iommu/amd: Fix missing iommu_shutdown initialization in passthrough mode

commit f2f12b6fc032c7b1419fd6db84e2868b5f05a878 upstream.

The iommu_shutdown callback is not initialized when the AMD
IOMMU driver runs in passthrough mode. Fix that by moving
the callback initialization before the check for
passthrough mode.

Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 6269eb0..ef2d493 100644 (file)
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1468,6 +1468,8 @@ static int __init amd_iommu_init(void)
 
        register_syscore_ops(&amd_iommu_syscore_ops);
 
+       x86_platform.iommu_shutdown = disable_iommus;
+
        if (iommu_pass_through)
                goto out;
 
@@ -1476,7 +1478,6 @@ static int __init amd_iommu_init(void)
        else
                printk(KERN_INFO "AMD-Vi: Lazy IO/TLB flushing enabled\n");
 
-       x86_platform.iommu_shutdown = disable_iommus;
 out:
        return ret;