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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 <u.kleine-koenig@pengutronix.de>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Heiner Kallweit 2023-05-24 21:49:56 +02:00 committed by Thierry Reding
parent 87a2cbf02d
commit bafa23b6c0
1 changed files with 0 additions and 5 deletions
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5
drivers/pwm/pwm-meson.c
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@ -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);