patch for vivi test driver

[Stefan Bader]

Carl Karsten wrote:
> Please include this patch in Hardy's kernel:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f905c442e5b19f75fe4e8ce96f2acffa565f2392
> 
> vivi stands for Virtual Video - emulates a real video device with v4l2 api - it 
>   generates a test pattern.  Because it doesn't rely on hardware, and is 
> typically not used in production, I am sure this patch would not have any side 
> effects.
> 
> I am using vivi to debug some v4l2 code (transcode's v4l2 module:
> http://cvs.exit1.org/cgi-bin/viewcvs.cgi/transcode/import/v4l/import_v4l2.c?view=markup
> and a v4l2 driver for some real hardware to be used in 2 weeks.  All so I can 
> record 100 hours of Python sessions:  http://chipy.org/V4l2forPyCon which will 
> be freely available.
> 
> <quote>
> The goal of the vivi project was to do a bare minimum "stub" V4L2 driver that 
> would produce video output playable with xawtv. ... You can use it as a starting 
> point for any video driver you wish to write.
> </quote>
> http://lwn.net/Articles/203971/
> 
> Thanks,
> 
> Carl K
> 
Picked and applied.