Commit a310e971 authored Apr 12, 2021 by Dinghao Liu Committed by Greg Kroah-Hartman May 22, 2021

iio: proximity: pulsedlight: Fix rumtime PM imbalance on error



[ Upstream commit a2fa9242e89f27696515699fe0f0296bf1ac1815 ]

When lidar_write_control() fails, a pairing PM usage counter
decrement is needed to keep the counter balanced.

Fixes: 4ac4e086 ("iio: pulsedlight-lidar-lite: add runtime PM")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210412053204.4889-1-dinghao.liu@zju.edu.cn


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent c6f40bc6

drivers/iio/proximity/pulsedlight-lidar-lite-v2.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,7 @@ static int lidar_get_measurement(struct lidar_data data, u16 reg)
		ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
		if (ret < 0) {
		dev_err(&client->dev, "cannot send start measurement command");
		pm_runtime_put_noidle(&client->dev);
		return ret;
		}