1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 92b1782d0d8..f5acdaa5270 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -371,7 +371,7 @@ EXPORT_SYMBOL_GPL(pwm_free);
  */
 int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
 {
-        if (!pwm || period_ns == 0 || duty_ns > period_ns)
+        if (!pwm || duty_ns < 0 || period_ns <= 0 || duty_ns > period_ns)
                 return -EINVAL;
 
         return pwm->chip->ops->config(pwm->chip, pwm, duty_ns, period_ns);