[media] adv7180: fix querystd() method for no input signal
When the input signal is not detected querystd() method should return
V4L2_STD_UNKNOWN instead of previously latched analog video standard.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 34f39d3..afd561a 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -135,6 +135,10 @@
static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
{
+ /* in case V4L2_IN_ST_NO_SIGNAL */
+ if (!(status1 & ADV7180_STATUS1_IN_LOCK))
+ return V4L2_STD_UNKNOWN;
+
switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
case ADV7180_STATUS1_AUTOD_NTSM_M_J:
return V4L2_STD_NTSC;
