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media: v4l: ctrls: Add debug messages

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Currently, the v4l2 control code is a bit silent on errors.
Add debug messages on (hopefully) most of the error paths.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Ezequiel Garcia
2019-07-20 07:47:07 -04:00
committed by Mauro Carvalho Chehab
parent d4a6a9537b
commit 173f6eacc8
7 changed files with 127 additions and 39 deletions
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4
drivers/media/platform/omap3isp/ispvideo.c
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@@ -1020,8 +1020,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
ctrls.count = 1;
ctrls.controls = &ctrl;
ret = v4l2_g_ext_ctrls(pipe->external->ctrl_handler, NULL, &ctrls);
ret = v4l2_g_ext_ctrls(pipe->external->ctrl_handler, &video->video,
NULL, &ctrls);
if (ret < 0) {
dev_warn(isp->dev, "no pixel rate control in subdev %s\n",
pipe->external->name);