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authorJoerg Roedel <joerg.roedel@amd.com>2009-06-09 17:52:27 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2009-06-15 15:20:40 +0200
commit0975904276552c8e201dad0ad31152ba8a21505a (patch)
treec7db491abe7dcb001c46ad30341475755f5b07ca /arch/x86/kernel/amd_iommu_init.c
parent92db1e6af747faa129e236d68386af26a0efc12b (diff)
amd-iommu: disable IOMMU hardware on shutdown
When the IOMMU stays enabled the BIOS may not be able to finish the machine shutdown properly. So disable the hardware on shutdown. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
-rw-r--r--arch/x86/kernel/amd_iommu_init.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 238989ec077..575ca46211b 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1273,6 +1273,11 @@ free:
goto out;
}
+void amd_iommu_shutdown(void)
+{
+ disable_iommus();
+}
+
/****************************************************************************
*
* Early detect code. This code runs at IOMMU detection time in the DMA