Merge tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - OF_IOMMU support for the Rockchip iommu driver so that it can use
   generic DT bindings

 - rework of locking in the AMD IOMMU interrupt remapping code to make
   it work better in RT kernels

 - support for improved iotlb flushing in the AMD IOMMU driver

 - support for 52-bit physical and virtual addressing in the ARM-SMMU

 - various other small fixes and cleanups

* tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (53 commits)
  iommu/io-pgtable-arm: Avoid warning with 32-bit phys_addr_t
  iommu/rockchip: Support sharing IOMMU between masters
  iommu/rockchip: Add runtime PM support
  iommu/rockchip: Fix error handling in init
  iommu/rockchip: Use OF_IOMMU to attach devices automatically
  iommu/rockchip: Use IOMMU device for dma mapping operations
  dt-bindings: iommu/rockchip: Add clock property
  iommu/rockchip: Control clocks needed to access the IOMMU
  iommu/rockchip: Fix TLB flush of secondary IOMMUs
  iommu/rockchip: Use iopoll helpers to wait for hardware
  iommu/rockchip: Fix error handling in attach
  iommu/rockchip: Request irqs in rk_iommu_probe()
  iommu/rockchip: Fix error handling in probe
  iommu/rockchip: Prohibit unbind and remove
  iommu/amd: Return proper error code in irq_remapping_alloc()
  iommu/amd: Make amd_iommu_devtable_lock a spin_lock
  iommu/amd: Drop the lock while allocating new irq remap table
  iommu/amd: Factor out setting the remap table for a devid
  iommu/amd: Use `table' instead `irt' as variable name in amd_iommu_update_ga()
  iommu/amd: Remove the special case from alloc_irq_table()
  ...

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 24d1b1b42013..749d8f235346 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5043,7 +5043,6 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
 {
 	struct dmar_domain *dmar_domain = to_dmar_domain(domain);
 	struct page *freelist = NULL;
-	struct intel_iommu *iommu;
 	unsigned long start_pfn, last_pfn;
 	unsigned int npages;
 	int iommu_id, level = 0;
@@ -5062,12 +5061,9 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
 
 	npages = last_pfn - start_pfn + 1;
 
-	for_each_domain_iommu(iommu_id, dmar_domain) {
-		iommu = g_iommus[iommu_id];
-
+	for_each_domain_iommu(iommu_id, dmar_domain)
 		iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain,
 				      start_pfn, npages, !freelist, 0);
-	}
 
 	dma_free_pagelist(freelist);