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authorJoerg Roedel <joerg.roedel@amd.com>2010-02-03 16:13:08 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-02-23 07:37:56 -0800
commit16ecf8a237415fac700d6c227f763a2be566c92a (patch)
tree9bc5ae477ce85a48ea2c8c8a0c7be5d2c9b2603e /arch
parent6d14e6b46af551e2551594ab5ab9356fb4cebbe7 (diff)
downloadlinux-linaro-stable-16ecf8a237415fac700d6c227f763a2be566c92a.tar.gz
x86/amd-iommu: Fix IOMMU-API initialization for iommu=pt
commit f5325094379158e6b876ea0010c807bf7890ec8f upstream 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. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/amd_iommu.h1
-rw-r--r--arch/x86/kernel/amd_iommu.c7
-rw-r--r--arch/x86/kernel/amd_iommu_init.c3
3 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h
index 4b180897e6b5..18aa3f8e0821 100644
--- a/arch/x86/include/asm/amd_iommu.h
+++ b/arch/x86/include/asm/amd_iommu.h
@@ -32,6 +32,7 @@ extern void amd_iommu_flush_all_domains(void);
extern void amd_iommu_flush_all_devices(void);
extern void amd_iommu_shutdown(void);
extern void amd_iommu_apply_erratum_63(u16 devid);
+extern void amd_iommu_init_api(void);
#else
static inline int amd_iommu_init(void) { return -ENODEV; }
static inline void amd_iommu_detect(void) { }
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index e3f85feaae2e..ff964960e065 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -2083,6 +2083,11 @@ static struct dma_map_ops amd_iommu_dma_ops = {
.dma_supported = amd_iommu_dma_supported,
};
+void __init amd_iommu_init_api(void)
+{
+ register_iommu(&amd_iommu_ops);
+}
+
/*
* The function which clues the AMD IOMMU driver into dma_ops.
*/
@@ -2124,8 +2129,6 @@ 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);
-
bus_register_notifier(&pci_bus_type, &device_nb);
amd_iommu_stats_init();
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c8243f04e62d..362ab88c73ac 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1288,9 +1288,12 @@ 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();
+
enable_iommus();
if (iommu_pass_through)