Commit 3185d4d2 authored Jun 20, 2006 by Bob Breuer Committed by David S. Miller Jun 20, 2006

[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>

parent 92d452f0

arch/sparc/mm/iommu.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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);