From f5325094379158e6b876ea0010c807bf7890ec8f Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 22 Jan 2010 17:44:35 +0100 Subject: [PATCH] x86/amd-iommu: Fix IOMMU-API initialization for iommu=pt This patch moves the initialization of the iommu-api out of the dma-ops initialization code. This ensures that the iommu-api is initialized even with iommu=pt. Cc: stable@kernel.org Signed-off-by: Joerg Roedel --- arch/x86/include/asm/amd_iommu_proto.h | 1 + arch/x86/kernel/amd_iommu.c | 8 ++++++-- arch/x86/kernel/amd_iommu_init.c | 3 +++ 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/amd_iommu_proto.h b/arch/x86/include/asm/amd_iommu_proto.h index 4d817f9..d2544f1 100644 --- a/arch/x86/include/asm/amd_iommu_proto.h +++ b/arch/x86/include/asm/amd_iommu_proto.h @@ -31,6 +31,7 @@ extern void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu); extern int amd_iommu_init_devices(void); extern void amd_iommu_uninit_devices(void); extern void amd_iommu_init_notifier(void); +extern void amd_iommu_init_api(void); #ifndef CONFIG_AMD_IOMMU_STATS static inline void amd_iommu_stats_init(void) { } diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 4478a48..751ce73 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -2221,6 +2221,12 @@ static struct dma_map_ops amd_iommu_dma_ops = { /* * The function which clues the AMD IOMMU driver into dma_ops. */ + +void __init amd_iommu_init_api(void) +{ + register_iommu(&amd_iommu_ops); +} + int __init amd_iommu_init_dma_ops(void) { struct amd_iommu *iommu; @@ -2256,8 +2262,6 @@ int __init amd_iommu_init_dma_ops(void) /* Make the driver finally visible to the drivers */ dma_ops = &amd_iommu_dma_ops; - register_iommu(&amd_iommu_ops); - amd_iommu_stats_init(); return 0; diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index fb490ce..9dc91b4 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -1292,9 +1292,12 @@ static int __init amd_iommu_init(void) ret = amd_iommu_init_passthrough(); else ret = amd_iommu_init_dma_ops(); + if (ret) goto free; + amd_iommu_init_api(); + amd_iommu_init_notifier(); enable_iommus(); -- 2.7.4