diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-lpss.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c index 98dc8b80b79d..be4658b42882 100644 --- a/drivers/pwm/pwm-lpss.c +++ b/drivers/pwm/pwm-lpss.c @@ -91,7 +91,7 @@ static int pwm_lpss_config(struct pwm_chip *chip, struct pwm_device *pwm, int duty_ns, int period_ns) { struct pwm_lpss_chip *lpwm = to_lpwm(chip); - u8 on_time_div; + unsigned long long on_time_div; unsigned long c, base_unit_range; unsigned long long base_unit, freq = NSEC_PER_SEC; u32 ctrl; @@ -113,7 +113,9 @@ static int pwm_lpss_config(struct pwm_chip *chip, struct pwm_device *pwm, if (duty_ns <= 0) duty_ns = 1; - on_time_div = 255 - (255 * duty_ns / period_ns); + on_time_div = 255ULL * duty_ns; + do_div(on_time_div, period_ns); + on_time_div = 255ULL - on_time_div; pm_runtime_get_sync(chip->dev); |