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

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[ Upstream commit a2fa9242e89f27696515699fe0f0296bf1ac1815 ]

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

Fixes: 4ac4e086fd ("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>
This commit is contained in:
Dinghao Liu 2021-04-12 13:32:02 +08:00 • committed by Greg Kroah-Hartman
commit 57f99e92e2
1 changed files with 1 additions and 0 deletions
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1
drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
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@ -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;
}