| 1 |
On 10/05/2014 06:52 AM, meino.cramer@×××.de wrote: |
| 2 |
> Hi, |
| 3 |
> |
| 4 |
> while trying to get a mt7601sta (UWN200 WiFi dongle) driver running |
| 5 |
> and working I came accross this in the dmesg output: |
| 6 |
> |
| 7 |
> [ 9.931938] usb 2-1: device v148f p7601 is not supported |
| 8 |
|
| 9 |
This looks to me like it's the real error, not the one below. |
| 10 |
|
| 11 |
> [ 9.931976] usb 2-1: New USB device found, idVendor=148f, idProduct=7601 |
| 12 |
> [ 9.931994] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 |
| 13 |
> [ 10.077532] rtusb init rt2870 ---> |
| 14 |
> [ 10.079338] |
| 15 |
> |
| 16 |
> === pAd = e0c58000, size = 860808 === |
| 17 |
> |
| 18 |
> [ 10.079939] ERROR: 256 KiB atomic DMA coherent pool is too small! |
| 19 |
> Please increase it with coherent_pool= kernel parameter! |
| 20 |
> [ 10.079968] <-- ERROR in Alloc Bulk buffer for HTTxContext! |
| 21 |
> [ 10.079983] ---> RTMPFreeTxRxRingMemory |
| 22 |
> [ 10.080026] <--- RTMPFreeTxRxRingMemory |
| 23 |
> [ 10.080040] ERROR!!! Failed to allocate memory - TxRxRing |
| 24 |
> |
| 25 |
> |
| 26 |
> But |
| 27 |
> |
| 28 |
> cat /proc/cmdline |
| 29 |
> |
| 30 |
> shows: |
| 31 |
> |
| 32 |
> console=tty1 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN,BB-BONE-EMMC-2G,coherent_pool=2M |
| 33 |
> |
| 34 |
> (this is an embedded device, thats why there are the other parameters |
| 35 |
> around...) |
| 36 |
> |
| 37 |
> I do not find any way to set this parameter while compiling the |
| 38 |
> kernel. And setting the kernel parameter seems not to work either... |
| 39 |
> |
| 40 |
> Lost? |
| 41 |
> |
| 42 |
> ...or am I only blind... ? ;) |
| 43 |
> |
| 44 |
> How can I increase the cohorent pool size successfully? |
| 45 |
> |
| 46 |
> Best regards, |
| 47 |
> mcc |
| 48 |
> |
| 49 |
> PS: The driver sources are not included in the kernel and have to be |
| 50 |
> compiled externally/extra... |
| 51 |
> |
| 52 |
> |
| 53 |
> |
Archives