From: Duc Nguyen <duc.nguyen.ub@xxxxxxxxxxx>
We have special code if duty_ns is 0. But if non-zero is given, then the
calculation should not result in zero duty.
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 754440194650..bb51156e4bda 100644
--- a/drivers/pwm/pwm-renesas-tpu.c
+++ b/drivers/pwm/pwm-renesas-tpu.c
@@ -275,7 +275,7 @@ static int tpu_pwm_config(struct pwm_chip *chip, struct pwm_device *_pwm,
if (duty_ns) {
duty = clk_rate / prescalers[prescaler]
/ (NSEC_PER_SEC / duty_ns);
- if (duty > period)
+ if (duty > period || duty == 0)
return -EINVAL;
} else {
duty = 0;
--
2.30.2
