Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block:
  [SCSI] Remove full sg table memset()
  [SCSI] ide-scsi: remove usage of sg_last()
  Fix loop terminating conditions in fill_sg().
  [BLOCK] Clear sg entry before filling in blk_rq_map_sg()
  IA64: iommu uses sg_next with an invalid sg element
  cciss: disable DMA refetch on Smart Array P600
  swiotlb: fix map_sg failure handling
  SPARC64: fix iommu sg chaining
  [SCSI] ide-scsi: use scsi_sg_count() instead of ->use_sg

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 4338f4123f31..3c95f4184b99 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -1179,7 +1179,6 @@ sba_fill_pdir(
         u64 *pdirp = NULL;
         unsigned long dma_offset = 0;
 
-        dma_sg--;
         while (nents-- > 0) {
                 int     cnt = startsg->dma_length;
                 startsg->dma_length = 0;
@@ -1201,7 +1200,8 @@ sba_fill_pdir(
                         u32 pide = startsg->dma_address & ~PIDE_FLAG;
                         dma_offset = (unsigned long) pide & ~iovp_mask;
                         startsg->dma_address = 0;
-                        dma_sg = sg_next(dma_sg);
+                        if (n_mappings)
+                                dma_sg = sg_next(dma_sg);
                         dma_sg->dma_address = pide | ioc->ibase;
                         pdirp = &(ioc->pdir_base[pide >> iovp_shift]);
                         n_mappings++;