[gentoo-commits] proj/linux-patches:4.4 commit in: /

[Mike Pagano]

commit:     7d9a8056d89cb172bf638ec581f7429d45e52efe
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Dec 22 14:09:28 2021 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Dec 22 14:09:28 2021 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=7d9a8056

Linux patch 4.4.296

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

 0000_README              |   14 +-
 1295_linux-4.4.296.patch | 1358 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 1367 insertions(+), 5 deletions(-)

diff --git a/0000_README b/0000_README
index e68fc753..2168e76a 100644
--- a/0000_README
+++ b/0000_README
@@ -1203,23 +1203,27 @@ Patch:  1289_linux-4.4.290.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.290
 
-Patch:  1290_linux-4.4.291.patc
+Patch:  1290_linux-4.4.291.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.291
 
-Patch:  1291_linux-4.4.292.patc
+Patch:  1291_linux-4.4.292.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.292
 
-Patch:  1292_linux-4.4.293.patc
+Patch:  1292_linux-4.4.293.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.293
 
-Patch:  1293_linux-4.4.294.patc
+Patch:  1293_linux-4.4.294.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.294
 
-Patch:  1294_linux-4.4.295.patc
+Patch:  1294_linux-4.4.295.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.4.295
+
+Patch:  1295_linux-4.4.296.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.295
 

diff --git a/1295_linux-4.4.296.patch b/1295_linux-4.4.296.patch
new file mode 100644
index 00000000..dea5ca91
--- /dev/null
+++ b/1295_linux-4.4.296.patch
@@ -0,0 +1,1358 @@
+diff --git a/Makefile b/Makefile
+index b2a9f72ab8000..37c12303478e3 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 4
+-SUBLEVEL = 295
++SUBLEVEL = 296
+ EXTRAVERSION =
+ NAME = Blurry Fish Butt
+ 
+diff --git a/arch/arm/mm/copypage-fa.c b/arch/arm/mm/copypage-fa.c
+index d130a5ece5d55..bf24690ec83af 100644
+--- a/arch/arm/mm/copypage-fa.c
++++ b/arch/arm/mm/copypage-fa.c
+@@ -17,26 +17,25 @@
+ /*
+  * Faraday optimised copy_user_page
+  */
+-static void __naked
+-fa_copy_user_page(void *kto, const void *kfrom)
++static void fa_copy_user_page(void *kto, const void *kfrom)
+ {
+-	asm("\
+-	stmfd	sp!, {r4, lr}			@ 2\n\
+-	mov	r2, %0				@ 1\n\
+-1:	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	stmia	r0, {r3, r4, ip, lr}		@ 4\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ 1   clean and invalidate D line\n\
+-	add	r0, r0, #16			@ 1\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	stmia	r0, {r3, r4, ip, lr}		@ 4\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ 1   clean and invalidate D line\n\
+-	add	r0, r0, #16			@ 1\n\
+-	subs	r2, r2, #1			@ 1\n\
++	int tmp;
++
++	asm volatile ("\
++1:	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	stmia	%0, {r3, r4, ip, lr}		@ 4\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
++	add	%0, %0, #16			@ 1\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	stmia	%0, {r3, r4, ip, lr}		@ 4\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ 1   clean and invalidate D line\n\
++	add	%0, %0, #16			@ 1\n\
++	subs	%2, %2, #1			@ 1\n\
+ 	bne	1b				@ 1\n\
+-	mcr	p15, 0, r2, c7, c10, 4		@ 1   drain WB\n\
+-	ldmfd	sp!, {r4, pc}			@ 3"
+-	:
+-	: "I" (PAGE_SIZE / 32));
++	mcr	p15, 0, %2, c7, c10, 4		@ 1   drain WB"
++	: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 32)
++	: "r3", "r4", "ip", "lr");
+ }
+ 
+ void fa_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/arch/arm/mm/copypage-feroceon.c b/arch/arm/mm/copypage-feroceon.c
+index 49ee0c1a72097..cc819732d9b82 100644
+--- a/arch/arm/mm/copypage-feroceon.c
++++ b/arch/arm/mm/copypage-feroceon.c
+@@ -13,58 +13,56 @@
+ #include <linux/init.h>
+ #include <linux/highmem.h>
+ 
+-static void __naked
+-feroceon_copy_user_page(void *kto, const void *kfrom)
++static void feroceon_copy_user_page(void *kto, const void *kfrom)
+ {
+-	asm("\
+-	stmfd	sp!, {r4-r9, lr}		\n\
+-	mov	ip, %2				\n\
+-1:	mov	lr, r1				\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	pld	[lr, #32]			\n\
+-	pld	[lr, #64]			\n\
+-	pld	[lr, #96]			\n\
+-	pld	[lr, #128]			\n\
+-	pld	[lr, #160]			\n\
+-	pld	[lr, #192]			\n\
+-	pld	[lr, #224]			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	ldmia	r1!, {r2 - r9}			\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
+-	stmia	r0, {r2 - r9}			\n\
+-	subs	ip, ip, #(32 * 8)		\n\
+-	mcr	p15, 0, r0, c7, c14, 1		@ clean and invalidate D line\n\
+-	add	r0, r0, #32			\n\
++	int tmp;
++
++	asm volatile ("\
++1:	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	pld	[%1, #0]			\n\
++	pld	[%1, #32]			\n\
++	pld	[%1, #64]			\n\
++	pld	[%1, #96]			\n\
++	pld	[%1, #128]			\n\
++	pld	[%1, #160]			\n\
++	pld	[%1, #192]			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	ldmia	%1!, {r2 - r7, ip, lr}		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
++	stmia	%0, {r2 - r7, ip, lr}		\n\
++	subs	%2, %2, #(32 * 8)		\n\
++	mcr	p15, 0, %0, c7, c14, 1		@ clean and invalidate D line\n\
++	add	%0, %0, #32			\n\
+ 	bne	1b				\n\
+-	mcr	p15, 0, ip, c7, c10, 4		@ drain WB\n\
+-	ldmfd	sp!, {r4-r9, pc}"
+-	:
+-	: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE));
++	mcr	p15, 0, %2, c7, c10, 4		@ drain WB"
++	: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
++	: "2" (PAGE_SIZE)
++	: "r2", "r3", "r4", "r5", "r6", "r7", "ip", "lr");
+ }
+ 
+ void feroceon_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c
+index 1267e64133b92..db624170854a0 100644
+--- a/arch/arm/mm/copypage-v4mc.c
++++ b/arch/arm/mm/copypage-v4mc.c
+@@ -40,12 +40,11 @@ static DEFINE_RAW_SPINLOCK(minicache_lock);
+  * instruction.  If your processor does not supply this, you have to write your
+  * own copy_user_highpage that does the right thing.
+  */
+-static void __naked
+-mc_copy_user_page(void *from, void *to)
++static void mc_copy_user_page(void *from, void *to)
+ {
+-	asm volatile(
+-	"stmfd	sp!, {r4, lr}			@ 2\n\
+-	mov	r4, %2				@ 1\n\
++	int tmp;
++
++	asm volatile ("\
+ 	ldmia	%0!, {r2, r3, ip, lr}		@ 4\n\
+ 1:	mcr	p15, 0, %1, c7, c6, 1		@ 1   invalidate D line\n\
+ 	stmia	%1!, {r2, r3, ip, lr}		@ 4\n\
+@@ -55,13 +54,13 @@ mc_copy_user_page(void *from, void *to)
+ 	mcr	p15, 0, %1, c7, c6, 1		@ 1   invalidate D line\n\
+ 	stmia	%1!, {r2, r3, ip, lr}		@ 4\n\
+ 	ldmia	%0!, {r2, r3, ip, lr}		@ 4\n\
+-	subs	r4, r4, #1			@ 1\n\
++	subs	%2, %2, #1			@ 1\n\
+ 	stmia	%1!, {r2, r3, ip, lr}		@ 4\n\
+ 	ldmneia	%0!, {r2, r3, ip, lr}		@ 4\n\
+-	bne	1b				@ 1\n\
+-	ldmfd	sp!, {r4, pc}			@ 3"
+-	:
+-	: "r" (from), "r" (to), "I" (PAGE_SIZE / 64));
++	bne	1b				@ "
++	: "+&r" (from), "+&r" (to), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 64)
++	: "r2", "r3", "ip", "lr");
+ }
+ 
+ void v4_mc_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/arch/arm/mm/copypage-v4wb.c b/arch/arm/mm/copypage-v4wb.c
+index 067d0fdd630c1..cd3e165afeede 100644
+--- a/arch/arm/mm/copypage-v4wb.c
++++ b/arch/arm/mm/copypage-v4wb.c
+@@ -22,29 +22,28 @@
+  * instruction.  If your processor does not supply this, you have to write your
+  * own copy_user_highpage that does the right thing.
+  */
+-static void __naked
+-v4wb_copy_user_page(void *kto, const void *kfrom)
++static void v4wb_copy_user_page(void *kto, const void *kfrom)
+ {
+-	asm("\
+-	stmfd	sp!, {r4, lr}			@ 2\n\
+-	mov	r2, %2				@ 1\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-1:	mcr	p15, 0, r0, c7, c6, 1		@ 1   invalidate D line\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4+1\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	mcr	p15, 0, r0, c7, c6, 1		@ 1   invalidate D line\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	subs	r2, r2, #1			@ 1\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmneia	r1!, {r3, r4, ip, lr}		@ 4\n\
++	int tmp;
++
++	asm volatile ("\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++1:	mcr	p15, 0, %0, c7, c6, 1		@ 1   invalidate D line\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4+1\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	mcr	p15, 0, %0, c7, c6, 1		@ 1   invalidate D line\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	subs	%2, %2, #1			@ 1\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmneia	%1!, {r3, r4, ip, lr}		@ 4\n\
+ 	bne	1b				@ 1\n\
+-	mcr	p15, 0, r1, c7, c10, 4		@ 1   drain WB\n\
+-	ldmfd	 sp!, {r4, pc}			@ 3"
+-	:
+-	: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64));
++	mcr	p15, 0, %1, c7, c10, 4		@ 1   drain WB"
++	: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 64)
++	: "r3", "r4", "ip", "lr");
+ }
+ 
+ void v4wb_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/arch/arm/mm/copypage-v4wt.c b/arch/arm/mm/copypage-v4wt.c
+index b85c5da2e510e..8614572e1296b 100644
+--- a/arch/arm/mm/copypage-v4wt.c
++++ b/arch/arm/mm/copypage-v4wt.c
+@@ -20,27 +20,26 @@
+  * dirty data in the cache.  However, we do have to ensure that
+  * subsequent reads are up to date.
+  */
+-static void __naked
+-v4wt_copy_user_page(void *kto, const void *kfrom)
++static void v4wt_copy_user_page(void *kto, const void *kfrom)
+ {
+-	asm("\
+-	stmfd	sp!, {r4, lr}			@ 2\n\
+-	mov	r2, %2				@ 1\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-1:	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4+1\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmia	r1!, {r3, r4, ip, lr}		@ 4\n\
+-	subs	r2, r2, #1			@ 1\n\
+-	stmia	r0!, {r3, r4, ip, lr}		@ 4\n\
+-	ldmneia	r1!, {r3, r4, ip, lr}		@ 4\n\
++	int tmp;
++
++	asm volatile ("\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++1:	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4+1\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmia	%1!, {r3, r4, ip, lr}		@ 4\n\
++	subs	%2, %2, #1			@ 1\n\
++	stmia	%0!, {r3, r4, ip, lr}		@ 4\n\
++	ldmneia	%1!, {r3, r4, ip, lr}		@ 4\n\
+ 	bne	1b				@ 1\n\
+-	mcr	p15, 0, r2, c7, c7, 0		@ flush ID cache\n\
+-	ldmfd	sp!, {r4, pc}			@ 3"
+-	:
+-	: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64));
++	mcr	p15, 0, %2, c7, c7, 0		@ flush ID cache"
++	: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 64)
++	: "r3", "r4", "ip", "lr");
+ }
+ 
+ void v4wt_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/arch/arm/mm/copypage-xsc3.c b/arch/arm/mm/copypage-xsc3.c
+index 03a2042aced5f..55cbc3a89d858 100644
+--- a/arch/arm/mm/copypage-xsc3.c
++++ b/arch/arm/mm/copypage-xsc3.c
+@@ -21,53 +21,46 @@
+ 
+ /*
+  * XSC3 optimised copy_user_highpage
+- *  r0 = destination
+- *  r1 = source
+  *
+  * The source page may have some clean entries in the cache already, but we
+  * can safely ignore them - break_cow() will flush them out of the cache
+  * if we eventually end up using our copied page.
+  *
+  */
+-static void __naked
+-xsc3_mc_copy_user_page(void *kto, const void *kfrom)
++static void xsc3_mc_copy_user_page(void *kto, const void *kfrom)
+ {
+-	asm("\
+-	stmfd	sp!, {r4, r5, lr}		\n\
+-	mov	lr, %2				\n\
+-						\n\
+-	pld	[r1, #0]			\n\
+-	pld	[r1, #32]			\n\
+-1:	pld	[r1, #64]			\n\
+-	pld	[r1, #96]			\n\
++	int tmp;
++
++	asm volatile ("\
++	pld	[%1, #0]			\n\
++	pld	[%1, #32]			\n\
++1:	pld	[%1, #64]			\n\
++	pld	[%1, #96]			\n\
+ 						\n\
+-2:	ldrd	r2, [r1], #8			\n\
+-	mov	ip, r0				\n\
+-	ldrd	r4, [r1], #8			\n\
+-	mcr	p15, 0, ip, c7, c6, 1		@ invalidate\n\
+-	strd	r2, [r0], #8			\n\
+-	ldrd	r2, [r1], #8			\n\
+-	strd	r4, [r0], #8			\n\
+-	ldrd	r4, [r1], #8			\n\
+-	strd	r2, [r0], #8			\n\
+-	strd	r4, [r0], #8			\n\
+-	ldrd	r2, [r1], #8			\n\
+-	mov	ip, r0				\n\
+-	ldrd	r4, [r1], #8			\n\
+-	mcr	p15, 0, ip, c7, c6, 1		@ invalidate\n\
+-	strd	r2, [r0], #8			\n\
+-	ldrd	r2, [r1], #8			\n\
+-	subs	lr, lr, #1			\n\
+-	strd	r4, [r0], #8			\n\
+-	ldrd	r4, [r1], #8			\n\
+-	strd	r2, [r0], #8			\n\
+-	strd	r4, [r0], #8			\n\
++2:	ldrd	r2, [%1], #8			\n\
++	ldrd	r4, [%1], #8			\n\
++	mcr	p15, 0, %0, c7, c6, 1		@ invalidate\n\
++	strd	r2, [%0], #8			\n\
++	ldrd	r2, [%1], #8			\n\
++	strd	r4, [%0], #8			\n\
++	ldrd	r4, [%1], #8			\n\
++	strd	r2, [%0], #8			\n\
++	strd	r4, [%0], #8			\n\
++	ldrd	r2, [%1], #8			\n\
++	ldrd	r4, [%1], #8			\n\
++	mcr	p15, 0, %0, c7, c6, 1		@ invalidate\n\
++	strd	r2, [%0], #8			\n\
++	ldrd	r2, [%1], #8			\n\
++	subs	%2, %2, #1			\n\
++	strd	r4, [%0], #8			\n\
++	ldrd	r4, [%1], #8			\n\
++	strd	r2, [%0], #8			\n\
++	strd	r4, [%0], #8			\n\
+ 	bgt	1b				\n\
+-	beq	2b				\n\
+-						\n\
+-	ldmfd	sp!, {r4, r5, pc}"
+-	:
+-	: "r" (kto), "r" (kfrom), "I" (PAGE_SIZE / 64 - 1));
++	beq	2b				"
++	: "+&r" (kto), "+&r" (kfrom), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 64 - 1)
++	: "r2", "r3", "r4", "r5");
+ }
+ 
+ void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
+@@ -85,8 +78,6 @@ void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
+ 
+ /*
+  * XScale optimised clear_user_page
+- *  r0 = destination
+- *  r1 = virtual user address of ultimate destination page
+  */
+ void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
+ {
+diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c
+index 0fb85025344d9..c775d4b7adb08 100644
+--- a/arch/arm/mm/copypage-xscale.c
++++ b/arch/arm/mm/copypage-xscale.c
+@@ -36,52 +36,51 @@ static DEFINE_RAW_SPINLOCK(minicache_lock);
+  * Dcache aliasing issue.  The writes will be forwarded to the write buffer,
+  * and merged as appropriate.
+  */
+-static void __naked
+-mc_copy_user_page(void *from, void *to)
++static void mc_copy_user_page(void *from, void *to)
+ {
++	int tmp;
++
+ 	/*
+ 	 * Strangely enough, best performance is achieved
+ 	 * when prefetching destination as well.  (NP)
+ 	 */
+-	asm volatile(
+-	"stmfd	sp!, {r4, r5, lr}		\n\
+-	mov	lr, %2				\n\
+-	pld	[r0, #0]			\n\
+-	pld	[r0, #32]			\n\
+-	pld	[r1, #0]			\n\
+-	pld	[r1, #32]			\n\
+-1:	pld	[r0, #64]			\n\
+-	pld	[r0, #96]			\n\
+-	pld	[r1, #64]			\n\
+-	pld	[r1, #96]			\n\
+-2:	ldrd	r2, [r0], #8			\n\
+-	ldrd	r4, [r0], #8			\n\
+-	mov	ip, r1				\n\
+-	strd	r2, [r1], #8			\n\
+-	ldrd	r2, [r0], #8			\n\
+-	strd	r4, [r1], #8			\n\
+-	ldrd	r4, [r0], #8			\n\
+-	strd	r2, [r1], #8			\n\
+-	strd	r4, [r1], #8			\n\
++	asm volatile ("\
++	pld	[%0, #0]			\n\
++	pld	[%0, #32]			\n\
++	pld	[%1, #0]			\n\
++	pld	[%1, #32]			\n\
++1:	pld	[%0, #64]			\n\
++	pld	[%0, #96]			\n\
++	pld	[%1, #64]			\n\
++	pld	[%1, #96]			\n\
++2:	ldrd	r2, [%0], #8			\n\
++	ldrd	r4, [%0], #8			\n\
++	mov	ip, %1				\n\
++	strd	r2, [%1], #8			\n\
++	ldrd	r2, [%0], #8			\n\
++	strd	r4, [%1], #8			\n\
++	ldrd	r4, [%0], #8			\n\
++	strd	r2, [%1], #8			\n\
++	strd	r4, [%1], #8			\n\
+ 	mcr	p15, 0, ip, c7, c10, 1		@ clean D line\n\
+-	ldrd	r2, [r0], #8			\n\
++	ldrd	r2, [%0], #8			\n\
+ 	mcr	p15, 0, ip, c7, c6, 1		@ invalidate D line\n\
+-	ldrd	r4, [r0], #8			\n\
+-	mov	ip, r1				\n\
+-	strd	r2, [r1], #8			\n\
+-	ldrd	r2, [r0], #8			\n\
+-	strd	r4, [r1], #8			\n\
+-	ldrd	r4, [r0], #8			\n\
+-	strd	r2, [r1], #8			\n\
+-	strd	r4, [r1], #8			\n\
++	ldrd	r4, [%0], #8			\n\
++	mov	ip, %1				\n\
++	strd	r2, [%1], #8			\n\
++	ldrd	r2, [%0], #8			\n\
++	strd	r4, [%1], #8			\n\
++	ldrd	r4, [%0], #8			\n\
++	strd	r2, [%1], #8			\n\
++	strd	r4, [%1], #8			\n\
+ 	mcr	p15, 0, ip, c7, c10, 1		@ clean D line\n\
+-	subs	lr, lr, #1			\n\
++	subs	%2, %2, #1			\n\
+ 	mcr	p15, 0, ip, c7, c6, 1		@ invalidate D line\n\
+ 	bgt	1b				\n\
+-	beq	2b				\n\
+-	ldmfd	sp!, {r4, r5, pc}		"
+-	:
+-	: "r" (from), "r" (to), "I" (PAGE_SIZE / 64 - 1));
++	beq	2b				"
++	: "+&r" (from), "+&r" (to), "=&r" (tmp)
++	: "2" (PAGE_SIZE / 64 - 1)
++	: "r2", "r3", "r4", "r5", "ip");
+ }
+ 
+ void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
+diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
+index b27917dfdcc05..1e44b7880200d 100644
+--- a/drivers/block/xen-blkfront.c
++++ b/drivers/block/xen-blkfront.c
+@@ -1319,11 +1319,13 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
+ 	unsigned long flags;
+ 	struct blkfront_info *info = (struct blkfront_info *)dev_id;
+ 	int error;
++	unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
+ 
+ 	spin_lock_irqsave(&info->io_lock, flags);
+ 
+ 	if (unlikely(info->connected != BLKIF_STATE_CONNECTED)) {
+ 		spin_unlock_irqrestore(&info->io_lock, flags);
++		xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS);
+ 		return IRQ_HANDLED;
+ 	}
+ 
+@@ -1340,6 +1342,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
+ 		unsigned long id;
+ 		unsigned int op;
+ 
++		eoiflag = 0;
++
+ 		RING_COPY_RESPONSE(&info->ring, i, &bret);
+ 		id   = bret.id;
+ 
+@@ -1444,6 +1448,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
+ 
+ 	spin_unlock_irqrestore(&info->io_lock, flags);
+ 
++	xen_irq_lateeoi(irq, eoiflag);
++
+ 	return IRQ_HANDLED;
+ 
+  err:
+@@ -1451,6 +1457,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
+ 
+ 	spin_unlock_irqrestore(&info->io_lock, flags);
+ 
++	/* No EOI in order to avoid further interrupts. */
++
+ 	pr_alert("%s disabled for further use\n", info->gd->disk_name);
+ 	return IRQ_HANDLED;
+ }
+@@ -1489,8 +1497,8 @@ static int setup_blkring(struct xenbus_device *dev,
+ 	if (err)
+ 		goto fail;
+ 
+-	err = bind_evtchn_to_irqhandler(info->evtchn, blkif_interrupt, 0,
+-					"blkif", info);
++	err = bind_evtchn_to_irqhandler_lateeoi(info->evtchn, blkif_interrupt,
++						0, "blkif", info);
+ 	if (err <= 0) {
+ 		xenbus_dev_fatal(dev, err,
+ 				 "bind_evtchn_to_irqhandler failed");
+diff --git a/drivers/char/agp/parisc-agp.c b/drivers/char/agp/parisc-agp.c
+index 15f2e7025b78e..1d5510cb6db4e 100644
+--- a/drivers/char/agp/parisc-agp.c
++++ b/drivers/char/agp/parisc-agp.c
+@@ -285,7 +285,7 @@ agp_ioc_init(void __iomem *ioc_regs)
+         return 0;
+ }
+ 
+-static int
++static int __init
+ lba_find_capability(int cap)
+ {
+ 	struct _parisc_agp_info *info = &parisc_agp_info;
+@@ -370,7 +370,7 @@ fail:
+ 	return error;
+ }
+ 
+-static int
++static int __init
+ find_quicksilver(struct device *dev, void *data)
+ {
+ 	struct parisc_device **lba = data;
+@@ -382,7 +382,7 @@ find_quicksilver(struct device *dev, void *data)
+ 	return 0;
+ }
+ 
+-static int
++static int __init
+ parisc_agp_init(void)
+ {
+ 	extern struct sba_device *sba_list;
+diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c
+index a9356a3dea926..da8465cf26cb8 100644
+--- a/drivers/hwmon/dell-smm-hwmon.c
++++ b/drivers/hwmon/dell-smm-hwmon.c
+@@ -551,15 +551,18 @@ static const struct file_operations i8k_fops = {
+ 	.unlocked_ioctl	= i8k_ioctl,
+ };
+ 
++static struct proc_dir_entry *entry;
++
+ static void __init i8k_init_procfs(void)
+ {
+ 	/* Register the proc entry */
+-	proc_create("i8k", 0, NULL, &i8k_fops);
++	entry = proc_create("i8k", 0, NULL, &i8k_fops);
+ }
+ 
+ static void __exit i8k_exit_procfs(void)
+ {
+-	remove_proc_entry("i8k", NULL);
++	if (entry)
++		remove_proc_entry("i8k", NULL);
+ }
+ 
+ #else
+diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
+index 9096d17beb5bb..587f1a5a10243 100644
+--- a/drivers/i2c/busses/i2c-rk3x.c
++++ b/drivers/i2c/busses/i2c-rk3x.c
+@@ -325,8 +325,8 @@ static void rk3x_i2c_handle_read(struct rk3x_i2c *i2c, unsigned int ipd)
+ 	if (!(ipd & REG_INT_MBRF))
+ 		return;
+ 
+-	/* ack interrupt */
+-	i2c_writel(i2c, REG_INT_MBRF, REG_IPD);
++	/* ack interrupt (read also produces a spurious START flag, clear it too) */
++	i2c_writel(i2c, REG_INT_MBRF | REG_INT_START, REG_IPD);
+ 
+ 	/* Can only handle a maximum of 32 bytes at a time */
+ 	if (len > 32)
+diff --git a/drivers/input/touchscreen/of_touchscreen.c b/drivers/input/touchscreen/of_touchscreen.c
+index bb6f2fe146672..490f3055aec39 100644
+--- a/drivers/input/touchscreen/of_touchscreen.c
++++ b/drivers/input/touchscreen/of_touchscreen.c
+@@ -75,8 +75,8 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch)
+ 	data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-x",
+ 						input_abs_get_max(input,
+ 								  axis) + 1,
+-						&maximum) |
+-		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
++						&maximum);
++	data_present |= touchscreen_get_prop_u32(dev, "touchscreen-fuzz-x",
+ 						input_abs_get_fuzz(input, axis),
+ 						&fuzz);
+ 	if (data_present)
+@@ -86,8 +86,8 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch)
+ 	data_present = touchscreen_get_prop_u32(dev, "touchscreen-size-y",
+ 						input_abs_get_max(input,
+ 								  axis) + 1,
+-						&maximum) |
+-		       touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
++						&maximum);
++	data_present |= touchscreen_get_prop_u32(dev, "touchscreen-fuzz-y",
+ 						input_abs_get_fuzz(input, axis),
+ 						&fuzz);
+ 	if (data_present)
+@@ -97,11 +97,11 @@ void touchscreen_parse_properties(struct input_dev *input, bool multitouch)
+ 	data_present = touchscreen_get_prop_u32(dev,
+ 						"touchscreen-max-pressure",
+ 						input_abs_get_max(input, axis),
+-						&maximum) |
+-		       touchscreen_get_prop_u32(dev,
+-						"touchscreen-fuzz-pressure",
+-						input_abs_get_fuzz(input, axis),
+-						&fuzz);
++						&maximum);
++	data_present |= touchscreen_get_prop_u32(dev,
++						 "touchscreen-fuzz-pressure",
++						 input_abs_get_fuzz(input, axis),
++						 &fuzz);
+ 	if (data_present)
+ 		touchscreen_set_params(input, axis, maximum, fuzz);
+ }
+diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
+index 9e4d1212f4c16..63f2baed3c8a6 100644
+--- a/drivers/md/persistent-data/dm-btree-remove.c
++++ b/drivers/md/persistent-data/dm-btree-remove.c
+@@ -423,9 +423,9 @@ static int rebalance_children(struct shadow_spine *s,
+ 
+ 		memcpy(n, dm_block_data(child),
+ 		       dm_bm_block_size(dm_tm_get_bm(info->tm)));
+-		dm_tm_unlock(info->tm, child);
+ 
+ 		dm_tm_dec(info->tm, dm_block_location(child));
++		dm_tm_unlock(info->tm, child);
+ 		return 0;
+ 	}
+ 
+diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
+index 94f06c35ad9c3..c76102754c226 100644
+--- a/drivers/net/ethernet/broadcom/bcmsysport.c
++++ b/drivers/net/ethernet/broadcom/bcmsysport.c
+@@ -90,9 +90,13 @@ static inline void tdma_port_write_desc_addr(struct bcm_sysport_priv *priv,
+ 					     struct dma_desc *desc,
+ 					     unsigned int port)
+ {
++	unsigned long desc_flags;
++
+ 	/* Ports are latched, so write upper address first */
++	spin_lock_irqsave(&priv->desc_lock, desc_flags);
+ 	tdma_writel(priv, desc->addr_status_len, TDMA_WRITE_PORT_HI(port));
+ 	tdma_writel(priv, desc->addr_lo, TDMA_WRITE_PORT_LO(port));
++	spin_unlock_irqrestore(&priv->desc_lock, desc_flags);
+ }
+ 
+ /* Ethtool operations */
+@@ -1608,6 +1612,7 @@ static int bcm_sysport_open(struct net_device *dev)
+ 	}
+ 
+ 	/* Initialize both hardware and software ring */
++	spin_lock_init(&priv->desc_lock);
+ 	for (i = 0; i < dev->num_tx_queues; i++) {
+ 		ret = bcm_sysport_init_tx_ring(priv, i);
+ 		if (ret) {
+diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h
+index e668b1ce58280..bb484c7faf679 100644
+--- a/drivers/net/ethernet/broadcom/bcmsysport.h
++++ b/drivers/net/ethernet/broadcom/bcmsysport.h
+@@ -660,6 +660,7 @@ struct bcm_sysport_priv {
+ 	int			wol_irq;
+ 
+ 	/* Transmit rings */
++	spinlock_t		desc_lock;
+ 	struct bcm_sysport_tx_ring tx_rings[TDMA_NUM_RINGS];
+ 
+ 	/* Receive queue */
+diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
+index 519b72c418884..ab080118201df 100644
+--- a/drivers/net/ethernet/intel/igbvf/netdev.c
++++ b/drivers/net/ethernet/intel/igbvf/netdev.c
+@@ -2793,6 +2793,7 @@ static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 	return 0;
+ 
+ err_hw_init:
++	netif_napi_del(&adapter->rx_ring->napi);
+ 	kfree(adapter->tx_ring);
+ 	kfree(adapter->rx_ring);
+ err_sw_init:
+diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
+index 324e2e15092f3..ca3c7a4402a1b 100644
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -609,11 +609,9 @@ static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
+ 	ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
+ 
+ 	if (ret == 0) {
+-		if (sig == OTP_INDICATOR_1)
+-			offset = offset;
+-		else if (sig == OTP_INDICATOR_2)
++		if (sig == OTP_INDICATOR_2)
+ 			offset += 0x100;
+-		else
++		else if (sig != OTP_INDICATOR_1)
+ 			ret = -EINVAL;
+ 		if (!ret)
+ 			ret = lan78xx_read_raw_otp(dev, offset, length, data);
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index 15c73ebe5efca..044478c9adad6 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -189,11 +189,15 @@ void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb)
+ 
+ 	spin_lock_irqsave(&queue->rx_queue.lock, flags);
+ 
+-	__skb_queue_tail(&queue->rx_queue, skb);
+-
+-	queue->rx_queue_len += skb->len;
+-	if (queue->rx_queue_len > queue->rx_queue_max)
++	if (queue->rx_queue_len >= queue->rx_queue_max) {
+ 		netif_tx_stop_queue(netdev_get_tx_queue(queue->vif->dev, queue->id));
++		kfree_skb(skb);
++		queue->vif->dev->stats.rx_dropped++;
++	} else {
++		__skb_queue_tail(&queue->rx_queue, skb);
++
++		queue->rx_queue_len += skb->len;
++	}
+ 
+ 	spin_unlock_irqrestore(&queue->rx_queue.lock, flags);
+ }
+@@ -243,6 +247,7 @@ static void xenvif_rx_queue_drop_expired(struct xenvif_queue *queue)
+ 			break;
+ 		xenvif_rx_dequeue(queue);
+ 		kfree_skb(skb);
++		queue->vif->dev->stats.rx_dropped++;
+ 	}
+ }
+ 
+diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
+index 46b9f379035f5..637d5e894012c 100644
+--- a/drivers/net/xen-netfront.c
++++ b/drivers/net/xen-netfront.c
+@@ -141,6 +141,9 @@ struct netfront_queue {
+ 	struct sk_buff *rx_skbs[NET_RX_RING_SIZE];
+ 	grant_ref_t gref_rx_head;
+ 	grant_ref_t grant_rx_ref[NET_RX_RING_SIZE];
++
++	unsigned int rx_rsp_unconsumed;
++	spinlock_t rx_cons_lock;
+ };
+ 
+ struct netfront_info {
+@@ -365,11 +368,12 @@ static int xennet_open(struct net_device *dev)
+ 	return 0;
+ }
+ 
+-static void xennet_tx_buf_gc(struct netfront_queue *queue)
++static bool xennet_tx_buf_gc(struct netfront_queue *queue)
+ {
+ 	RING_IDX cons, prod;
+ 	unsigned short id;
+ 	struct sk_buff *skb;
++	bool work_done = false;
+ 	const struct device *dev = &queue->info->netdev->dev;
+ 
+ 	BUG_ON(!netif_carrier_ok(queue->info->netdev));
+@@ -386,6 +390,8 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
+ 		for (cons = queue->tx.rsp_cons; cons != prod; cons++) {
+ 			struct xen_netif_tx_response txrsp;
+ 
++			work_done = true;
++
+ 			RING_COPY_RESPONSE(&queue->tx, cons, &txrsp);
+ 			if (txrsp.status == XEN_NETIF_RSP_NULL)
+ 				continue;
+@@ -439,11 +445,13 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
+ 
+ 	xennet_maybe_wake_tx(queue);
+ 
+-	return;
++	return work_done;
+ 
+  err:
+ 	queue->info->broken = true;
+ 	dev_alert(dev, "Disabled for further use\n");
++
++	return work_done;
+ }
+ 
+ struct xennet_gnttab_make_txreq {
+@@ -748,6 +756,16 @@ static int xennet_close(struct net_device *dev)
+ 	return 0;
+ }
+ 
++static void xennet_set_rx_rsp_cons(struct netfront_queue *queue, RING_IDX val)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&queue->rx_cons_lock, flags);
++	queue->rx.rsp_cons = val;
++	queue->rx_rsp_unconsumed = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx);
++	spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
++}
++
+ static void xennet_move_rx_slot(struct netfront_queue *queue, struct sk_buff *skb,
+ 				grant_ref_t ref)
+ {
+@@ -799,7 +817,7 @@ static int xennet_get_extras(struct netfront_queue *queue,
+ 		xennet_move_rx_slot(queue, skb, ref);
+ 	} while (extra.flags & XEN_NETIF_EXTRA_FLAG_MORE);
+ 
+-	queue->rx.rsp_cons = cons;
++	xennet_set_rx_rsp_cons(queue, cons);
+ 	return err;
+ }
+ 
+@@ -879,7 +897,7 @@ next:
+ 	}
+ 
+ 	if (unlikely(err))
+-		queue->rx.rsp_cons = cons + slots;
++		xennet_set_rx_rsp_cons(queue, cons + slots);
+ 
+ 	return err;
+ }
+@@ -933,7 +951,8 @@ static int xennet_fill_frags(struct netfront_queue *queue,
+ 			__pskb_pull_tail(skb, pull_to - skb_headlen(skb));
+ 		}
+ 		if (unlikely(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS)) {
+-			queue->rx.rsp_cons = ++cons + skb_queue_len(list);
++			xennet_set_rx_rsp_cons(queue,
++					       ++cons + skb_queue_len(list));
+ 			kfree_skb(nskb);
+ 			return -ENOENT;
+ 		}
+@@ -946,7 +965,7 @@ static int xennet_fill_frags(struct netfront_queue *queue,
+ 		kfree_skb(nskb);
+ 	}
+ 
+-	queue->rx.rsp_cons = cons;
++	xennet_set_rx_rsp_cons(queue, cons);
+ 
+ 	return 0;
+ }
+@@ -1067,7 +1086,9 @@ err:
+ 
+ 			if (unlikely(xennet_set_skb_gso(skb, gso))) {
+ 				__skb_queue_head(&tmpq, skb);
+-				queue->rx.rsp_cons += skb_queue_len(&tmpq);
++				xennet_set_rx_rsp_cons(queue,
++						       queue->rx.rsp_cons +
++						       skb_queue_len(&tmpq));
+ 				goto err;
+ 			}
+ 		}
+@@ -1091,7 +1112,8 @@ err:
+ 
+ 		__skb_queue_tail(&rxq, skb);
+ 
+-		i = ++queue->rx.rsp_cons;
++		i = queue->rx.rsp_cons + 1;
++		xennet_set_rx_rsp_cons(queue, i);
+ 		work_done++;
+ 	}
+ 
+@@ -1275,40 +1297,79 @@ static int xennet_set_features(struct net_device *dev,
+ 	return 0;
+ }
+ 
+-static irqreturn_t xennet_tx_interrupt(int irq, void *dev_id)
++static bool xennet_handle_tx(struct netfront_queue *queue, unsigned int *eoi)
+ {
+-	struct netfront_queue *queue = dev_id;
+ 	unsigned long flags;
+ 
+-	if (queue->info->broken)
+-		return IRQ_HANDLED;
++	if (unlikely(queue->info->broken))
++		return false;
+ 
+ 	spin_lock_irqsave(&queue->tx_lock, flags);
+-	xennet_tx_buf_gc(queue);
++	if (xennet_tx_buf_gc(queue))
++		*eoi = 0;
+ 	spin_unlock_irqrestore(&queue->tx_lock, flags);
+ 
++	return true;
++}
++
++static irqreturn_t xennet_tx_interrupt(int irq, void *dev_id)
++{
++	unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
++
++	if (likely(xennet_handle_tx(dev_id, &eoiflag)))
++		xen_irq_lateeoi(irq, eoiflag);
++
+ 	return IRQ_HANDLED;
+ }
+ 
+-static irqreturn_t xennet_rx_interrupt(int irq, void *dev_id)
++static bool xennet_handle_rx(struct netfront_queue *queue, unsigned int *eoi)
+ {
+-	struct netfront_queue *queue = dev_id;
+-	struct net_device *dev = queue->info->netdev;
++	unsigned int work_queued;
++	unsigned long flags;
+ 
+-	if (queue->info->broken)
+-		return IRQ_HANDLED;
++	if (unlikely(queue->info->broken))
++		return false;
++
++	spin_lock_irqsave(&queue->rx_cons_lock, flags);
++	work_queued = RING_HAS_UNCONSUMED_RESPONSES(&queue->rx);
++	if (work_queued > queue->rx_rsp_unconsumed) {
++		queue->rx_rsp_unconsumed = work_queued;
++		*eoi = 0;
++	} else if (unlikely(work_queued < queue->rx_rsp_unconsumed)) {
++		const struct device *dev = &queue->info->netdev->dev;
++
++		spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
++		dev_alert(dev, "RX producer index going backwards\n");
++		dev_alert(dev, "Disabled for further use\n");
++		queue->info->broken = true;
++		return false;
++	}
++	spin_unlock_irqrestore(&queue->rx_cons_lock, flags);
+ 
+-	if (likely(netif_carrier_ok(dev) &&
+-		   RING_HAS_UNCONSUMED_RESPONSES(&queue->rx)))
++	if (likely(netif_carrier_ok(queue->info->netdev) && work_queued))
+ 		napi_schedule(&queue->napi);
+ 
++	return true;
++}
++
++static irqreturn_t xennet_rx_interrupt(int irq, void *dev_id)
++{
++	unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
++
++	if (likely(xennet_handle_rx(dev_id, &eoiflag)))
++		xen_irq_lateeoi(irq, eoiflag);
++
+ 	return IRQ_HANDLED;
+ }
+ 
+ static irqreturn_t xennet_interrupt(int irq, void *dev_id)
+ {
+-	xennet_tx_interrupt(irq, dev_id);
+-	xennet_rx_interrupt(irq, dev_id);
++	unsigned int eoiflag = XEN_EOI_FLAG_SPURIOUS;
++
++	if (xennet_handle_tx(dev_id, &eoiflag) &&
++	    xennet_handle_rx(dev_id, &eoiflag))
++		xen_irq_lateeoi(irq, eoiflag);
++
+ 	return IRQ_HANDLED;
+ }
+ 
+@@ -1540,9 +1601,10 @@ static int setup_netfront_single(struct netfront_queue *queue)
+ 	if (err < 0)
+ 		goto fail;
+ 
+-	err = bind_evtchn_to_irqhandler(queue->tx_evtchn,
+-					xennet_interrupt,
+-					0, queue->info->netdev->name, queue);
++	err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn,
++						xennet_interrupt, 0,
++						queue->info->netdev->name,
++						queue);
+ 	if (err < 0)
+ 		goto bind_fail;
+ 	queue->rx_evtchn = queue->tx_evtchn;
+@@ -1570,18 +1632,18 @@ static int setup_netfront_split(struct netfront_queue *queue)
+ 
+ 	snprintf(queue->tx_irq_name, sizeof(queue->tx_irq_name),
+ 		 "%s-tx", queue->name);
+-	err = bind_evtchn_to_irqhandler(queue->tx_evtchn,
+-					xennet_tx_interrupt,
+-					0, queue->tx_irq_name, queue);
++	err = bind_evtchn_to_irqhandler_lateeoi(queue->tx_evtchn,
++						xennet_tx_interrupt, 0,
++						queue->tx_irq_name, queue);
+ 	if (err < 0)
+ 		goto bind_tx_fail;
+ 	queue->tx_irq = err;
+ 
+ 	snprintf(queue->rx_irq_name, sizeof(queue->rx_irq_name),
+ 		 "%s-rx", queue->name);
+-	err = bind_evtchn_to_irqhandler(queue->rx_evtchn,
+-					xennet_rx_interrupt,
+-					0, queue->rx_irq_name, queue);
++	err = bind_evtchn_to_irqhandler_lateeoi(queue->rx_evtchn,
++						xennet_rx_interrupt, 0,
++						queue->rx_irq_name, queue);
+ 	if (err < 0)
+ 		goto bind_rx_fail;
+ 	queue->rx_irq = err;
+@@ -1683,6 +1745,7 @@ static int xennet_init_queue(struct netfront_queue *queue)
+ 
+ 	spin_lock_init(&queue->tx_lock);
+ 	spin_lock_init(&queue->rx_lock);
++	spin_lock_init(&queue->rx_cons_lock);
+ 
+ 	setup_timer(&queue->rx_refill_timer, rx_refill_timeout,
+ 		    (unsigned long)queue);
+diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
+index 534aa676bf551..92e78547b00a5 100644
+--- a/drivers/pci/msi.c
++++ b/drivers/pci/msi.c
+@@ -840,7 +840,7 @@ out_free:
+ 	free_msi_irqs(dev);
+ 
+ out_disable:
+-	pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0);
++	pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_MASKALL | PCI_MSIX_FLAGS_ENABLE, 0);
+ 
+ 	return ret;
+ }
+diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
+index c4f5e5bbb8dce..9397e8ba26469 100644
+--- a/drivers/soc/tegra/fuse/fuse-tegra.c
++++ b/drivers/soc/tegra/fuse/fuse-tegra.c
+@@ -176,7 +176,7 @@ static struct platform_driver tegra_fuse_driver = {
+ };
+ module_platform_driver(tegra_fuse_driver);
+ 
+-bool __init tegra_fuse_read_spare(unsigned int spare)
++u32 __init tegra_fuse_read_spare(unsigned int spare)
+ {
+ 	unsigned int offset = fuse->soc->info->spare + spare * 4;
+ 
+diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h
+index 10c2076d5089a..f368bd5373088 100644
+--- a/drivers/soc/tegra/fuse/fuse.h
++++ b/drivers/soc/tegra/fuse/fuse.h
+@@ -62,7 +62,7 @@ struct tegra_fuse {
+ void tegra_init_revision(void);
+ void tegra_init_apbmisc(void);
+ 
+-bool __init tegra_fuse_read_spare(unsigned int spare);
++u32 __init tegra_fuse_read_spare(unsigned int spare);
+ u32 __init tegra_fuse_read_early(unsigned int offset);
+ 
+ #ifdef CONFIG_ARCH_TEGRA_2x_SOC
+diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
+index e503ad91a25a5..4826a6db87b17 100644
+--- a/drivers/tty/hvc/hvc_xen.c
++++ b/drivers/tty/hvc/hvc_xen.c
+@@ -49,6 +49,8 @@ struct xencons_info {
+ 	struct xenbus_device *xbdev;
+ 	struct xencons_interface *intf;
+ 	unsigned int evtchn;
++	XENCONS_RING_IDX out_cons;
++	unsigned int out_cons_same;
+ 	struct hvc_struct *hvc;
+ 	int irq;
+ 	int vtermno;
+@@ -150,6 +152,8 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
+ 	XENCONS_RING_IDX cons, prod;
+ 	int recv = 0;
+ 	struct xencons_info *xencons = vtermno_to_xencons(vtermno);
++	unsigned int eoiflag = 0;
++
+ 	if (xencons == NULL)
+ 		return -EINVAL;
+ 	intf = xencons->intf;
+@@ -169,7 +173,27 @@ static int domU_read_console(uint32_t vtermno, char *buf, int len)
+ 	mb();			/* read ring before consuming */
+ 	intf->in_cons = cons;
+ 
+-	notify_daemon(xencons);
++	/*
++	 * When to mark interrupt having been spurious:
++	 * - there was no new data to be read, and
++	 * - the backend did not consume some output bytes, and
++	 * - the previous round with no read data didn't see consumed bytes
++	 *   (we might have a race with an interrupt being in flight while
++	 *   updating xencons->out_cons, so account for that by allowing one
++	 *   round without any visible reason)
++	 */
++	if (intf->out_cons != xencons->out_cons) {
++		xencons->out_cons = intf->out_cons;
++		xencons->out_cons_same = 0;
++	}
++	if (recv) {
++		notify_daemon(xencons);
++	} else if (xencons->out_cons_same++ > 1) {
++		eoiflag = XEN_EOI_FLAG_SPURIOUS;
++	}
++
++	xen_irq_lateeoi(xencons->irq, eoiflag);
++
+ 	return recv;
+ }
+ 
+@@ -391,7 +415,7 @@ static int xencons_connect_backend(struct xenbus_device *dev,
+ 	if (ret)
+ 		return ret;
+ 	info->evtchn = evtchn;
+-	irq = bind_evtchn_to_irq(evtchn);
++	irq = bind_interdomain_evtchn_to_irq_lateeoi(dev->otherend_id, evtchn);
+ 	if (irq < 0)
+ 		return irq;
+ 	info->irq = irq;
+@@ -555,7 +579,7 @@ static int __init xen_hvc_init(void)
+ 			return r;
+ 
+ 		info = vtermno_to_xencons(HVC_COOKIE);
+-		info->irq = bind_evtchn_to_irq(info->evtchn);
++		info->irq = bind_evtchn_to_irq_lateeoi(info->evtchn);
+ 	}
+ 	if (info->irq < 0)
+ 		info->irq = 0; /* NO_IRQ */
+diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
+index 1f584d15a3ca4..580ba69f1e4a4 100644
+--- a/drivers/usb/gadget/composite.c
++++ b/drivers/usb/gadget/composite.c
+@@ -1485,14 +1485,14 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ 	u8				endp;
+ 
+ 	if (w_length > USB_COMP_EP0_BUFSIZ) {
+-		if (ctrl->bRequestType == USB_DIR_OUT) {
+-			goto done;
+-		} else {
++		if (ctrl->bRequestType & USB_DIR_IN) {
+ 			/* Cast away the const, we are going to overwrite on purpose. */
+ 			__le16 *temp = (__le16 *)&ctrl->wLength;
+ 
+ 			*temp = cpu_to_le16(USB_COMP_EP0_BUFSIZ);
+ 			w_length = USB_COMP_EP0_BUFSIZ;
++		} else {
++			goto done;
+ 		}
+ 	}
+ 
+diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c
+index f1c5a22704b28..e8818ad973e4b 100644
+--- a/drivers/usb/gadget/legacy/dbgp.c
++++ b/drivers/usb/gadget/legacy/dbgp.c
+@@ -345,14 +345,14 @@ static int dbgp_setup(struct usb_gadget *gadget,
+ 	u16 len = 0;
+ 
+ 	if (length > DBGP_REQ_LEN) {
+-		if (ctrl->bRequestType == USB_DIR_OUT) {
+-			return err;
+-		} else {
++		if (ctrl->bRequestType & USB_DIR_IN) {
+ 			/* Cast away the const, we are going to overwrite on purpose. */
+ 			__le16 *temp = (__le16 *)&ctrl->wLength;
+ 
+ 			*temp = cpu_to_le16(DBGP_REQ_LEN);
+ 			length = DBGP_REQ_LEN;
++		} else {
++			return err;
+ 		}
+ 	}
+ 
+diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
+index af0b34763326d..f2b4fdd1f49d5 100644
+--- a/drivers/usb/gadget/legacy/inode.c
++++ b/drivers/usb/gadget/legacy/inode.c
+@@ -1335,14 +1335,14 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+ 	u16				w_length = le16_to_cpu(ctrl->wLength);
+ 
+ 	if (w_length > RBUF_SIZE) {
+-		if (ctrl->bRequestType == USB_DIR_OUT) {
+-			return value;
+-		} else {
++		if (ctrl->bRequestType & USB_DIR_IN) {
+ 			/* Cast away the const, we are going to overwrite on purpose. */
+ 			__le16 *temp = (__le16 *)&ctrl->wLength;
+ 
+ 			*temp = cpu_to_le16(RBUF_SIZE);
+ 			w_length = RBUF_SIZE;
++		} else {
++			return value;
+ 		}
+ 	}
+ 
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index 502931f658a8e..9479abb9eaaaf 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -1195,6 +1195,14 @@ static const struct usb_device_id option_ids[] = {
+ 	  .driver_info = NCTRL(2) | RSVD(3) },
+ 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1063, 0xff),	/* Telit LN920 (ECM) */
+ 	  .driver_info = NCTRL(0) | RSVD(1) },
++	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1070, 0xff),	/* Telit FN990 (rmnet) */
++	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
++	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1071, 0xff),	/* Telit FN990 (MBIM) */
++	  .driver_info = NCTRL(0) | RSVD(1) },
++	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1072, 0xff),	/* Telit FN990 (RNDIS) */
++	  .driver_info = NCTRL(2) | RSVD(3) },
++	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1073, 0xff),	/* Telit FN990 (ECM) */
++	  .driver_info = NCTRL(0) | RSVD(1) },
+ 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
+ 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
+ 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
+diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
+index ea5cb1ba282fd..5ee62045150c0 100644
+--- a/fs/nfsd/nfs4state.c
++++ b/fs/nfsd/nfs4state.c
+@@ -844,6 +844,11 @@ hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp)
+ 	return 0;
+ }
+ 
++static bool delegation_hashed(struct nfs4_delegation *dp)
++{
++	return !(list_empty(&dp->dl_perfile));
++}
++
+ static bool
+ unhash_delegation_locked(struct nfs4_delegation *dp)
+ {
+@@ -851,7 +856,7 @@ unhash_delegation_locked(struct nfs4_delegation *dp)
+ 
+ 	lockdep_assert_held(&state_lock);
+ 
+-	if (list_empty(&dp->dl_perfile))
++	if (!delegation_hashed(dp))
+ 		return false;
+ 
+ 	dp->dl_stid.sc_type = NFS4_CLOSED_DELEG_STID;
+@@ -3656,7 +3661,7 @@ static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb)
+ 	 * queued for a lease break. Don't queue it again.
+ 	 */
+ 	spin_lock(&state_lock);
+-	if (dp->dl_time == 0) {
++	if (delegation_hashed(dp) && dp->dl_time == 0) {
+ 		dp->dl_time = get_seconds();
+ 		list_add_tail(&dp->dl_recall_lru, &nn->del_recall_lru);
+ 	}
+diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
+index d9837d25dfe06..19fbd6c6283ba 100644
+--- a/kernel/time/timekeeping.c
++++ b/kernel/time/timekeeping.c
+@@ -966,8 +966,7 @@ int do_settimeofday64(const struct timespec64 *ts)
+ 	timekeeping_forward_now(tk);
+ 
+ 	xt = tk_xtime(tk);
+-	ts_delta.tv_sec = ts->tv_sec - xt.tv_sec;
+-	ts_delta.tv_nsec = ts->tv_nsec - xt.tv_nsec;
++	ts_delta = timespec64_sub(*ts, xt);
+ 
+ 	if (timespec64_compare(&tk->wall_to_monotonic, &ts_delta) > 0) {
+ 		ret = -EINVAL;
+diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
+index 4932e9f243a2c..3d49ffe8a34d5 100644
+--- a/net/mac80211/agg-tx.c
++++ b/net/mac80211/agg-tx.c
+@@ -109,7 +109,7 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata,
+ 	mgmt->u.action.u.addba_req.start_seq_num =
+ 					cpu_to_le16(start_seq_num << 4);
+ 
+-	ieee80211_tx_skb(sdata, skb);
++	ieee80211_tx_skb_tid(sdata, skb, tid);
+ }
+ 
+ void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn)
+diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
+index 65cf129eaad33..2f23b7fef8ef7 100644
+--- a/net/netlink/af_netlink.c
++++ b/net/netlink/af_netlink.c
+@@ -1804,6 +1804,11 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
+ 	if (msg->msg_flags&MSG_OOB)
+ 		return -EOPNOTSUPP;
+ 
++	if (len == 0) {
++		pr_warn_once("Zero length message leads to an empty skb\n");
++		return -ENODATA;
++	}
++
+ 	err = scm_send(sock, msg, &scm, true);
+ 	if (err < 0)
+ 		return err;
+diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
+index 00a0f0476a543..4286b900a3066 100644
+--- a/net/nfc/netlink.c
++++ b/net/nfc/netlink.c
+@@ -632,8 +632,10 @@ static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
+ {
+ 	struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+ 
+-	nfc_device_iter_exit(iter);
+-	kfree(iter);
++	if (iter) {
++		nfc_device_iter_exit(iter);
++		kfree(iter);
++	}
+ 
+ 	return 0;
+ }
+diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
+index 5ca4ec2970197..b690b294fc36b 100755
+--- a/scripts/recordmcount.pl
++++ b/scripts/recordmcount.pl
+@@ -248,7 +248,7 @@ if ($arch eq "x86_64") {
+ 
+ } elsif ($arch eq "s390" && $bits == 64) {
+     if ($cc =~ /-DCC_USING_HOTPATCH/) {
+-	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*brcl\\s*0,[0-9a-f]+ <([^\+]*)>\$";
++	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*c0 04 00 00 00 00\\s*(bcrl\\s*0,|jgnop\\s*)[0-9a-f]+ <([^\+]*)>\$";
+ 	$mcount_adjust = 0;
+     } else {
+ 	$mcount_regex = "^\\s*([0-9a-fA-F]+):\\s*R_390_(PC|PLT)32DBL\\s+_mcount\\+0x2\$";