1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 17018f3c066e..908b67c847cd 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -235,6 +235,9 @@ static inline int pwm_config(struct pwm_device *pwm, int duty_ns,
         if (!pwm)
                 return -EINVAL;
 
+        if (duty_ns < 0 || period_ns < 0)
+                return -EINVAL;
+
         pwm_get_state(pwm, &state);
         if (state.duty_cycle == duty_ns && state.period == period_ns)
                 return 0;