diff options
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index c5167fe0bd5f..cfdc4b60ccbe 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1718,7 +1718,6 @@ static const struct attribute_group *amd_iommu_groups[] = { static int __init iommu_init_pci(struct amd_iommu *iommu) { int cap_ptr = iommu->cap_ptr; - u32 low, high; int ret; iommu->dev = pci_get_domain_bus_and_slot(0, PCI_BUS_NUM(iommu->devid), @@ -1736,10 +1735,7 @@ static int __init iommu_init_pci(struct amd_iommu *iommu) amd_iommu_iotlb_sup = false; /* read extended feature bits */ - low = readl(iommu->mmio_base + MMIO_EXT_FEATURES); - high = readl(iommu->mmio_base + MMIO_EXT_FEATURES + 4); - - iommu->features = ((u64)high << 32) | low; + iommu->features = readq(iommu->mmio_base + MMIO_EXT_FEATURES); if (iommu_feature(iommu, FEATURE_GT)) { int glxval; |