On Wed, Jan 15, 2014 at 10:51:28AM +0000, David Laight wrote:
> From: Sascha 
> > 2014/1/15 David Laight <david.lai...@aculab.com>:
> > > This is a known problem.
> > > A side effect of trying to fix USB ethernet.
> > >
> > > There is a patch lurking to increase the ring size from 64 to 256.
> > 
> > Thanks, but where could I get the patch? I searched a bit but cannot find 
> > it.
> 
> I'm no good at finding patches!
> 
> Edit drivers/usb/host/xhci.h and change the definition of
> TRBS_PER_SEGMENT from 64 to 256.

Probably those:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733907#25
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733826#69

HTH,
Johannes
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