From 3185d4d2873a46ca1620d784013f285522091aa0 Mon Sep 17 00:00:00 2001 From: Bob Breuer Date: Tue, 20 Jun 2006 00:36:56 -0700 Subject: [PATCH] [SPARC]: Fix iommu_flush_iotlb end address Fix the calculation of the end address when flushing iotlb entries to ram. This bug has been a cause of esp dma errors, and it affects HyperSPARC systems much worse than SuperSPARC systems. Signed-off-by: Bob Breuer Signed-off-by: David S. Miller --- arch/sparc/mm/iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c index 77840c8047..7215849db3 100644 --- a/arch/sparc/mm/iommu.c +++ b/arch/sparc/mm/iommu.c @@ -144,8 +144,9 @@ static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte) unsigned long start; unsigned long end; - start = (unsigned long)iopte & PAGE_MASK; + start = (unsigned long)iopte; end = PAGE_ALIGN(start + niopte*sizeof(iopte_t)); + start &= PAGE_MASK; if (viking_mxcc_present) { while(start < end) { viking_mxcc_flush_page(start); -- 2.39.5