diff --git a/[refs] b/[refs]
index 4f52e2041eda..8a2a467625e9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e76ab829cc2d8b6350a3f01fffb208df4d7d8c1b
+refs/heads/master: b2a1ef473b031b630a26685c91a46b9ae668d35c
diff --git a/trunk/drivers/regulator/core.c b/trunk/drivers/regulator/core.c
index f092588a078c..48385318175a 100644
--- a/trunk/drivers/regulator/core.c
+++ b/trunk/drivers/regulator/core.c
@@ -3217,7 +3217,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
 
 	dev_set_drvdata(&rdev->dev, rdev);
 
-	if (config->ena_gpio) {
+	if (config->ena_gpio && gpio_is_valid(config->ena_gpio)) {
 		ret = gpio_request_one(config->ena_gpio,
 				       GPIOF_DIR_OUT | config->ena_gpio_flags,
 				       rdev_get_name(rdev));