[PATCH 3/3] [media] exynos4-is: Fix potential NULL pointer dereference

[Sachin Kamat <sachin.kamat@linaro.org>]

dev->of_node could be NULL. Hence check for the same and return before
dereferencing it in the subsequent error message.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
---
 drivers/media/platform/exynos4-is/fimc-lite.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c
index 08fbfed..214bde2 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -1513,6 +1513,9 @@ static int fimc_lite_probe(struct platform_device *pdev)
 		if (of_id)
 			drv_data = (struct flite_drvdata *)of_id->data;
 		fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
+	} else {
+		dev_err(dev, "device node not found\n");
+		return -EINVAL;
 	}
 
 	if (!drv_data || fimc->index >= drv_data->num_instances ||
-- 
1.7.9.5