Re: video_usercopy() enforces change of VideoText IOCTLs since 2.6.8

[Gerd Knorr]

> I would prefer redefining them with respect
> to the arguments passed to the IOCTLs.

Thats possible as well.

> Nevertheless there is one big disadvantage: The userspace programs 
> have to be recompiled because they of course have to use the same IOCTL 
> definitions. 

You can just keep the old ones and map them, so both old and new ones
will work (and internally only the new ones are used).
video_fix_command() does that for a number of v4l2 ioctls which
initially got a _IO* define with wrong read/write bits.  You can either
just add the videotext ones there or translate them in the drivers right
before calling video_usercopy().

  Gerd

-- 
return -ENOSIG;
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