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Subject[PATCH] drm/tegra: vic: add NULL check on of_match_device() return value
Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/gpu/drm/tegra/vic.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
index 47cb1aa..7e11825 100644
--- a/drivers/gpu/drm/tegra/vic.c
+++ b/drivers/gpu/drm/tegra/vic.c
@@ -283,6 +283,11 @@ static int vic_probe(struct platform_device *pdev)
int err;

match = of_match_device(vic_match, dev);
+ if (!match) {
+ dev_err(&pdev->dev, "failed to match device\n");
+ return -ENODEV;
+ }
+
vic_config = (struct vic_config *)match->data;

vic = devm_kzalloc(dev, sizeof(*vic), GFP_KERNEL);
--
2.5.0
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