Merge git://git.infradead.org/iommu-2.6

* git://git.infradead.org/iommu-2.6: (23 commits)
  intel-iommu: Disable PMRs after we enable translation, not before
  intel-iommu: Kill DMAR_BROKEN_GFX_WA option.
  intel-iommu: Fix integer wrap on 32 bit kernels
  intel-iommu: Fix integer overflow in dma_pte_{clear_range,free_pagetable}()
  intel-iommu: Limit DOMAIN_MAX_PFN to fit in an 'unsigned long'
  intel-iommu: Fix kernel hang if interrupt remapping disabled in BIOS
  intel-iommu: Disallow interrupt remapping if not all ioapics covered
  intel-iommu: include linux/dmi.h to use dmi_ routines
  pci/dmar: correct off-by-one error in dmar_fault()
  intel-iommu: Cope with yet another BIOS screwup causing crashes
  intel-iommu: iommu init error path bug fixes
  intel-iommu: Mark functions with __init
  USB: Work around BIOS bugs by quiescing USB controllers earlier
  ia64: IOMMU passthrough mode shouldn't trigger swiotlb init
  intel-iommu: make domain_add_dev_info() call domain_context_mapping()
  intel-iommu: Unify hardware and software passthrough support
  intel-iommu: Cope with broken HP DC7900 BIOS
  iommu=pt is a valid early param
  intel-iommu: double kfree()
  intel-iommu: Kill pointless intel_unmap_single() function
  ...

Fixed up trivial include lines conflict in drivers/pci/intel-iommu.c

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 44803644ca05..0ed78a764ded 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -603,6 +603,9 @@ int __init intr_remapping_supported(void)
         if (disable_intremap)
                 return 0;
 
+        if (!dmar_ir_support())
+                return 0;
+
         for_each_drhd_unit(drhd) {
                 struct intel_iommu *iommu = drhd->iommu;
 
@@ -618,6 +621,11 @@ int __init enable_intr_remapping(int eim)
         struct dmar_drhd_unit *drhd;
         int setup = 0;
 
+        if (parse_ioapics_under_ir() != 1) {
+                printk(KERN_INFO "Not enable interrupt remapping\n");
+                return -1;
+        }
+
         for_each_drhd_unit(drhd) {
                 struct intel_iommu *iommu = drhd->iommu;