[PATCH] pwm: samsung: memory leak bugfix in pwm_samsung_free

[Sangjung Woo]

There is certainly a kind of memory leak since allocated data (i.e.
chip_data) is set NULL before freeing it by calling devm_kfree(). This
patch fixes the memory leak bug by modifying its call order.

Signed-off-by: Sangjung Woo <sangjung.woo@xxxxxxxxxxx>
Reviewed-by: Jonghwa Lee <jonghwa3.lee@xxxxxxxxxxx>
---
 drivers/pwm/pwm-samsung.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
index fcc8b9a..07b2d9d 100644
--- a/drivers/pwm/pwm-samsung.c
+++ b/drivers/pwm/pwm-samsung.c
@@ -224,8 +224,8 @@ static int pwm_samsung_request(struct pwm_chip *chip, struct pwm_device *pwm)
 
 static void pwm_samsung_free(struct pwm_chip *chip, struct pwm_device *pwm)
 {
-	pwm_set_chip_data(pwm, NULL);
 	devm_kfree(chip->dev, pwm_get_chip_data(pwm));
+	pwm_set_chip_data(pwm, NULL);
 }
 
 static int pwm_samsung_enable(struct pwm_chip *chip, struct pwm_device *pwm)
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/