diff --git a/drivers/pwm/pwm-lp3943.c b/drivers/pwm/pwm-lp3943.c
index 10537e74be28..e42af9007546 100644
--- a/drivers/pwm/pwm-lp3943.c
+++ b/drivers/pwm/pwm-lp3943.c
@@ -38,6 +38,9 @@ lp3943_pwm_request_map(struct lp3943_pwm *lp3943_pwm, int hwpwm)
 	struct lp3943_pwm_map *pwm_map = &lp3943_pwm->pwm_map[hwpwm];
 	int i, offset;
 
+	if (!pdata->pwms[hwpwm])
+		return ERR_PTR(-ENODEV);
+
 	pwm_map->output = pdata->pwms[hwpwm]->output;
 	pwm_map->num_outputs = pdata->pwms[hwpwm]->num_outputs;