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authorBob Breuer <breuerr@mc.net>2006-06-20 00:36:56 -0700
committerDavid S. Miller <davem@davemloft.net>2006-06-20 00:36:56 -0700
commit3185d4d2873a46ca1620d784013f285522091aa0 (patch)
tree2235141eace69aec31aebe70a60bc3e030928181 /arch/sparc
parent92d452f0eb10774fb7779abf876baf9dfb295e6f (diff)
downloadlinux-linaro-stable-3185d4d2873a46ca1620d784013f285522091aa0.tar.gz
[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 <breuerr@mc.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/mm/iommu.c3
1 files changed, 2 insertions, 1 deletions
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);