[PATCH] pwm: Use -EINVAL for unsupported polarity

[Thierry Reding <thierry.reding@gmail.com>]

Instead of using a mix of -EOPNOTSUPP and -ENOTSUPP, use the more
standard -EINVAL to signal that the specified polarity value was
invalid.

Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
---
 drivers/pwm/pwm-crc.c     | 2 +-
 drivers/pwm/pwm-iqs620a.c | 2 +-
 drivers/pwm/pwm-rcar.c    | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pwm/pwm-crc.c b/drivers/pwm/pwm-crc.c
index ecfdfac0c2d9..1e2276808b7a 100644
--- a/drivers/pwm/pwm-crc.c
+++ b/drivers/pwm/pwm-crc.c
@@ -64,7 +64,7 @@ static int crc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 	}
 
 	if (state->polarity != PWM_POLARITY_NORMAL)
-		return -EOPNOTSUPP;
+		return -EINVAL;
 
 	if (pwm_is_enabled(pwm) && !state->enabled) {
 		err = regmap_write(crc_pwm->regmap, BACKLIGHT_EN, 0);
diff --git a/drivers/pwm/pwm-iqs620a.c b/drivers/pwm/pwm-iqs620a.c
index 7d33e3646436..5ede8255926e 100644
--- a/drivers/pwm/pwm-iqs620a.c
+++ b/drivers/pwm/pwm-iqs620a.c
@@ -50,7 +50,7 @@ static int iqs620_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 	int ret;
 
 	if (state->polarity != PWM_POLARITY_NORMAL)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	if (state->period < IQS620_PWM_PERIOD_NS)
 		return -EINVAL;
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index 3e23f1e4e1f6..002ab79a7ec2 100644
--- a/drivers/pwm/pwm-rcar.c
+++ b/drivers/pwm/pwm-rcar.c
@@ -168,7 +168,7 @@ static int rcar_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 
 	/* This HW/driver only supports normal polarity */
 	if (state->polarity != PWM_POLARITY_NORMAL)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	if (!state->enabled) {
 		rcar_pwm_disable(rp);
-- 
2.29.2