From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Wed, 29 May 2013 13:18:57 +0000 (-0300)
Subject: [media] saa7110: fix querystd
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=416e87a41d8430b8dc0f1e94f925b6deb71debbc;p=openwrt%2Fstaging%2Fblogic.git

[media] saa7110: fix querystd

Return V4L2_STD_UNKNOWN if no signal is detected.
Otherwise AND the standard mask with the detected standards.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/i2c/saa7110.c b/drivers/media/i2c/saa7110.c
index 532105de96f0..ac43e929a1d6 100644
--- a/drivers/media/i2c/saa7110.c
+++ b/drivers/media/i2c/saa7110.c
@@ -202,7 +202,7 @@ static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
 	status = saa7110_read(sd);
 	if (status & 0x40) {
 		v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
-		return decoder->norm;	/* no change*/
+		return V4L2_STD_UNKNOWN;
 	}
 	if ((status & 3) == 0) {
 		saa7110_write(sd, 0x06, 0x83);
@@ -264,7 +264,7 @@ static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
 
 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 {
-	*(v4l2_std_id *)std = determine_norm(sd);
+	*std &= determine_norm(sd);
 	return 0;
 }