Author: Wei Yongjun <weiyj.lk@gmail.com> It’s not necessary to unregister pin controller device registered with devm_pinctrl_register() and using pinctrl_unregister() leads to a double free. This is detected by Coccinelle semantic patch. Signed-off-by: Wei Yongjun Signed-off-by: Linus Walleij — drivers/pinctrl/pinctrl-pistachio.c | 9 +——– 1 file changed, 1 insertion(+), 8 deletions(-) diff –git a/drivers/pinctrl/pinctrl-pistachio.c b/drivers/pinctrl/pinctrl-pistachio.c index c6d410e..7bad200 …