pwm: meson: remove not needed check in meson_pwm_calc

period >= duty implies that cnt >= duty_cnt. We verified before that cnt <= 0xffff, therefore we can omit the check here. Suggested-by: Uwe Kleine-König <[email protected]> Signed-off-by: Heiner Kallweit <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
niw · Jun 23, 2023 · bafa23b · bafa23b
1 parent 87a2cbf
commit bafa23b
Showing 1 changed file with 0 additions and 5 deletions.
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
@@ -204,12 +204,7 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,
 		channel->hi = 0;
 		channel->lo = cnt;
 	} else {
-		/* Then check is we can have the duty with the same pre_div */
 		duty_cnt = div64_u64(fin_freq * duty, NSEC_PER_SEC * (pre_div + 1));
-		if (duty_cnt > 0xffff) {
-			dev_err(meson->chip.dev, "unable to get duty cycle\n");
-			return -EINVAL;
-		}
 
 		dev_dbg(meson->chip.dev, "duty=%llu pre_div=%u duty_cnt=%u\n",
 			duty, pre_div, duty_cnt);