[lkml]   [2010]   [Feb]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: USB mass storage and ARM cache coherency
Am Dienstag, 2. Februar 2010 15:42:49 schrieb Clemens Ladisch:
> > Or... usb-audio? I should have verified that it is using bulk endpoints
> > (and thus the patch applies to my case).
> > usb-audio probably uses isochronous transfers, thus that would be
> > an obvious reason why the patch didn't work for me.
> snd-usb-audio indeed uses isochronous transfers, but those buffers are
> never mapped into user space. The intermediate vmalloc()ed buffer is,
> however, and there was a bugfix for this recently. Do you have these
> patches in your tree?

Now that I think about it, several video drivers do map it to user space.


 \ /
  Last update: 2010-02-02 15:55    [W:0.106 / U:27.372 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site