pwm: img: Call pm_runtime_put() in pm_runtime_get_sync() failed case

Even in failed case of pm_runtime_get_sync(), the usage_count is
incremented. In order to keep the usage_count with correct value call
appropriate pm_runtime_put().

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c
index c9e57bd..599a0f6 100644 (file)
--- a/drivers/pwm/pwm-img.c
+++ b/drivers/pwm/pwm-img.c
@@ -129,8 +129,10 @@ static int img_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
        duty = DIV_ROUND_UP(timebase * duty_ns, period_ns);
 
        ret = pm_runtime_get_sync(chip->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_autosuspend(chip->dev);
                return ret;
+       }
 
        val = img_pwm_readl(pwm_chip, PWM_CTRL_CFG);
        val &= ~(PWM_CTRL_CFG_DIV_MASK << PWM_CTRL_CFG_DIV_SHIFT(pwm->hwpwm));
@@ -331,8 +333,10 @@ static int img_pwm_remove(struct platform_device *pdev)
        int ret;
 
        ret = pm_runtime_get_sync(&pdev->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put(&pdev->dev);
                return ret;
+       }
 
        for (i = 0; i < pwm_chip->chip.npwm; i++) {
                val = img_pwm_readl(pwm_chip, PWM_CTRL_CFG);