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Only three external drivers consume this via iommu_set_fault_handler() drivers/remoteproc drivers/gpu/drm/msm drivers/infiniband/hw/usnic Remove the use in usnic as the iommu driver logging is good enough these days. Remove generation support from the AMD iommu driver since msm and remoteproc are not used on AMD x86 CPUs. Fail iommu_set_fault_handler() if the underlying iommu driver does not support it. Jason Gunthorpe (3): RDMA/usnic: Remove iommu_set_fault_handler() iommu/amd: Don't call report_iommu_fault() iommu: Allow drivers to say if they use report_iommu_fault() drivers/infiniband/hw/usnic/usnic_uiom.c | 13 ------------- drivers/iommu/amd/iommu.c | 24 ------------------------ drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 + drivers/iommu/arm/arm-smmu/qcom_iommu.c | 1 + drivers/iommu/iommu.c | 6 +++++- drivers/iommu/ipmmu-vmsa.c | 1 + drivers/iommu/mtk_iommu.c | 1 + drivers/iommu/mtk_iommu_v1.c | 1 + drivers/iommu/omap-iommu.c | 1 + drivers/iommu/rockchip-iommu.c | 1 + drivers/iommu/sun50i-iommu.c | 1 + include/linux/iommu.h | 3 +++ 12 files changed, 16 insertions(+), 38 deletions(-) base-commit: 211ddde0823f1442e4ad052a2f30f050145ccada