Dmitry Torokhov [off-list ref] writes:

On Tue, Jul 26, 2016 at 02:51:58PM +0000, Wei Yongjun wrote:

quoted

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 <redacted>

Fixes: e649f7ec8c5f ("pinctrl: meson: Use devm_pinctrl_register() for
pinctrl registration")

Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Acked-by: Kevin Hilman <khilman@baylibre.com>