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iommu/vt-d: Remove set but not used variable 

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/iommu/intel/iommu.c:5643:27: warning: variable 'last_pfn' set but not used [-Wunused-but-set-variable]
5643 |  unsigned long start_pfn, last_pfn;
     |                           ^~~~~~~~

This variable is never used, so remove it.

Fixes: 2a2b8eaa5b ("iommu: Handle freelists when using deferred flushing in iommu drivers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20201127013308.1833610-1-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Lu Baolu 2020-11-27 09:33:08 +08:00 committed by Will Deacon
parent 58a8bb3949
commit 405a43cc00
1 changed files with 1 additions and 2 deletions
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3
drivers/iommu/intel/iommu.c
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@ -4948,13 +4948,12 @@ static void intel_iommu_tlb_sync(struct iommu_domain *domain,
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
unsigned long iova_pfn = IOVA_PFN(gather->start);
size_t size = gather->end - gather->start;
unsigned long start_pfn, last_pfn;
unsigned long start_pfn;
unsigned long nrpages;
int iommu_id;
nrpages = aligned_nrpages(gather->start, size);
start_pfn = mm_to_dma_pfn(iova_pfn);
last_pfn = start_pfn + nrpages - 1;
for_each_domain_iommu(iommu_id, dmar_domain)
iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain,