Messages in this thread Patch in this message | | | Date | Fri, 7 Jul 2017 01:11:19 -0500 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH] drm/tegra: sor: add NULL check on of_match_device() return value |
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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/sor.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index a8f5289..ca3d9b1 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2538,6 +2538,10 @@ static int tegra_sor_probe(struct platform_device *pdev) int err; match = of_match_device(tegra_sor_of_match, &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "failed to match device\n"); + return -ENODEV; + } sor = devm_kzalloc(&pdev->dev, sizeof(*sor), GFP_KERNEL); if (!sor) -- 2.5.0
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