Commit 26319445 authored Oct 20, 2016 by Patrick Daly

iommu: arm-smmu: Fix a possible null pointer dereference



generic_device_group() may return NULL on an error case. Check for this.

Change-Id: I33e8e859e99d4f7c4616aeee1da8214497e30625
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>

parent a8a228d6

drivers/iommu/arm-smmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2480,7 +2480,7 @@ static struct iommu_group arm_smmu_device_group(struct device dev)
		else
		group = generic_device_group(dev);

		if (IS_ERR(group))
		if (IS_ERR_OR_NULL(group))
		return group;

		if (dev_is_pci(dev))