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    Subject[PATCH 11/25] SPARC32: Fix iommu_flush_iotlb end address
    -stable review patch.  If anyone has any objections, please let us know.
    ------------------

    From: David Miller <davem@davemloft.net>

    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>
    Signed-off-by: Chris Wright <chrisw@sous-sol.org>
    ---
    arch/sparc/mm/iommu.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    --- linux-2.6.17.1.orig/arch/sparc/mm/iommu.c
    +++ linux-2.6.17.1/arch/sparc/mm/iommu.c
    @@ -144,8 +144,9 @@ static void iommu_flush_iotlb(iopte_t *i
    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);
    --
    -
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