Re: [PATCH 3/3] USB: ehci: tegra: Align DMA transfers to 32 bytes

[Greg KH <gregkh-l3A5Bk7waGM@public.gmane.org>]

On Fri, Feb 04, 2011 at 12:14:54PM -0800, Olof Johansson wrote:
> On Fri, Feb 4, 2011 at 11:49 AM, Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org> 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-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> >> ---
> >>  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.

Then why would someone send me a patch for it already?

Still confused,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html