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

[Claudiu Beznea]

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>
---

Changes in v2:
- none, this patch is new

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index a106e087c224..05a33655e6cc 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -1281,7 +1281,7 @@ static int rzg2l_read_oen(struct rzg2l_pinctrl *pctrl, unsigned int _pin)
 	int bit;
 
 	if (!pctrl->data->pin_to_oen_bit)
-		return -EOPNOTSUPP;
+		return -ENOTSUPP;
 
 	bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
 	if (bit < 0)
@@ -1323,7 +1323,7 @@ static int rzg2l_write_oen(struct rzg2l_pinctrl *pctrl, unsigned int _pin, u8 oe
 	u8 val;
 
 	if (!pctrl->data->pin_to_oen_bit)
-		return -EOPNOTSUPP;
+		return -ENOTSUPP;
 
 	bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
 	if (bit < 0)
@@ -1754,7 +1754,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		default:
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 		}
 	}
 
@@ -1837,7 +1837,7 @@ static int rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
 
 		/* Check config matching between to pin  */
 		if (i && prev_config != *config)
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 
 		prev_config = *config;
 	}
-- 
2.43.0