[PATCH 1/2] pwm: renesas-tpu: better errno for impossible rates

[Wolfram Sang]

From: Duc Nguyen <duc.nguyen.ub@xxxxxxxxxxx>

ENOTSUP has confused users. EINVAL has been considered clearer. Change
the errno, we were the only ones using ENOTSUP in this subsystem anyhow.

Signed-off-by: Duc Nguyen <duc.nguyen.ub@xxxxxxxxxxx>
[wsa: split and reworded commit message]
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/pwm/pwm-renesas-tpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-renesas-tpu.c b/drivers/pwm/pwm-renesas-tpu.c
index 4381df90a527..754440194650 100644
--- a/drivers/pwm/pwm-renesas-tpu.c
+++ b/drivers/pwm/pwm-renesas-tpu.c
@@ -269,7 +269,7 @@ static int tpu_pwm_config(struct pwm_chip *chip, struct pwm_device *_pwm,
 
 	if (prescaler == ARRAY_SIZE(prescalers) || period == 0) {
 		dev_err(&tpu->pdev->dev, "clock rate mismatch\n");
-		return -ENOTSUPP;
+		return -EINVAL;
 	}
 
 	if (duty_ns) {
-- 
2.30.2