Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bdb02504f473be6a785741093913ea2acd05626f
Commit: bdb02504f473be6a785741093913ea2acd05626f
Parent: 8bf50f71cbfc7d043f0f135da72b3feefeaa0eb8
Author: FUJITA Tomonori <[EMAIL PROTECTED]>
AuthorDate: Wed Oct 17 10:51:20 2007 +0200
Committer: Jens Axboe <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 10:51:20 2007 +0200
IA64: iommu uses sg_next with an invalid sg element
sg list elements might not be continuous.
Signed-off-by: FUJITA Tomonori <[EMAIL PROTECTED]>
Signed-off-by: Jens Axboe <[EMAIL PROTECTED]>
---
arch/ia64/hp/common/sba_iommu.c | 4 ++--
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 4338f41..3c95f41 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++;
-
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