[PATCH v5 RESEND 3/6] pwm: meson: remove not needed check in meson_pwm_calc
Heiner Kallweit
hkallweit1 at gmail.com
Wed May 24 12:49:56 PDT 2023
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 <u.kleine-koenig at pengutronix.de>
Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
---
drivers/pwm/pwm-meson.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 33107204a..aad4a0ed3 100644
--- 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);
--
2.40.1
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