IA64: iommu uses sg_next with an invalid sg element
sg list elements might not be continuous. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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@ -1179,7 +1179,6 @@ sba_fill_pdir(
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u64 *pdirp = NULL;
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unsigned long dma_offset = 0;
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dma_sg--;
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while (nents-- > 0) {
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int cnt = startsg->dma_length;
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startsg->dma_length = 0;
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@ -1201,7 +1200,8 @@ sba_fill_pdir(
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u32 pide = startsg->dma_address & ~PIDE_FLAG;
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dma_offset = (unsigned long) pide & ~iovp_mask;
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startsg->dma_address = 0;
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dma_sg = sg_next(dma_sg);
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if (n_mappings)
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dma_sg = sg_next(dma_sg);
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dma_sg->dma_address = pide | ioc->ibase;
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pdirp = &(ioc->pdir_base[pide >> iovp_shift]);
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n_mappings++;
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