From: Hans Verkuil Date: Wed, 29 May 2013 13:19:04 +0000 (-0300) Subject: [media] v4l2-ioctl: clarify querystd comment X-Git-Tag: upstream/snapshot3+hdmi~3461^2~974 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1a2c6866e35058c8808af37659e0f344f7f79381;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git [media] v4l2-ioctl: clarify querystd comment Improve the querystd comment. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 6774543..19e2988 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -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. */