pinctrl: stm32: return proper error code in pin_config_set

".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@st.com>
Link: https://lore.kernel.org/r/20200615125951.28008-2-alexandre.torgue@st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 162535e7c94dd3c508bc68c45bcb3614a67c50ca..cdf6b01d1956f2ebb52b81b05581a44eec6f01bc 100644 (file)
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1085,7 +1085,7 @@ 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;