[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>
diff --git a/drivers/media/i2c/saa7115.c b/drivers/media/i2c/saa7115.c
index 90c43f3..7fd766e 100644
--- a/drivers/media/i2c/saa7115.c
+++ b/drivers/media/i2c/saa7115.c
@@ -1428,6 +1428,7 @@
*std &= V4L2_STD_SECAM;
break;
default:
+ *std = V4L2_STD_UNKNOWN;
/* Can't detect anything */
break;
}
@@ -1436,8 +1437,10 @@
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;