From 405a43cc00471d9f06c58704448f1a43e331826a Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Fri, 27 Nov 2020 09:33:08 +0800 Subject: [PATCH] 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: 2a2b8eaa5b25 ("iommu: Handle freelists when using deferred flushing in iommu drivers") Reported-by: kernel test robot Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20201127013308.1833610-1-baolu.lu@linux.intel.com Signed-off-by: Will Deacon --- drivers/iommu/intel/iommu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 6d519a699ac2..e27eb6fc15f7 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -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, -- GitLab