lkml.org 
[lkml]   [2011]   [Feb]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 3/3] USB: ehci: tegra: Align DMA transfers to 32 bytes
From
On Fri, Feb 4, 2011 at 11:49 AM, Greg KH <greg@kroah.com> wrote:
> On Wed, Jan 26, 2011 at 07:06:49PM -0800, Robert Morell wrote:
>> The Tegra2 USB controller doesn't properly deal with misaligned DMA
>> buffers, causing corruption.  This is especially prevalent with USB
>> network adapters, where skbuff alignment is often in the middle of a
>> 4-byte dword.
>>
>> To avoid this, allocate a temporary buffer for the DMA if the provided
>> buffer isn't sufficiently aligned.
>>
>> Signed-off-by: Robert Morell <rmorell@nvidia.com>
>> ---
>>  drivers/usb/host/ehci-tegra.c |   90 +++++++++++++++++++++++++++++++++++++++++
>
> This file doesn't seem to be in any tree that I can find, including my
> own, so I can't apply this patch.
>
> What am I supposed to do with it?

It hasn't been posted for upstream yet, so nothing for you to do. The
driver will be posted for review soon, hopefully in time for .39.


-Olof
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-02-04 21:17    [from the cache]
©2003-2011 Jasper Spaans