[PATCH 1/2] pinctrl: stm32: return proper error code in pin_config_set

[Alexandre Torgue <alexandre.torgue@xxxxxx>]

".pin_config_set" or ".pin_config_group_set" can be called with a
configuration not supported (i.e. PIN_CONFIG_PERSIST_STATE). In this case,
it is more suitable to return -ENOTSUPP instead of -EINVAL.

Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxx>

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index a657cd829ce6..5d9839beaa07 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1084,7 +1084,7 @@ static int stm32_pconf_parse_conf(struct pinctrl_dev *pctldev,
 		ret = stm32_pmx_gpio_set_direction(pctldev, range, pin, false);
 		break;
 	default:
-		ret = -EINVAL;
+		ret = -ENOTSUPP;
 	}
 
 	return ret;
-- 
2.17.1