From 7dd8fbbe50c01ead78483bc42f744d115afec96b Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 29 May 2013 10:18:54 -0300 Subject: [PATCH] [media] adv7183: fix querystd If no signal is detected, return V4L2_STD_UNKNOWN. Otherwise AND the standard with the detected standards. Note that the v4l2 core initializes the std with tvnorms before calling the querystd ioctl. Signed-off-by: Hans Verkuil Cc: Scott Jiang Acked-by: Scott Jiang Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/adv7183.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/media/i2c/adv7183.c b/drivers/media/i2c/adv7183.c index 980815d37bb1..6f738d8e3a8f 100644 --- a/drivers/media/i2c/adv7183.c +++ b/drivers/media/i2c/adv7183.c @@ -374,28 +374,28 @@ static int adv7183_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) reg = adv7183_read(sd, ADV7183_STATUS_1); switch ((reg >> 0x4) & 0x7) { case 0: - *std = V4L2_STD_NTSC; + *std &= V4L2_STD_NTSC; break; case 1: - *std = V4L2_STD_NTSC_443; + *std &= V4L2_STD_NTSC_443; break; case 2: - *std = V4L2_STD_PAL_M; + *std &= V4L2_STD_PAL_M; break; case 3: - *std = V4L2_STD_PAL_60; + *std &= V4L2_STD_PAL_60; break; case 4: - *std = V4L2_STD_PAL; + *std &= V4L2_STD_PAL; break; case 5: - *std = V4L2_STD_SECAM; + *std &= V4L2_STD_SECAM; break; case 6: - *std = V4L2_STD_PAL_Nc; + *std &= V4L2_STD_PAL_Nc; break; case 7: - *std = V4L2_STD_SECAM; + *std &= V4L2_STD_SECAM; break; default: *std = V4L2_STD_UNKNOWN; -- 2.34.1