pinctrl: imx: Catch no fsl,pins property

Instead of crashing the kernel print an error message when
the fsl,pins property is missing.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/pinctrl/pinctrl-imx.c b/drivers/pinctrl/pinctrl-imx.c
index f1be17f6fcf1..deeb740fa94e 100644
--- a/drivers/pinctrl/pinctrl-imx.c
+++ b/drivers/pinctrl/pinctrl-imx.c
@@ -456,6 +456,11 @@ static int imx_pinctrl_parse_groups(struct device_node *np,
          * do sanity check and calculate pins number
          */
         list = of_get_property(np, "fsl,pins", &size);
+        if (!list) {
+                dev_err(info->dev, "no fsl,pins property in node %s\n", np->full_name);
+                return -EINVAL;
+        }
+
         /* we do not check return since it's safe node passed down */
         if (!size || size % pin_size) {
                 dev_err(info->dev, "Invalid fsl,pins property in node %s\n", np->full_name);