diff mbox

[v2,1/2] adv7180: fix querystd() method for no input signal

Message ID 201304120206.46577.sergei.shtylyov@cogentembedded.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sergei Shtylyov April 11, 2013, 10:06 p.m. UTC 
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>

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>

---
Changes since original posting:
- fixed the driver name in the subject.

 drivers/media/i2c/adv7180.c |    4 ++++
 1 file changed, 4 insertions(+)

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diff mbox

Patch

Index: linux/drivers/media/i2c/adv7180.c
===================================================================
--- linux.orig/drivers/media/i2c/adv7180.c
+++ linux/drivers/media/i2c/adv7180.c
@@ -135,6 +135,10 @@  struct adv7180_state {
 
 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;