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pwm: img: Fix PM reference leak in img_pwm_enable() 

[ Upstream commit fde25294dfd8e36e4e30b693c27a86232864002a ]

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zou Wei 2021-05-12 11:57:17 +08:00 committed by Greg Kroah-Hartman
parent 9eb5142d3f
commit f8ba40611b
1 changed files with 1 additions and 1 deletions
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2
drivers/pwm/pwm-img.c
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@ -156,7 +156,7 @@ static int img_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
struct img_pwm_chip *pwm_chip = to_img_pwm_chip(chip);
int ret;
ret = pm_runtime_get_sync(chip->dev);
ret = pm_runtime_resume_and_get(chip->dev);
if (ret < 0)
return ret;