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V4L/DVB: tvp7002: fix query_dv_preset 

If no signal or valid format is detected, then VIDIOC_QUERY_DV_PRESET must
return 0 and set the preset to V4L2_DV_INVALID.

This driver returned an error instead.

Also simplified the kernel messages a bit: change v4l2_err to v4l2_dbg (not
detecting a signal/valid format is not an error, so only print this info when
debug == 1) and do not call v4l_fill_dv_preset_info: it's overkill to do this
just for a debug message.

Thanks to Mats Randgaard for bringing this to my attention.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
hifive-unleashed-5.1
Hans Verkuil 2010-05-01 08:23:07 -03:00 committed by Mauro Carvalho Chehab
parent ffb4877ba0
commit cf19cd3d8a
1 changed files with 5 additions and 8 deletions
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13
drivers/media/video/tvp7002.c
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@ -785,7 +785,6 @@ static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
struct v4l2_dv_preset *qpreset)
{
const struct tvp7002_preset_definition *presets = tvp7002_presets;
struct v4l2_dv_enum_preset e_preset;
struct tvp7002 *device;
u8 progressive;
u32 lpfr;
@ -828,20 +827,18 @@ static int tvp7002_query_dv_preset(struct v4l2_subdev *sd,
}
if (index == NUM_PRESETS) {
v4l2_err(sd, "querystd error, lpf = %x, cpl = %x\n",
v4l2_dbg(1, debug, sd, "detection failed: lpf = %x, cpl = %x\n",
lpfr, cpln);
return -EINVAL;
/* Could not detect a signal, so return the 'invalid' preset */
qpreset->preset = V4L2_DV_INVALID;
return 0;
}
if (v4l_fill_dv_preset_info(presets->preset, &e_preset))
return -EINVAL;
/* Set values in found preset */
qpreset->preset = presets->preset;
/* Update lines per frame and clocks per line info */
v4l2_dbg(1, debug, sd, "Current preset: %d %d",
e_preset.width, e_preset.height);
v4l2_dbg(1, debug, sd, "detected preset: %d\n", presets->preset);
return 0;
}