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Signed-off-by: Jinhui Guo --- drivers/iommu/amd/init.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index ba9e582a8bbe..b695efc54d5b 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3212,9 +3212,6 @@ static bool __init detect_ivrs(void) } =20 out: - /* Make sure ACS will be enabled during PCI probe */ - pci_request_acs(); - return true; } =20 @@ -3284,6 +3281,10 @@ static int __init state_next(void) ret =3D -EINVAL; } else { ret =3D early_amd_iommu_init(); + if (!ret) { + /* Make sure ACS will be enabled during PCI probe */ + pci_request_acs(); + } init_state =3D ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED; } break; --=20 2.20.1