lkml.org 
[lkml]   [2011]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/2] USB: HCD: Add driver hooks for (un)?map_urb_for_dma
On Thu, Jan 20, 2011 at 01:41:54PM -0800, Robert Morell wrote:
> Provide optional hooks for the host controller driver to override the
> default DMA mapping and unmapping routines. In general, these shouldn't
> be necessary unless the host controller has special DMA requirements,
> such as alignment contraints. If these are not specified, the
> general usb_hcd_(un)?map_urb_for_dma functions will be used instead.
> Also, pass the status to unmap_urb_for_dma so it can know whether the
> DMA buffer has been overwritten.
>
> Finally, add a flag to be used by these implementations if they
> allocated a temporary buffer so it can be freed properly when unmapping.
>
> Signed-off-by: Robert Morell <rmorell@nvidia.com>

I'd like to get an ACK from Alan before applying this one, and ideally
also from David and Sarah as they know the HCD code also.

Anyone?

thanks,

greg k-h


\
 
 \ /
  Last update: 2011-01-23 09:21    [W:0.153 / U:21.780 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site