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Commit 80e0b348 authored by Sudarshan Rajagopalan's avatar Sudarshan Rajagopalan
Browse files

arm64: mm: dma-mapping: Fix possible null dereference 



Check for null pointer before deferencing the dev variable.

Change-Id: I4831defe74e6c3dfd6db16493fca202ca1319513
Signed-off-by: default avatarSudarshan Rajagopalan <sudaraja@codeaurora.org>
parent 13371263

arch/arm64/mm/dma-mapping.c

+2 −1
Original line number Diff line number Diff line
@@ -1241,13 +1241,14 @@ int __depr_arm_iommu_attach_device(struct device *dev, 
{

	int err;

	struct iommu_domain *domain;

	struct iommu_group *group = dev->iommu_group;

	struct iommu_group *group;



	if (!dev || !mapping) {

		pr_err("%s: Error input is NULL\n", __func__);

		return -EINVAL;

	}



	group = dev->iommu_group;

	if (!group) {

		dev_err(dev, "No iommu associated with device\n");

		return -EINVAL;