diff options
Diffstat (limited to 'drivers/pwm/pwm-stm32.c')
| -rw-r--r-- | drivers/pwm/pwm-stm32.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index 9430b4cd383f..c5f51a33ee1b 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -536,6 +536,7 @@ static int stm32_pwm_probe_breakinputs(struct stm32_pwm *priv, struct device_node *np) { int nb, ret, array_size; + unsigned int i; nb = of_property_count_elems_of_size(np, "st,breakinput", sizeof(struct stm32_breakinput)); @@ -557,6 +558,13 @@ static int stm32_pwm_probe_breakinputs(struct stm32_pwm *priv, if (ret) return ret; + for (i = 0; i < priv->num_breakinputs; i++) { + if (priv->breakinputs[i].index > 1 || + priv->breakinputs[i].level > 1 || + priv->breakinputs[i].filter > 15) + return -EINVAL; + } + return stm32_pwm_apply_breakinputs(priv); } |