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| author |   FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2007-10-23 12:58:39 +0200 |
|---|---|---|
| committer |   Jens Axboe <jens.axboe@oracle.com> | 2007-10-23 12:58:39 +0200 |
| commit | cb92ae81509eb5ddaea53884b60437502c837405 (patch) | |
| tree | 5a85ce2a035cdb0b9a343dc7e08f23af42f858df /arch/sparc64 | |
| parent | fvr32: fixup dma-mapping for new sg layout (diff) | |
| download | linux-dev-cb92ae81509eb5ddaea53884b60437502c837405.tar.xz linux-dev-cb92ae81509eb5ddaea53884b60437502c837405.zip | |
sparc64: zero out dma_length
zero out dma_length in the entry immediately following the last mapped
entry for unmap_sg.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/iommu_common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/iommu_common.c b/arch/sparc64/kernel/iommu_common.c index 78e8277df655..b70324e0d83d 100644 --- a/arch/sparc64/kernel/iommu_common.c +++ b/arch/sparc64/kernel/iommu_common.c @@ -233,6 +233,11 @@ unsigned long prepare_sg(struct scatterlist *sg, int nents) dma_sg->dma_address = dent_addr; dma_sg->dma_length = dent_len; + if (dma_sg != sg) { + dma_sg = next_sg(dma_sg); + dma_sg->dma_length = 0; + } + return ((unsigned long) dent_addr + (unsigned long) dent_len + (IO_PAGE_SIZE - 1UL)) >> IO_PAGE_SHIFT; |