[PATCH 4/4] pinctrl: nomadik: Prevent NULL dereference if of_match_device returns NULL

of_match_device() may return NULL.

Signed-off-by: Axel Lin <redacted>
---
 drivers/pinctrl/pinctrl-nomadik.c |   11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index 238060e..40bd1b3 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c

@@ -1863,9 +1863,14 @@ static int __devinit nmk_pinctrl_probe(struct platform_device *pdev)

        if (platid)
                version = platid->driver_data;
-       else if (np)
-               version = (unsigned int)
-                       of_match_device(nmk_pinctrl_match, &pdev->dev)->data;
+       else if (np) {
+               const struct of_device_id *match;
+
+               match = of_match_device(nmk_pinctrl_match, &pdev->dev);
+               if (!match)
+                       return -ENODEV;
+               version = (unsigned int) match->data;
+       }