[PATCH] media: rcar-vin: fix a potential NULL pointer dereference

[Kangjie Lu]

In case of_match_node cannot find a match, the fix returns
-EINVAL to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <k...@umn.edu>
---
 drivers/media/platform/rcar-vin/rcar-core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/platform/rcar-vin/rcar-core.c 
b/drivers/media/platform/rcar-vin/rcar-core.c
index f0719ce24b97..a058e2023ca8 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -266,6 +266,8 @@ static int rvin_group_init(struct rvin_group *group, struct 
rvin_dev *vin)
 
        match = of_match_node(vin->dev->driver->of_match_table,
                              vin->dev->of_node);
+       if (unlikely(!match))
+               return -EINVAL;
 
        strscpy(mdev->driver_name, KBUILD_MODNAME, sizeof(mdev->driver_name));
        strscpy(mdev->model, match->compatible, sizeof(mdev->model));
-- 
2.17.1