diff options
Diffstat (limited to 'drivers/pwm/pwm-lpc32xx.c')
| -rw-r--r-- | drivers/pwm/pwm-lpc32xx.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c index 294a68f82558..4d470c1a406a 100644 --- a/drivers/pwm/pwm-lpc32xx.c +++ b/drivers/pwm/pwm-lpc32xx.c @@ -41,9 +41,9 @@ static int lpc32xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, /* The highest acceptable divisor is 256, which is represented by 0 */ period_cycles = div64_u64(c * period_ns, (unsigned long long)NSEC_PER_SEC * 256); - if (!period_cycles) - period_cycles = 1; - if (period_cycles > 255) + if (!period_cycles || period_cycles > 256) + return -ERANGE; + if (period_cycles == 256) period_cycles = 0; /* Compute 256 x #duty/period value and care for corner cases */ |