[PATCH] pinctrl: make pinctrl_register() return proper error code

[Heiko Stübner]

Am Dienstag, 9. Juni 2015, 13:01:16 schrieb Masahiro Yamada:
> Currently, pinctrl_register() just returns NULL on error, so the
> callers can not know the exact reason of the failure.
> 
> Some of the pinctrl drivers return -EINVAL, some -ENODEV, and some
> -ENOMEM on error of pinctrl_register(), although the error code
> might be different from the real cause of the error.
> 
> This commit reworks pinctrl_register() to return the appropriate
> error code and modifies all of the pinctrl drivers to use IS_ERR()
> for the error checking and PTR_ERR() for getting the error code.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
> ---
> 

for

>  drivers/pinctrl/pinctrl-rockchip.c            |  4 ++--

Acked-by: Heiko Stuebner <heiko at sntech.de>