x86/amd-iommu: Fix PCI hotplug with passthrough mode

The device change notifier is initialized in the dma_ops
initialization path. But this path is never executed for
iommu=pt. Move the notifier initialization to IOMMU hardware
init code to fix this.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index df01c691d130..309a52f96e0b 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -1285,6 +1285,8 @@ static int __init amd_iommu_init(void)
         if (ret)
                 goto free;
 
+        amd_iommu_init_notifier();
+
         enable_iommus();
 
         if (iommu_pass_through)