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path: root/drivers/pci/dmar.c
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Diffstat (limited to 'drivers/pci/dmar.c')
-rw-r--r--drivers/pci/dmar.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index c00e387f5b7..1a59423a8ed 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -377,11 +377,18 @@ int __init early_dmar_detect(void)
377 return (ACPI_SUCCESS(status) ? 1 : 0); 377 return (ACPI_SUCCESS(status) ? 1 : 0);
378} 378}
379 379
380struct intel_iommu *alloc_iommu(struct intel_iommu *iommu, 380struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd)
381 struct dmar_drhd_unit *drhd)
382{ 381{
382 struct intel_iommu *iommu;
383 int map_size; 383 int map_size;
384 u32 ver; 384 u32 ver;
385 static int iommu_allocated = 0;
386
387 iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
388 if (!iommu)
389 return NULL;
390
391 iommu->seq_id = iommu_allocated++;
385 392
386 iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K); 393 iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K);
387 if (!iommu->reg) { 394 if (!iommu->reg) {