[PATCH] pinctrl: renesas: rzg2l: Return -EINVAL if the pin doesn't support PIN_CFG_OEN

[Prabhakar <prabhakar.csengg@xxxxxxxxx>]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Update the rzg2l_pinctrl_pinconf_get() function to return -EINVAL for
PIN_CONFIG_OUTPUT_ENABLE config if the pin doesn't support the PIN_CFG_OEN
configuration.

-EINVAL is a valid error when dumping the pin configurations. Returning
-EOPNOTSUPP for a pin that does not support PIN_CFG_OEN resulted in the
message 'ERROR READING CONFIG SETTING 16' being printed during dumping
pinconf-pins.

For consistency do similar change in rzg2l_pinctrl_pinconf_set() for
PIN_CONFIG_OUTPUT_ENABLE config.

Fixes: a9024a323af2 ("pinctrl: renesas: rzg2l: Clean up and refactor OEN read/write functions")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 632180570b70..3ef20f2fa88e 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -1261,7 +1261,9 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		break;
 
 	case PIN_CONFIG_OUTPUT_ENABLE:
-		if (!pctrl->data->oen_read || !(cfg & PIN_CFG_OEN))
+		if (!(cfg & PIN_CFG_OEN))
+			return -EINVAL;
+		if (!pctrl->data->oen_read)
 			return -EOPNOTSUPP;
 		arg = pctrl->data->oen_read(pctrl, _pin);
 		if (!arg)
@@ -1402,7 +1404,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 
 		case PIN_CONFIG_OUTPUT_ENABLE:
 			arg = pinconf_to_config_argument(_configs[i]);
-			if (!pctrl->data->oen_write || !(cfg & PIN_CFG_OEN))
+			if (!(cfg & PIN_CFG_OEN))
+				return -EINVAL;
+			if (!pctrl->data->oen_write)
 				return -EOPNOTSUPP;
 			ret = pctrl->data->oen_write(pctrl, _pin, !!arg);
 			if (ret)
-- 
2.34.1