PCI: iova: lockdep false alarm fix

[net-next-2.6.git] / drivers / pci / intel-iommu.c

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 977d29b322957066e1e6ecb26a37cb322b187237..4cb949f0ebd9746e8e0c5d29a6c5fba034bbf370 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1097,6 +1097,8 @@ static void iommu_free_domain(struct dmar_domain *domain)
 }
 
 static struct iova_domain reserved_iova_list;
+static struct lock_class_key reserved_alloc_key;
+static struct lock_class_key reserved_rbtree_key;
 
 static void dmar_init_reserved_ranges(void)
 {
@@ -1107,6 +1109,11 @@ static void dmar_init_reserved_ranges(void)
 
        init_iova_domain(&reserved_iova_list, DMA_32BIT_PFN);
 
+       lockdep_set_class(&reserved_iova_list.iova_alloc_lock,
+               &reserved_alloc_key);
+       lockdep_set_class(&reserved_iova_list.iova_rbtree_lock,
+               &reserved_rbtree_key);
+
        /* IOAPIC ranges shouldn't be accessed by DMA */
        iova = reserve_iova(&reserved_iova_list, IOVA_PFN(IOAPIC_RANGE_START),
                IOVA_PFN(IOAPIC_RANGE_END));