[PATCH] pwm: sun4i: Round delay time up to a nearest jiffy

Roman Beranek roman.beranek at prusa3d.cz
Wed Apr 28 01:19:46 BST 2021


More often than not, a PWM period may span nowhere near as far
as 1 jiffy, yet it still must be waited upon before the channel
is disabled.

Signed-off-by: Roman Beranek <roman.beranek at prusa3d.com>
---
 drivers/pwm/pwm-sun4i.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index ce5c4fc8d..f4b991048 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -285,7 +285,7 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
 	val = (duty & PWM_DTY_MASK) | PWM_PRD(period);
 	sun4i_pwm_writel(sun4i_pwm, val, PWM_CH_PRD(pwm->hwpwm));
 	sun4i_pwm->next_period[pwm->hwpwm] = jiffies +
-		nsecs_to_jiffies(cstate.period + 1000);
+		nsecs_to_jiffies(cstate.period) + 1;
 
 	if (state->polarity != PWM_POLARITY_NORMAL)
 		ctrl &= ~BIT_CH(PWM_ACT_STATE, pwm->hwpwm);
-- 
2.31.1




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