RE: [PATCH] musb: Add workqueue for URB giveback

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Hi,
> -----Original Message-----
> From: Laurent Pinchart [mailto:laurent.pinchart@xxxxxxxxxxxxxxxx]
> Sent: Friday, February 26, 2010 5:04 PM
> To: Gupta, Ajay Kumar
> Cc: linux-usb@xxxxxxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx;
> stern@xxxxxxxxxxxxxxxxxxx; oliver@xxxxxxxxxx
> Subject: Re: [PATCH] musb: Add workqueue for URB giveback
> 
> Hi Ajay,
> 
> On Friday 26 February 2010 11:39:06 Ajay Kumar Gupta wrote:
> > Current musb host driver does the giveback of completed urb first and
> > then start the next request. This is significantly affecting the
> streaming
> > from an USB camera wherein we observe huge delay between the two IN
> tokens
> > from musb host. This is due to the fact that UVC driver is doing
> decoding
> > and further processing in giveback context.
> 
> I was thinking about adding a workqueue to the UVC driver for URB
> processing.
> If you beat my by writing a patch before I find time to do so, I won't
> complain ;-)

Sure, I will see when I can post a RFC/PATCH for it. Probably after
two weeks.

Regards,
Ajay
> 
> --
> Regards,
> 
> Laurent Pinchart
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