From: Greg KH <greg@kroah.com>
To: Robert Morell <rmorell@nvidia.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>,
Greg Kroah-Hartman <gregkh@suse.de>,
Benoit Goby <benoit@android.com>,
Alan Stern <stern@rowland.harvard.edu>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Matthew Wilcox <willy@linux.intel.com>,
Ming Lei <tom.leiming@gmail.com>,
Jacob Pan <jacob.jun.pan@intel.com>,
Oliver Neukum <oliver@neukum.org>,
Olof Johansson <olof@lixom.net>,
Erik Gilling <konkers@android.com>,
Colin Cross <ccross@android.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH 3/3] USB: ehci: tegra: Align DMA transfers to 32 bytes
Date: Fri, 4 Feb 2011 11:49:54 -0800 [thread overview]
Message-ID: <20110204194954.GA25180@kroah.com> (raw)
In-Reply-To: <1296097609-32302-4-git-send-email-rmorell@nvidia.com>
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?
confused,
greg k-h
next parent reply other threads:[~2011-02-04 19:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1295559715-14264-1-git-send-email-rmorell@nvidia.com>
[not found] ` <1296097609-32302-4-git-send-email-rmorell@nvidia.com>
2011-02-04 19:49 ` Greg KH [this message]
[not found] ` <20110204194954.GA25180-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2011-02-04 20:14 ` [PATCH 3/3] USB: ehci: tegra: Align DMA transfers to 32 bytes Olof Johansson
[not found] ` <AANLkTinRtch4Pvr3GLz5wZU2xkG3FMJxxzSNAdParA7j-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-02-04 20:16 ` Greg KH
[not found] ` <20110204201616.GA12482-l3A5Bk7waGM@public.gmane.org>
2011-02-04 20:26 ` rmorell-DDmLM1+adcrQT0dZR+AlfA
[not found] ` <20110204202640.GC1744-f3YH7lVHJt/FT5IIyIEb6QC/G2K4zDHf@public.gmane.org>
2011-02-04 20:35 ` Greg KH
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