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sparc: use for_each_sg()
This replaces the plain loop over the sglist array with for_each_sg() macro which consists of sg_next() function calls. Since sparc does select ARCH_HAS_SG_CHAIN, it is necessary to use for_each_sg() in order to loop over each sg element. This also help find problems with drivers that do not properly initialize their sg tables when CONFIG_DEBUG_SG is enabled. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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210bff6d23
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8c07a308ec
1 changed files with 5 additions and 3 deletions
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@ -2086,6 +2086,7 @@ int ldc_map_sg(struct ldc_channel *lp,
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struct cookie_state state;
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struct ldc_iommu *iommu;
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int err;
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struct scatterlist *s;
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if (map_perm & ~LDC_MAP_ALL)
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return -EINVAL;
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@ -2112,9 +2113,10 @@ int ldc_map_sg(struct ldc_channel *lp,
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state.pte_idx = (base - iommu->page_table);
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state.nc = 0;
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for (i = 0; i < num_sg; i++)
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fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT,
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sg[i].offset, sg[i].length);
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for_each_sg(sg, s, num_sg, i) {
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fill_cookies(&state, page_to_pfn(sg_page(s)) << PAGE_SHIFT,
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s->offset, s->length);
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}
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return state.nc;
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}
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