clk: avoid possible NULL ptr deref

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 66cd832406..d9a1c21ae8 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -179,9 +179,11 @@ struct clk *clk_get(struct device_d *dev, const char *con_id)
 	if (!IS_ERR(clk))
 		return clk;
 
-	clk = of_clk_get_by_name(dev->device_node, con_id);
-		if (!IS_ERR(clk))
-			return clk;
+	if (dev) {
+		clk = of_clk_get_by_name(dev->device_node, con_id);
+			if (!IS_ERR(clk))
+				return clk;
+	}
 
 	return clk_get_sys(dev_id, con_id);
 }