[PATCH -next] pwm: img: Fix PM reference leak in img_pwm_enable()

From: Zou Wei
Date: Tue May 11 2021 - 23:40:29 EST


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@xxxxxxxxxx>
Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx>
---
drivers/pwm/pwm-img.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c
index cc37054..11b16ec 100644
--- a/drivers/pwm/pwm-img.c
+++ b/drivers/pwm/pwm-img.c
@@ -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;

--
2.6.2