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authorHans Verkuil <hans.verkuil@cisco.com>2013-05-29 10:19:04 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-06-17 09:45:42 -0300
commit1a2c6866e35058c8808af37659e0f344f7f79381 (patch)
tree2f97fe02015826392b780ce5499c294f418272ab
parent0b1ffb535720c1c8a758dfaef926413e11a4bbce (diff)
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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>
-rw-r--r--drivers/media/v4l2-core/v4l2-ioctl.c8
1 files changed, 4 insertions, 4 deletions
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.
*/
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