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

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>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Sachin Kamat 2013-08-02 04:58:25 -03:00 committed by Mauro Carvalho Chehab
parent 3dbc9964b9
commit 6a40cbbe47
1 changed files with 7 additions and 6 deletions
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13
drivers/media/platform/exynos4-is/fimc-lite.c
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@ -1504,16 +1504,17 @@ static int fimc_lite_probe(struct platform_device *pdev)
struct resource *res;
int ret;
if (!dev->of_node)
return -ENODEV;
fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
if (!fimc)
return -ENOMEM;
if (dev->of_node) {
of_id = of_match_node(flite_of_match, dev->of_node);
if (of_id)
drv_data = (struct flite_drvdata *)of_id->data;
fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
}
of_id = of_match_node(flite_of_match, dev->of_node);
if (of_id)
drv_data = (struct flite_drvdata *)of_id->data;
fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
if (!drv_data || fimc->index >= drv_data->num_instances ||
fimc->index < 0) {