pwm: Unexport children before chip removal
Exported pwm channels aren't removed before the pwmchip and are
leaked. This results in invalid sysfs files. This fix removes
all exported pwm channels before chip removal.
Signed-off-by: David Hsu <davidhsu@google.com>
Fixes: 76abbdde2d95 ("pwm: Add sysfs interface")
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 0dbd29e..172ef82 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -339,6 +339,8 @@
unsigned int i;
int ret = 0;
+ pwmchip_sysfs_unexport_children(chip);
+
mutex_lock(&pwm_lock);
for (i = 0; i < chip->npwm; i++) {