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media: mt9m111: add streaming check to set_fmt

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Currently set_fmt don't care about the streaming status, so the format
can be changed during streaming. This can lead into wrong behaviours.

Check if the device is already streaming and return -EBUSY to avoid
wrong behaviours.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Michael Grzeschik 2018-11-27 05:02:49 -05:00 • committed by Mauro Carvalho Chehab
commit 3c437901bd
1 changed files with 3 additions and 0 deletions
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3
drivers/media/i2c/mt9m111.c
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@ -563,6 +563,9 @@ static int mt9m111_set_fmt(struct v4l2_subdev *sd,
bool bayer;
int ret;
if (mt9m111->is_streaming)
return -EBUSY;
if (format->pad)
return -EINVAL;