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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2015-06-24 16:55:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 17:49:40 -0700 |
| commit | 8c07a308ec5284fe41aefe48ac2ef4cfcd71ddbf (patch) | |
| tree | 9a886057ed3d682e6646ef1612e90d032eb09e7d | |
| parent | 210bff6d231217c3c63e0115af7eb01603b83015 (diff) | |
| download | linux-8c07a308ec5284fe41aefe48ac2ef4cfcd71ddbf.tar.bz2 | |
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>
| -rw-r--r-- | arch/sparc/kernel/ldc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 7d3ca30fcd15..1ae5eb1bb045 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -2086,6 +2086,7 @@ int ldc_map_sg(struct ldc_channel *lp, struct cookie_state state; struct ldc_iommu *iommu; int err; + struct scatterlist *s; if (map_perm & ~LDC_MAP_ALL) return -EINVAL; @@ -2112,9 +2113,10 @@ int ldc_map_sg(struct ldc_channel *lp, state.pte_idx = (base - iommu->page_table); state.nc = 0; - for (i = 0; i < num_sg; i++) - fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT, - sg[i].offset, sg[i].length); + for_each_sg(sg, s, num_sg, i) { + fill_cookies(&state, page_to_pfn(sg_page(s)) << PAGE_SHIFT, + s->offset, s->length); + } return state.nc; } |