From 9169b8b2bb5169ff8339cca8a17b6bb1e152162c Mon Sep 17 00:00:00 2001 From: Bob Breuer Date: Fri, 18 Aug 2006 21:26:56 +0200 Subject: [PATCH] SPARC32: 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 Acked-by: William Lee Irwin III Signed-off-by: Adrian Bunk --- 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 77840c804786..7215849db392 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