Re: [PATCH v2 1/2] pinctrl: renesas: rzg2l: Use -ENOTSUPP instead of -EOPNOTSUPP

[Bartosz Golaszewski]

On Fri, 15 May 2026 14:40:07 +0200, Claudiu Beznea
<claudiu.beznea@xxxxxxxxxx> said:
> From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
>
> The pinctrl and GPIO core code make exceptions for the -ENOTSUPP error
> code. One such example is gpio_set_config_with_argument_optional(), which
> returns success when gpio_set_config_with_argument() returns -ENOTSUPP, but
> reports failure for all other error codes.
>
> Returning -EOPNOTSUPP from the pinctrl driver on the unsupported pinctrl
> operation may lead to boot failures when pinctrl drivers implements
> struct gpio_chip::set_config, the system uses GPIO hogs, and the
> struct gpio_chip::set_config implementation returns -EOPNOTSUPP for the
> unsupported operations.
>
> Return -ENOTSUPP for the unsupported pinctrl operation.
>
> Fixes: 560c633d378a ("pinctrl: renesas: rzg2l: Drop oen_read and oen_write callbacks")
> Fixes: c4c4637eb57f ("pinctrl: renesas: Add RZ/G2L pin and gpio controller driver")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
> ---

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>