iommu/amd: Fix pci_request_acs() call-place

The pci_request_acs() function needs to be called before PCI
probing to be effective. So move it to another call-place to
ensure that.

Signed-off-by: Joerg Roedel <[email protected]>

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 500e7f15f5c266043d5d2bdc27a04f489595be79..0a2ea317120a3763212586f97c2773b5a8c03b03 100644 (file)
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1131,9 +1131,6 @@ static int __init amd_iommu_init_pci(void)
                        break;
        }
 
-       /* Make sure ACS will be enabled */
-       pci_request_acs();
-
        ret = amd_iommu_init_devices();
 
        print_iommu_info();
@@ -1652,6 +1649,9 @@ static bool detect_ivrs(void)
 
        early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size);
 
+       /* Make sure ACS will be enabled during PCI probe */
+       pci_request_acs();
+
        return true;
 }