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[media] v4l2-ioctl: clarify querystd comment 

Improve the querystd comment.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-05-29 10:19:04 -03:00 committed by Mauro Carvalho Chehab
parent 0b1ffb5357
commit 1a2c6866e3
1 changed files with 4 additions and 4 deletions
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8
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1385,10 +1385,10 @@ static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
v4l2_std_id *p = arg;
/*
* If nothing detected, it should return all supported
* standard.
* Drivers just need to mask the std argument, in order
* to remove the standards that don't apply from the mask.
* If no signal is detected, then the driver should return
* V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
* any standards that do not apply removed.
*
* This means that tuners, audio and video decoders can join
* their efforts to improve the standards detection.
*/