From 5c2d0218290afa3c335f38583bf4f8e8adad4c76 Mon Sep 17 00:00:00 2001 From: Arvind Yadav Date: Thu, 22 Jun 2017 12:57:42 +0530 Subject: [PATCH] iommu: arm-smmu: Handle return of iommu_device_register. iommu_device_register returns an error code and, although it currently never fails, we should check its return value anyway. Signed-off-by: Arvind Yadav [will: adjusted to follow arm-smmu.c] Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu-v3.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 0fd09745822f..029fe0cffee7 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2744,6 +2744,10 @@ static int arm_smmu_device_probe(struct platform_device *pdev) iommu_device_set_fwnode(&smmu->iommu, dev->fwnode); ret = iommu_device_register(&smmu->iommu); + if (ret) { + dev_err(dev, "Failed to register iommu\n"); + return ret; + } #ifdef CONFIG_PCI if (pci_bus_type.iommu_ops != &arm_smmu_ops) { -- 2.20.1