[PATCH 07/18] regulator: test of_regulator_register input before accessing it

[Marco Felsch]

Add simple parameter check to avoid possible NULL pointer dereferences.

Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
---
 drivers/regulator/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a767e383fb..6ea21a4609 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -163,6 +163,9 @@ int of_regulator_register(struct regulator_dev *rd, struct device_node *node)
 	struct regulator_internal *ri;
 	const char *name;
 
+	if (!rd || !node)
+		return -EINVAL;
+
 	rd->boot_on = of_property_read_bool(node, "regulator-boot-on");
 
 	name = of_get_property(node, "regulator-name", NULL);
-- 
2.20.1