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[media] saa7115: fix querystd 

Return V4L2_STD_UNKNOWN if no signal is detected.

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 10:18:58 -03:00 committed by Mauro Carvalho Chehab
parent 416e87a41d
commit af1f7284da
1 changed files with 4 additions and 1 deletions
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5
drivers/media/i2c/saa7115.c
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@ -1428,6 +1428,7 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
*std &= V4L2_STD_SECAM;
break;
default:
*std = V4L2_STD_UNKNOWN;
/* Can't detect anything */
break;
}
@ -1436,8 +1437,10 @@ static int saa711x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
v4l2_dbg(1, debug, sd, "Status byte 2 (0x1f)=0x%02x\n", reg1f);
/* horizontal/vertical not locked */
if (reg1f & 0x40)
if (reg1f & 0x40) {
*std = V4L2_STD_UNKNOWN;
goto ret;
}
if (reg1f & 0x20)
*std &= V4L2_STD_525_60;