From 0e1614ac84f1719d87bed577963bb8140d0c9ce8 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 1 Nov 2016 11:46:39 +0100 Subject: [PATCH] pwm: Fix device reference leak Make sure to drop the reference to the parent device taken by class_find_device() after "unexporting" any children when deregistering a PWM chip. Fixes: 0733424c9ba9 ("pwm: Unexport children before chip removal") Signed-off-by: Johan Hovold Signed-off-by: Thierry Reding --- drivers/pwm/sysfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c index 0296d8178ae2..a813239300c3 100644 --- a/drivers/pwm/sysfs.c +++ b/drivers/pwm/sysfs.c @@ -425,6 +425,8 @@ void pwmchip_sysfs_unexport_children(struct pwm_chip *chip) if (test_bit(PWMF_EXPORTED, &pwm->flags)) pwm_unexport_child(parent, pwm); } + + put_device(parent); } static int __init pwm_sysfs_init(void) -- 2.20.1