_root *root,
+ 		   const struct rb_augment_callbacks *augment)
+ {
+-	struct rb_node *rebalance = __rb_erase_augmented(node, root, augment);
++	struct rb_node *rebalance = __rb_erase_augmented(node, root,
++							 NULL, augment);
+ 	if (rebalance)
+ 		__rb_erase_color(rebalance, root, augment->rotate);
+ }
+ 
++static __always_inline void
++rb_erase_augmented_cached(struct rb_node *node, struct rb_root_cached *root,
++			  const struct rb_augment_callbacks *augment)
++{
++	struct rb_node *rebalance = __rb_erase_augmented(node, &root->rb_root,
++							 &root->rb_leftmost,
++							 augment);
++	if (rebalance)
++		__rb_erase_color(rebalance, &root->rb_root, augment->rotate);
++}
++
+ #endif	/* _LINUX_RBTREE_AUGMENTED_H */
+diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h
+index 7eec17ad7fa19..42868a9b43657 100644
+--- a/include/linux/timerqueue.h
++++ b/include/linux/timerqueue.h
+@@ -11,8 +11,7 @@ struct timerqueue_node {
+ };
+ 
+ struct timerqueue_head {
+-	struct rb_root head;
+-	struct timerqueue_node *next;
++	struct rb_root_cached rb_root;
+ };
+ 
+ 
+@@ -28,13 +27,14 @@ extern struct timerqueue_node *timerqueue_iterate_next(
+  *
+  * @head: head of timerqueue
+  *
+- * Returns a pointer to the timer node that has the
+- * earliest expiration time.
++ * Returns a pointer to the timer node that has the earliest expiration time.
+  */
+ static inline
+ struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head)
+ {
+-	return head->next;
++	struct rb_node *leftmost = rb_first_cached(&head->rb_root);
++
++	return rb_entry(leftmost, struct timerqueue_node, node);
+ }
+ 
+ static inline void timerqueue_init(struct timerqueue_node *node)
+@@ -44,7 +44,6 @@ static inline void timerqueue_init(struct timerqueue_node *node)
+ 
+ static inline void timerqueue_init_head(struct timerqueue_head *head)
+ {
+-	head->head = RB_ROOT;
+-	head->next = NULL;
++	head->rb_root = RB_ROOT_CACHED;
+ }
+ #endif /* _LINUX_TIMERQUEUE_H */
+diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
+index 5d5a137b9067f..7ec889291dc48 100644
+--- a/include/net/sch_generic.h
++++ b/include/net/sch_generic.h
+@@ -837,6 +837,7 @@ struct psched_ratecfg {
+ 	u64	rate_bytes_ps; /* bytes per second */
+ 	u32	mult;
+ 	u16	overhead;
++	u16	mpu;
+ 	u8	linklayer;
+ 	u8	shift;
+ };
+@@ -846,6 +847,9 @@ static inline u64 psched_l2t_ns(const struct psched_ratecfg *r,
+ {
+ 	len += r->overhead;
+ 
++	if (len < r->mpu)
++		len = r->mpu;
++
+ 	if (unlikely(r->linklayer == TC_LINKLAYER_ATM))
+ 		return ((u64)(DIV_ROUND_UP(len,48)*53) * r->mult) >> r->shift;
+ 
+@@ -868,6 +872,7 @@ static inline void psched_ratecfg_getrate(struct tc_ratespec *res,
+ 	res->rate = min_t(u64, r->rate_bytes_ps, ~0U);
+ 
+ 	res->overhead = r->overhead;
++	res->mpu = r->mpu;
+ 	res->linklayer = (r->linklayer & TC_LINKLAYER_MASK);
+ }
+ 
+diff --git a/lib/rbtree.c b/lib/rbtree.c
+index eb8a19fee1100..53746be42903b 100644
+--- a/lib/rbtree.c
++++ b/lib/rbtree.c
+@@ -95,10 +95,14 @@ __rb_rotate_set_parents(struct rb_node *old, struct rb_node *new,
+ 
+ static __always_inline void
+ __rb_insert(struct rb_node *node, struct rb_root *root,
++	    bool newleft, struct rb_node **leftmost,
+ 	    void (*augment_rotate)(struct rb_node *old, struct rb_node *new))
+ {
+ 	struct rb_node *parent = rb_red_parent(node), *gparent, *tmp;
+ 
++	if (newleft)
++		*leftmost = node;
++
+ 	while (true) {
+ 		/*
+ 		 * Loop invariant: node is red
+@@ -417,19 +421,38 @@ static const struct rb_augment_callbacks dummy_callbacks = {
+ 
+ void rb_insert_color(struct rb_node *node, struct rb_root *root)
+ {
+-	__rb_insert(node, root, dummy_rotate);
++	__rb_insert(node, root, false, NULL, dummy_rotate);
+ }
+ EXPORT_SYMBOL(rb_insert_color);
+ 
+ void rb_erase(struct rb_node *node, struct rb_root *root)
+ {
+ 	struct rb_node *rebalance;
+-	rebalance = __rb_erase_augmented(node, root, &dummy_callbacks);
++	rebalance = __rb_erase_augmented(node, root,
++					 NULL, &dummy_callbacks);
+ 	if (rebalance)
+ 		____rb_erase_color(rebalance, root, dummy_rotate);
+ }
+ EXPORT_SYMBOL(rb_erase);
+ 
++void rb_insert_color_cached(struct rb_node *node,
++			    struct rb_root_cached *root, bool leftmost)
++{
++	__rb_insert(node, &root->rb_root, leftmost,
++		    &root->rb_leftmost, dummy_rotate);
++}
++EXPORT_SYMBOL(rb_insert_color_cached);
++
++void rb_erase_cached(struct rb_node *node, struct rb_root_cached *root)
++{
++	struct rb_node *rebalance;
++	rebalance = __rb_erase_augmented(node, &root->rb_root,
++					 &root->rb_leftmost, &dummy_callbacks);
++	if (rebalance)
++		____rb_erase_color(rebalance, &root->rb_root, dummy_rotate);
++}
++EXPORT_SYMBOL(rb_erase_cached);
++
+ /*
+  * Augmented rbtree manipulation functions.
+  *
+@@ -438,9 +461,10 @@ EXPORT_SYMBOL(rb_erase);
+  */
+ 
+ void __rb_insert_augmented(struct rb_node *node, struct rb_root *root,
++			   bool newleft, struct rb_node **leftmost,
+ 	void (*augment_rotate)(struct rb_node *old, struct rb_node *new))
+ {
+-	__rb_insert(node, root, augment_rotate);
++	__rb_insert(node, root, newleft, leftmost, augment_rotate);
+ }
+ EXPORT_SYMBOL(__rb_insert_augmented);
+ 
+@@ -485,7 +509,7 @@ struct rb_node *rb_next(const struct rb_node *node)
+ 	 * as we can.
+ 	 */
+ 	if (node->rb_right) {
+-		node = node->rb_right; 
++		node = node->rb_right;
+ 		while (node->rb_left)
+ 			node=node->rb_left;
+ 		return (struct rb_node *)node;
+@@ -517,7 +541,7 @@ struct rb_node *rb_prev(const struct rb_node *node)
+ 	 * as we can.
+ 	 */
+ 	if (node->rb_left) {
+-		node = node->rb_left; 
++		node = node->rb_left;
+ 		while (node->rb_right)
+ 			node=node->rb_right;
+ 		return (struct rb_node *)node;
+diff --git a/lib/timerqueue.c b/lib/timerqueue.c
+index 782ae8ca2c06f..4f99b5c3ac0ec 100644
+--- a/lib/timerqueue.c
++++ b/lib/timerqueue.c
+@@ -38,9 +38,10 @@
+  */
+ bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node)
+ {
+-	struct rb_node **p = &head->head.rb_node;
++	struct rb_node **p = &head->rb_root.rb_root.rb_node;
+ 	struct rb_node *parent = NULL;
+-	struct timerqueue_node  *ptr;
++	struct timerqueue_node *ptr;
++	bool leftmost = true;
+ 
+ 	/* Make sure we don't add nodes that are already added */
+ 	WARN_ON_ONCE(!RB_EMPTY_NODE(&node->node));
+@@ -48,19 +49,17 @@ bool timerqueue_add(struct timerqueue_head *head, struct timerqueue_node *node)
+ 	while (*p) {
+ 		parent = *p;
+ 		ptr = rb_entry(parent, struct timerqueue_node, node);
+-		if (node->expires.tv64 < ptr->expires.tv64)
++		if (node->expires.tv64 < ptr->expires.tv64) {
+ 			p = &(*p)->rb_left;
+-		else
++		} else {
+ 			p = &(*p)->rb_right;
++			leftmost = false;
++		}
+ 	}
+ 	rb_link_node(&node->node, parent, p);
+-	rb_insert_color(&node->node, &head->head);
++	rb_insert_color_cached(&node->node, &head->rb_root, leftmost);
+ 
+-	if (!head->next || node->expires.tv64 < head->next->expires.tv64) {
+-		head->next = node;
+-		return true;
+-	}
+-	return false;
++	return leftmost;
+ }
+ EXPORT_SYMBOL_GPL(timerqueue_add);
+ 
+@@ -76,16 +75,10 @@ bool timerqueue_del(struct timerqueue_head *head, struct timerqueue_node *node)
+ {
+ 	WARN_ON_ONCE(RB_EMPTY_NODE(&node->node));
+ 
+-	/* update next pointer */
+-	if (head->next == node) {
+-		struct rb_node *rbn = rb_next(&node->node);
+-
+-		head->next = rbn ?
+-			rb_entry(rbn, struct timerqueue_node, node) : NULL;
+-	}
+-	rb_erase(&node->node, &head->head);
++	rb_erase_cached(&node->node, &head->rb_root);
+ 	RB_CLEAR_NODE(&node->node);
+-	return head->next != NULL;
++
++	return !RB_EMPTY_ROOT(&head->rb_root.rb_root);
+ }
+ EXPORT_SYMBOL_GPL(timerqueue_del);
+ 
+diff --git a/mm/gup.c b/mm/gup.c
+index 301dd96ef176c..0b80bf3878dcf 100644
+--- a/mm/gup.c
++++ b/mm/gup.c
+@@ -1567,22 +1567,15 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 		next = pgd_addr_end(addr, end);
+ 		if (pgd_none(pgd))
+ 			break;
+-		/*
+-		 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
+-		 * because get_user_pages() may need to cause an early COW in
+-		 * order to avoid confusing the normal COW routines. So only
+-		 * targets that are already writable are safe to do by just
+-		 * looking at the page tables.
+-		 */
+ 		if (unlikely(pgd_huge(pgd))) {
+-			if (!gup_huge_pgd(pgd, pgdp, addr, next, 1,
++			if (!gup_huge_pgd(pgd, pgdp, addr, next, write,
+ 					  pages, &nr))
+ 				break;
+ 		} else if (unlikely(is_hugepd(__hugepd(pgd_val(pgd))))) {
+ 			if (!gup_huge_pd(__hugepd(pgd_val(pgd)), addr,
+-					 PGDIR_SHIFT, next, 1, pages, &nr))
++					 PGDIR_SHIFT, next, write, pages, &nr))
+ 				break;
+-		} else if (!gup_pud_range(pgd, addr, next, 1, pages, &nr))
++		} else if (!gup_pud_range(pgd, addr, next, write, pages, &nr))
+ 			break;
+ 	} while (pgdp++, addr = next, addr != end);
+ 	local_irq_restore(flags);
+@@ -1612,7 +1605,14 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
+ 	int nr, ret;
+ 
+ 	start &= PAGE_MASK;
+-	nr = __get_user_pages_fast(start, nr_pages, write, pages);
++	/*
++	 * The FAST_GUP case requires FOLL_WRITE even for pure reads,
++	 * because get_user_pages() may need to cause an early COW in
++	 * order to avoid confusing the normal COW routines. So only
++	 * targets that are already writable are safe to do by just
++	 * looking at the page tables.
++	 */
++	nr = __get_user_pages_fast(start, nr_pages, 1, pages);
+ 	ret = nr;
+ 
+ 	if (nr < nr_pages) {
+diff --git a/mm/memory.c b/mm/memory.c
+index c2890dc104d9e..2b2cc69ddccef 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -3780,8 +3780,8 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
+ }
+ #endif /* __PAGETABLE_PMD_FOLDED */
+ 
+-static int __follow_pte(struct mm_struct *mm, unsigned long address,
+-		pte_t **ptepp, spinlock_t **ptlp)
++static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address,
++		pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp)
+ {
+ 	pgd_t *pgd;
+ 	pud_t *pud;
+@@ -3798,11 +3798,20 @@ static int __follow_pte(struct mm_struct *mm, unsigned long address,
+ 
+ 	pmd = pmd_offset(pud, address);
+ 	VM_BUG_ON(pmd_trans_huge(*pmd));
+-	if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
+-		goto out;
+ 
+-	/* We cannot handle huge page PFN maps. Luckily they don't exist. */
+-	if (pmd_huge(*pmd))
++	if (pmd_huge(*pmd)) {
++		if (!pmdpp)
++			goto out;
++
++		*ptlp = pmd_lock(mm, pmd);
++		if (pmd_huge(*pmd)) {
++			*pmdpp = pmd;
++			return 0;
++		}
++		spin_unlock(*ptlp);
++	}
++
++	if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
+ 		goto out;
+ 
+ 	ptep = pte_offset_map_lock(mm, pmd, address, ptlp);
+@@ -3825,9 +3834,23 @@ static inline int follow_pte(struct mm_struct *mm, unsigned long address,
+ 
+ 	/* (void) is needed to make gcc happy */
+ 	(void) __cond_lock(*ptlp,
+-			   !(res = __follow_pte(mm, address, ptepp, ptlp)));
++			   !(res = __follow_pte_pmd(mm, address, ptepp, NULL,
++					   ptlp)));
++	return res;
++}
++
++int follow_pte_pmd(struct mm_struct *mm, unsigned long address,
++			     pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp)
++{
++	int res;
++
++	/* (void) is needed to make gcc happy */
++	(void) __cond_lock(*ptlp,
++			   !(res = __follow_pte_pmd(mm, address, ptepp, pmdpp,
++					   ptlp)));
+ 	return res;
+ }
++EXPORT_SYMBOL(follow_pte_pmd);
+ 
+ /**
+  * follow_pfn - look up PFN at a user virtual address
+diff --git a/mm/shmem.c b/mm/shmem.c
+index 31b0c09fe6c60..51aa13f596220 100644
+--- a/mm/shmem.c
++++ b/mm/shmem.c
+@@ -436,7 +436,7 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo,
+ 	struct shmem_inode_info *info;
+ 	struct page *page;
+ 	unsigned long batch = sc ? sc->nr_to_scan : 128;
+-	int removed = 0, split = 0;
++	int split = 0;
+ 
+ 	if (list_empty(&sbinfo->shrinklist))
+ 		return SHRINK_STOP;
+@@ -451,7 +451,6 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo,
+ 		/* inode is about to be evicted */
+ 		if (!inode) {
+ 			list_del_init(&info->shrinklist);
+-			removed++;
+ 			goto next;
+ 		}
+ 
+@@ -459,12 +458,12 @@ static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo,
+ 		if (round_up(inode->i_size, PAGE_SIZE) ==
+ 				round_up(inode->i_size, HPAGE_PMD_SIZE)) {
+ 			list_move(&info->shrinklist, &to_remove);
+-			removed++;
+ 			goto next;
+ 		}
+ 
+ 		list_move(&info->shrinklist, &list);
+ next:
++		sbinfo->shrinklist_len--;
+ 		if (!--batch)
+ 			break;
+ 	}
+@@ -484,7 +483,7 @@ next:
+ 		inode = &info->vfs_inode;
+ 
+ 		if (nr_to_split && split >= nr_to_split)
+-			goto leave;
++			goto move_back;
+ 
+ 		page = find_get_page(inode->i_mapping,
+ 				(inode->i_size & HPAGE_PMD_MASK) >> PAGE_SHIFT);
+@@ -498,38 +497,44 @@ next:
+ 		}
+ 
+ 		/*
+-		 * Leave the inode on the list if we failed to lock
+-		 * the page at this time.
++		 * Move the inode on the list back to shrinklist if we failed
++		 * to lock the page at this time.
+ 		 *
+ 		 * Waiting for the lock may lead to deadlock in the
+ 		 * reclaim path.
+ 		 */
+ 		if (!trylock_page(page)) {
+ 			put_page(page);
+-			goto leave;
++			goto move_back;
+ 		}
+ 
+ 		ret = split_huge_page(page);
+ 		unlock_page(page);
+ 		put_page(page);
+ 
+-		/* If split failed leave the inode on the list */
++		/* If split failed move the inode on the list back to shrinklist */
+ 		if (ret)
+-			goto leave;
++			goto move_back;
+ 
+ 		split++;
+ drop:
+ 		list_del_init(&info->shrinklist);
+-		removed++;
+-leave:
++		goto put;
++move_back:
++		/*
++		 * Make sure the inode is either on the global list or deleted
++		 * from any local list before iput() since it could be deleted
++		 * in another thread once we put the inode (then the local list
++		 * is corrupted).
++		 */
++		spin_lock(&sbinfo->shrinklist_lock);
++		list_move(&info->shrinklist, &sbinfo->shrinklist);
++		sbinfo->shrinklist_len++;
++		spin_unlock(&sbinfo->shrinklist_lock);
++put:
+ 		iput(inode);
+ 	}
+ 
+-	spin_lock(&sbinfo->shrinklist_lock);
+-	list_splice_tail(&list, &sbinfo->shrinklist);
+-	sbinfo->shrinklist_len -= removed;
+-	spin_unlock(&sbinfo->shrinklist_lock);
+-
+ 	return split;
+ }
+ 
+diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
+index 0bb150e68c53f..e2e580c747f4b 100644
+--- a/net/bluetooth/cmtp/core.c
++++ b/net/bluetooth/cmtp/core.c
+@@ -499,9 +499,7 @@ static int __init cmtp_init(void)
+ {
+ 	BT_INFO("CMTP (CAPI Emulation) ver %s", VERSION);
+ 
+-	cmtp_init_sockets();
+-
+-	return 0;
++	return cmtp_init_sockets();
+ }
+ 
+ static void __exit cmtp_exit(void)
+diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
+index b43f31203a430..40e6e5feb1e06 100644
+--- a/net/bluetooth/hci_core.c
++++ b/net/bluetooth/hci_core.c
+@@ -3148,6 +3148,7 @@ int hci_register_dev(struct hci_dev *hdev)
+ 	return id;
+ 
+ err_wqueue:
++	debugfs_remove_recursive(hdev->debugfs);
+ 	destroy_workqueue(hdev->workqueue);
+ 	destroy_workqueue(hdev->req_workqueue);
+ err:
+diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
+index f9484755a9baf..17cfd9f8e98e0 100644
+--- a/net/bluetooth/hci_event.c
++++ b/net/bluetooth/hci_event.c
+@@ -4967,7 +4967,8 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
+ 		struct hci_ev_le_advertising_info *ev = ptr;
+ 		s8 rssi;
+ 
+-		if (ev->length <= HCI_MAX_AD_LENGTH) {
++		if (ev->length <= HCI_MAX_AD_LENGTH &&
++		    ev->data + ev->length <= skb_tail_pointer(skb)) {
+ 			rssi = ev->data[ev->length];
+ 			process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
+ 					   ev->bdaddr_type, NULL, 0, rssi,
+@@ -4977,6 +4978,11 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
+ 		}
+ 
+ 		ptr += sizeof(*ev) + ev->length + 1;
++
++		if (ptr > (void *) skb_tail_pointer(skb) - sizeof(*ev)) {
++			bt_dev_err(hdev, "Malicious advertising data. Stopping processing");
++			break;
++		}
+ 	}
+ 
+ 	hci_dev_unlock(hdev);
+diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
+index 7104d5e64abb3..11d4d18012fed 100644
+--- a/net/bridge/br_netfilter_hooks.c
++++ b/net/bridge/br_netfilter_hooks.c
+@@ -724,6 +724,9 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
+ 	if (nf_bridge->frag_max_size && nf_bridge->frag_max_size < mtu)
+ 		mtu = nf_bridge->frag_max_size;
+ 
++	nf_bridge_update_protocol(skb);
++	nf_bridge_push_encap_header(skb);
++
+ 	if (skb_is_gso(skb) || skb->len + mtu_reserved <= mtu) {
+ 		nf_bridge_info_free(skb);
+ 		return br_dev_queue_push_xmit(net, sk, skb);
+@@ -741,8 +744,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
+ 
+ 		IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
+ 
+-		nf_bridge_update_protocol(skb);
+-
+ 		data = this_cpu_ptr(&brnf_frag_data_storage);
+ 
+ 		data->vlan_tci = skb->vlan_tci;
+@@ -765,8 +766,6 @@ static int br_nf_dev_queue_xmit(struct net *net, struct sock *sk, struct sk_buff
+ 
+ 		IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
+ 
+-		nf_bridge_update_protocol(skb);
+-
+ 		data = this_cpu_ptr(&brnf_frag_data_storage);
+ 		data->encap_size = nf_bridge_encap_header_len(skb);
+ 		data->size = ETH_HLEN + data->encap_size;
+diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
+index 7630fa80db92a..48854eae294fd 100644
+--- a/net/core/net_namespace.c
++++ b/net/core/net_namespace.c
+@@ -132,8 +132,10 @@ static void ops_exit_list(const struct pernet_operations *ops,
+ {
+ 	struct net *net;
+ 	if (ops->exit) {
+-		list_for_each_entry(net, net_exit_list, exit_list)
++		list_for_each_entry(net, net_exit_list, exit_list) {
+ 			ops->exit(net);
++			cond_resched();
++		}
+ 	}
+ 	if (ops->exit_batch)
+ 		ops->exit_batch(net_exit_list);
+diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
+index 553cda6f887ad..b7dc20a65b649 100644
+--- a/net/ipv4/cipso_ipv4.c
++++ b/net/ipv4/cipso_ipv4.c
+@@ -534,16 +534,10 @@ int cipso_v4_doi_remove(u32 doi, struct netlbl_audit *audit_info)
+ 		ret_val = -ENOENT;
+ 		goto doi_remove_return;
+ 	}
+-	if (!atomic_dec_and_test(&doi_def->refcount)) {
+-		spin_unlock(&cipso_v4_doi_list_lock);
+-		ret_val = -EBUSY;
+-		goto doi_remove_return;
+-	}
+ 	list_del_rcu(&doi_def->list);
+ 	spin_unlock(&cipso_v4_doi_list_lock);
+ 
+-	cipso_v4_cache_invalidate();
+-	call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
++	cipso_v4_doi_putdef(doi_def);
+ 	ret_val = 0;
+ 
+ doi_remove_return:
+@@ -600,9 +594,6 @@ void cipso_v4_doi_putdef(struct cipso_v4_doi *doi_def)
+ 
+ 	if (!atomic_dec_and_test(&doi_def->refcount))
+ 		return;
+-	spin_lock(&cipso_v4_doi_list_lock);
+-	list_del_rcu(&doi_def->list);
+-	spin_unlock(&cipso_v4_doi_list_lock);
+ 
+ 	cipso_v4_cache_invalidate();
+ 	call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
+diff --git a/net/ipv6/calipso.c b/net/ipv6/calipso.c
+index b206415bbde74..7628963ddacc3 100644
+--- a/net/ipv6/calipso.c
++++ b/net/ipv6/calipso.c
+@@ -97,6 +97,9 @@ struct calipso_map_cache_entry {
+ 
+ static struct calipso_map_cache_bkt *calipso_cache;
+ 
++static void calipso_cache_invalidate(void);
++static void calipso_doi_putdef(struct calipso_doi *doi_def);
++
+ /* Label Mapping Cache Functions
+  */
+ 
+@@ -458,15 +461,10 @@ static int calipso_doi_remove(u32 doi, struct netlbl_audit *audit_info)
+ 		ret_val = -ENOENT;
+ 		goto doi_remove_return;
+ 	}
+-	if (!atomic_dec_and_test(&doi_def->refcount)) {
+-		spin_unlock(&calipso_doi_list_lock);
+-		ret_val = -EBUSY;
+-		goto doi_remove_return;
+-	}
+ 	list_del_rcu(&doi_def->list);
+ 	spin_unlock(&calipso_doi_list_lock);
+ 
+-	call_rcu(&doi_def->rcu, calipso_doi_free_rcu);
++	calipso_doi_putdef(doi_def);
+ 	ret_val = 0;
+ 
+ doi_remove_return:
+@@ -522,10 +520,8 @@ static void calipso_doi_putdef(struct calipso_doi *doi_def)
+ 
+ 	if (!atomic_dec_and_test(&doi_def->refcount))
+ 		return;
+-	spin_lock(&calipso_doi_list_lock);
+-	list_del_rcu(&doi_def->list);
+-	spin_unlock(&calipso_doi_list_lock);
+ 
++	calipso_cache_invalidate();
+ 	call_rcu(&doi_def->rcu, calipso_doi_free_rcu);
+ }
+ 
+diff --git a/net/netlabel/netlabel_cipso_v4.c b/net/netlabel/netlabel_cipso_v4.c
+index 422fac2a4a3c8..9a256d0fb957a 100644
+--- a/net/netlabel/netlabel_cipso_v4.c
++++ b/net/netlabel/netlabel_cipso_v4.c
+@@ -587,6 +587,7 @@ list_start:
+ 
+ 		break;
+ 	}
++	cipso_v4_doi_putdef(doi_def);
+ 	rcu_read_unlock();
+ 
+ 	genlmsg_end(ans_skb, data);
+@@ -595,12 +596,14 @@ list_start:
+ list_retry:
+ 	/* XXX - this limit is a guesstimate */
+ 	if (nlsze_mult < 4) {
++		cipso_v4_doi_putdef(doi_def);
+ 		rcu_read_unlock();
+ 		kfree_skb(ans_skb);
+ 		nlsze_mult *= 2;
+ 		goto list_start;
+ 	}
+ list_failure_lock:
++	cipso_v4_doi_putdef(doi_def);
+ 	rcu_read_unlock();
+ list_failure:
+ 	kfree_skb(ans_skb);
+diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
+index 92c6fbfd51f79..bc59b2b5f9836 100644
+--- a/net/nfc/llcp_sock.c
++++ b/net/nfc/llcp_sock.c
+@@ -796,6 +796,11 @@ static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
+ 
+ 	lock_sock(sk);
+ 
++	if (!llcp_sock->local) {
++		release_sock(sk);
++		return -ENODEV;
++	}
++
+ 	if (sk->sk_type == SOCK_DGRAM) {
+ 		DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
+ 				 msg->msg_name);
+diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
+index 04ca08f852209..daa24ec7db278 100644
+--- a/net/sched/sch_generic.c
++++ b/net/sched/sch_generic.c
+@@ -996,6 +996,7 @@ void psched_ratecfg_precompute(struct psched_ratecfg *r,
+ {
+ 	memset(r, 0, sizeof(*r));
+ 	r->overhead = conf->overhead;
++	r->mpu = conf->mpu;
+ 	r->rate_bytes_ps = max_t(u64, conf->rate, rate64);
+ 	r->linklayer = (conf->linklayer & TC_LINKLAYER_MASK);
+ 	r->mult = 1;
+diff --git a/net/unix/garbage.c b/net/unix/garbage.c
+index 8bbe1b8e4ff7f..4d283e26d8162 100644
+--- a/net/unix/garbage.c
++++ b/net/unix/garbage.c
+@@ -197,8 +197,11 @@ void wait_for_unix_gc(void)
+ {
+ 	/* If number of inflight sockets is insane,
+ 	 * force a garbage collect right now.
++	 * Paired with the WRITE_ONCE() in unix_inflight(),
++	 * unix_notinflight() and gc_in_progress().
+ 	 */
+-	if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress)
++	if (READ_ONCE(unix_tot_inflight) > UNIX_INFLIGHT_TRIGGER_GC &&
++	    !READ_ONCE(gc_in_progress))
+ 		unix_gc();
+ 	wait_event(unix_gc_wait, gc_in_progress == false);
+ }
+@@ -218,7 +221,9 @@ void unix_gc(void)
+ 	if (gc_in_progress)
+ 		goto out;
+ 
+-	gc_in_progress = true;
++	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
++	WRITE_ONCE(gc_in_progress, true);
++
+ 	/* First, select candidates for garbage collection.  Only
+ 	 * in-flight sockets are considered, and from those only ones
+ 	 * which don't have any external reference.
+@@ -304,7 +309,10 @@ void unix_gc(void)
+ 
+ 	/* All candidates should have been detached by now. */
+ 	BUG_ON(!list_empty(&gc_candidates));
+-	gc_in_progress = false;
++
++	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
++	WRITE_ONCE(gc_in_progress, false);
++
+ 	wake_up(&unix_gc_wait);
+ 
+  out:
+diff --git a/net/unix/scm.c b/net/unix/scm.c
+index df8f636ab1d8c..bf1a8fa8c4f1d 100644
+--- a/net/unix/scm.c
++++ b/net/unix/scm.c
+@@ -56,7 +56,8 @@ void unix_inflight(struct user_struct *user, struct file *fp)
+ 		} else {
+ 			BUG_ON(list_empty(&u->link));
+ 		}
+-		unix_tot_inflight++;
++		/* Paired with READ_ONCE() in wait_for_unix_gc() */
++		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight + 1);
+ 	}
+ 	user->unix_inflight++;
+ 	spin_unlock(&unix_gc_lock);
+@@ -76,7 +77,8 @@ void unix_notinflight(struct user_struct *user, struct file *fp)
+ 
+ 		if (atomic_long_dec_and_test(&u->inflight))
+ 			list_del_init(&u->link);
+-		unix_tot_inflight--;
++		/* Paired with READ_ONCE() in wait_for_unix_gc() */
++		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight - 1);
+ 	}
+ 	user->unix_inflight--;
+ 	spin_unlock(&unix_gc_lock);
+diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
+index ec47f95991a3a..971e74f408a77 100755
+--- a/scripts/dtc/dtx_diff
++++ b/scripts/dtc/dtx_diff
+@@ -56,12 +56,8 @@ Otherwise DTx is treated as a dts source file (aka .dts).
+    or '/include/' to be processed.
+ 
+    If DTx_1 and DTx_2 are in different architectures, then this script
+-   may not work since \${ARCH} is part of the include path.  Two possible
+-   workarounds:
+-
+-      `basename $0` \\
+-          <(ARCH=arch_of_dtx_1 `basename $0` DTx_1) \\
+-          <(ARCH=arch_of_dtx_2 `basename $0` DTx_2)
++   may not work since \${ARCH} is part of the include path.  The following
++   workaround can be used:
+ 
+       `basename $0` ARCH=arch_of_dtx_1 DTx_1 >tmp_dtx_1.dts
+       `basename $0` ARCH=arch_of_dtx_2 DTx_2 >tmp_dtx_2.dts
+diff --git a/sound/core/jack.c b/sound/core/jack.c
+index 5ddf81f091fa9..36cfe1c54109d 100644
+--- a/sound/core/jack.c
++++ b/sound/core/jack.c
+@@ -68,10 +68,13 @@ static int snd_jack_dev_free(struct snd_device *device)
+ 	struct snd_card *card = device->card;
+ 	struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
+ 
++	down_write(&card->controls_rwsem);
+ 	list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
+ 		list_del_init(&jack_kctl->list);
+ 		snd_ctl_remove(card, jack_kctl->kctl);
+ 	}
++	up_write(&card->controls_rwsem);
++
+ 	if (jack->private_free)
+ 		jack->private_free(jack);
+ 
+diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
+index 0ce3f42721c4d..440c16e0d0713 100644
+--- a/sound/core/oss/pcm_oss.c
++++ b/sound/core/oss/pcm_oss.c
+@@ -2122,7 +2122,7 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
+ 	int err, cmd;
+ 
+ #ifdef OSS_DEBUG
+-	pcm_dbg(substream->pcm, "pcm_oss: trigger = 0x%x\n", trigger);
++	pr_debug("pcm_oss: trigger = 0x%x\n", trigger);
+ #endif
+ 	
+ 	psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
+diff --git a/sound/core/pcm.c b/sound/core/pcm.c
+index cdff5f9764808..6ae28dcd79945 100644
+--- a/sound/core/pcm.c
++++ b/sound/core/pcm.c
+@@ -857,7 +857,11 @@ EXPORT_SYMBOL(snd_pcm_new_internal);
+ static void free_chmap(struct snd_pcm_str *pstr)
+ {
+ 	if (pstr->chmap_kctl) {
+-		snd_ctl_remove(pstr->pcm->card, pstr->chmap_kctl);
++		struct snd_card *card = pstr->pcm->card;
++
++		down_write(&card->controls_rwsem);
++		snd_ctl_remove(card, pstr->chmap_kctl);
++		up_write(&card->controls_rwsem);
+ 		pstr->chmap_kctl = NULL;
+ 	}
+ }
+diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
+index ea1aa07962761..b923059a22276 100644
+--- a/sound/core/seq/seq_queue.c
++++ b/sound/core/seq/seq_queue.c
+@@ -257,12 +257,15 @@ struct snd_seq_queue *snd_seq_queue_find_name(char *name)
+ 
+ /* -------------------------------------------------------- */
+ 
++#define MAX_CELL_PROCESSES_IN_QUEUE	1000
++
+ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
+ {
+ 	unsigned long flags;
+ 	struct snd_seq_event_cell *cell;
+ 	snd_seq_tick_time_t cur_tick;
+ 	snd_seq_real_time_t cur_time;
++	int processed = 0;
+ 
+ 	if (q == NULL)
+ 		return;
+@@ -285,6 +288,8 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
+ 		if (!cell)
+ 			break;
+ 		snd_seq_dispatch_event(cell, atomic, hop);
++		if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE)
++			goto out; /* the rest processed at the next batch */
+ 	}
+ 
+ 	/* Process time queue... */
+@@ -294,14 +299,19 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
+ 		if (!cell)
+ 			break;
+ 		snd_seq_dispatch_event(cell, atomic, hop);
++		if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE)
++			goto out; /* the rest processed at the next batch */
+ 	}
+ 
++ out:
+ 	/* free lock */
+ 	spin_lock_irqsave(&q->check_lock, flags);
+ 	if (q->check_again) {
+ 		q->check_again = 0;
+-		spin_unlock_irqrestore(&q->check_lock, flags);
+-		goto __again;
++		if (processed < MAX_CELL_PROCESSES_IN_QUEUE) {
++			spin_unlock_irqrestore(&q->check_lock, flags);
++			goto __again;
++		}
+ 	}
+ 	q->check_blocked = 0;
+ 	spin_unlock_irqrestore(&q->check_lock, flags);
+diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
+index 4e67614f15f8e..8976da3e1e288 100644
+--- a/sound/pci/hda/hda_codec.c
++++ b/sound/pci/hda/hda_codec.c
+@@ -1608,8 +1608,11 @@ void snd_hda_ctls_clear(struct hda_codec *codec)
+ {
+ 	int i;
+ 	struct hda_nid_item *items = codec->mixers.list;
++
++	down_write(&codec->card->controls_rwsem);
+ 	for (i = 0; i < codec->mixers.used; i++)
+ 		snd_ctl_remove(codec->card, items[i].kctl);
++	up_write(&codec->card->controls_rwsem);
+ 	snd_array_free(&codec->mixers);
+ 	snd_array_free(&codec->nids);
+ }
+diff --git a/sound/soc/mediatek/mt8173/mt8173-max98090.c b/sound/soc/mediatek/mt8173/mt8173-max98090.c
+index 5524a2c727ec7..cab30cb48366d 100644
+--- a/sound/soc/mediatek/mt8173/mt8173-max98090.c
++++ b/sound/soc/mediatek/mt8173/mt8173-max98090.c
+@@ -183,6 +183,9 @@ static int mt8173_max98090_dev_probe(struct platform_device *pdev)
+ 	if (ret)
+ 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+ 			__func__, ret);
++
++	of_node_put(codec_node);
++	of_node_put(platform_node);
+ 	return ret;
+ }
+ 
+diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c
+index 467f7049a2886..52fdd766ee82c 100644
+--- a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c
++++ b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5514.c
+@@ -228,6 +228,8 @@ static int mt8173_rt5650_rt5514_dev_probe(struct platform_device *pdev)
+ 	if (ret)
+ 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+ 			__func__, ret);
++
++	of_node_put(platform_node);
+ 	return ret;
+ }
+ 
+diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
+index 1b8b2a7788450..5d75b04f074fe 100644
+--- a/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
++++ b/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
+@@ -285,6 +285,8 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
+ 	if (ret)
+ 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+ 			__func__, ret);
++
++	of_node_put(platform_node);
+ 	return ret;
+ }
+ 
+diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650.c b/sound/soc/mediatek/mt8173/mt8173-rt5650.c
+index ba65f4157a7e0..d02a90201b13b 100644
+--- a/sound/soc/mediatek/mt8173/mt8173-rt5650.c
++++ b/sound/soc/mediatek/mt8173/mt8173-rt5650.c
+@@ -317,6 +317,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
+ 	if (ret)
+ 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
+ 			__func__, ret);
++
++	of_node_put(platform_node);
+ 	return ret;
+ }
+ 
+diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c
+index 3e408158625db..72014dea75422 100644
+--- a/sound/soc/samsung/idma.c
++++ b/sound/soc/samsung/idma.c
+@@ -369,6 +369,8 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream)
+ 	buf->addr = idma.lp_tx_addr;
+ 	buf->bytes = idma_hardware.buffer_bytes_max;
+ 	buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes);
++	if (!buf->area)
++		return -ENOMEM;
+ 
+ 	return 0;
+ }
+diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
+index db859b595dba1..d9b7001227e3c 100644
+--- a/virt/kvm/kvm_main.c
++++ b/virt/kvm/kvm_main.c
+@@ -1513,15 +1513,24 @@ static bool vma_is_valid(struct vm_area_struct *vma, bool write_fault)
+ 	return true;
+ }
+ 
++static int kvm_try_get_pfn(kvm_pfn_t pfn)
++{
++	if (kvm_is_reserved_pfn(pfn))
++		return 1;
++	return get_page_unless_zero(pfn_to_page(pfn));
++}
++
+ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
+ 			       unsigned long addr, bool *async,
+ 			       bool write_fault, bool *writable,
+ 			       kvm_pfn_t *p_pfn)
+ {
+-	unsigned long pfn;
++	kvm_pfn_t pfn;
++	pte_t *ptep;
++	spinlock_t *ptl;
+ 	int r;
+ 
+-	r = follow_pfn(vma, addr, &pfn);
++	r = follow_pte_pmd(vma->vm_mm, addr, &ptep, NULL, &ptl);
+ 	if (r) {
+ 		/*
+ 		 * get_user_pages fails for VM_IO and VM_PFNMAP vmas and does
+@@ -1536,14 +1545,19 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
+ 		if (r)
+ 			return r;
+ 
+-		r = follow_pfn(vma, addr, &pfn);
++		r = follow_pte_pmd(vma->vm_mm, addr, &ptep, NULL, &ptl);
+ 		if (r)
+ 			return r;
++	}
+ 
++	if (write_fault && !pte_write(*ptep)) {
++		pfn = KVM_PFN_ERR_RO_FAULT;
++		goto out;
+ 	}
+ 
+ 	if (writable)
+-		*writable = true;
++		*writable = pte_write(*ptep);
++	pfn = pte_pfn(*ptep);
+ 
+ 	/*
+ 	 * Get a reference here because callers of *hva_to_pfn* and
+@@ -1555,11 +1569,21 @@ static int hva_to_pfn_remapped(struct vm_area_struct *vma,
+ 	 * Whoever called remap_pfn_range is also going to call e.g.
+ 	 * unmap_mapping_range before the underlying pages are freed,
+ 	 * causing a call to our MMU notifier.
++	 *
++	 * Certain IO or PFNMAP mappings can be backed with valid
++	 * struct pages, but be allocated without refcounting e.g.,
++	 * tail pages of non-compound higher order allocations, which
++	 * would then underflow the refcount when the caller does the
++	 * required put_page. Don't allow those pages here.
+ 	 */ 
+-	kvm_get_pfn(pfn);
++	if (!kvm_try_get_pfn(pfn))
++		r = -EFAULT;
+ 
++out:
++	pte_unmap_unlock(ptep, ptl);
+ 	*p_pfn = pfn;
+-	return 0;
++
++	return r;
+ }
+ 
+ /*