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MLK-24585: media: ov5640: fix state out of sync with sensor real state issue 

Variable streaming is used to track ov5640 working state and control to turn
on/off ov5640. For normal case, streaming will be set to false when user call
STREAMOFF ioctl, but for some special cases, process will be killed at any time
and STREAMOFF ioctl will be ignored in this case. It leads to sensor software
state is out of sync with its real state, so driver force to set streaming to
false when call ov5640_set_power_off(). It will keep software state sync with
sensor real state.

Signed-off-by: Guoniu.zhou <guoniu.zhou@nxp.com>
Reviewed-by: Robby Cai <robby.cai@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Guoniu.zhou 2020-08-28 16:39:45 +08:00
parent f663d68a83
commit 83f2055886
1 changed files with 1 additions and 0 deletions
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drivers/media/i2c/ov5640.c
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@ -2049,6 +2049,7 @@ static void ov5640_set_power_off(struct ov5640_dev *sensor)
ov5640_power(sensor, false);
regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
clk_disable_unprepare(sensor->xclk);
sensor->streaming = false;
}
static int ov5640_set_power(struct ov5640_dev *sensor, bool on)