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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 10:09:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 10:09:16 -0700
commit92d15c2ccbb3e31a3fc71ad28fdb55e1319383c0 (patch)
tree8d83c0dc3c6b935d8367e331872f242b742f0a8a /lib
parentf20bf6125605acbbc7eb8c9420d7221c91aa83eb (diff)
parent644bd2f048972d75eb1979b1fdca257d528ce687 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: (63 commits) Fix memory leak in dm-crypt SPARC64: sg chaining support SPARC: sg chaining support PPC: sg chaining support PS3: sg chaining support IA64: sg chaining support x86-64: enable sg chaining x86-64: update pci-gart iommu to sg helpers x86-64: update nommu to sg helpers x86-64: update calgary iommu to sg helpers swiotlb: sg chaining support i386: enable sg chaining i386 dma_map_sg: convert to using sg helpers mmc: need to zero sglist on init Panic in blk_rq_map_sg() from CCISS driver remove sglist_len remove blk_queue_max_phys_segments in libata revert sg segment size ifdefs Fixup u14-34f ENABLE_SG_CHAINING qla1280: enable use_sg_chaining option ...
Diffstat (limited to 'lib')
-rw-r--r--lib/swiotlb.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 30c1400e749..c419ecf334c 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -677,16 +677,17 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
* same here.
*/
int
-swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
+swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
int dir)
{
+ struct scatterlist *sg;
void *addr;
dma_addr_t dev_addr;
int i;
BUG_ON(dir == DMA_NONE);
- for (i = 0; i < nelems; i++, sg++) {
+ for_each_sg(sgl, sg, nelems, i) {
addr = SG_ENT_VIRT_ADDRESS(sg);
dev_addr = virt_to_bus(addr);
if (swiotlb_force || address_needs_mapping(hwdev, dev_addr)) {
@@ -696,7 +697,7 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
to do proper error handling. */
swiotlb_full(hwdev, sg->length, dir, 0);
swiotlb_unmap_sg(hwdev, sg - i, i, dir);
- sg[0].dma_length = 0;
+ sgl[0].dma_length = 0;
return 0;
}
sg->dma_address = virt_to_bus(map);
@@ -712,19 +713,21 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
* concerning calls here are the same as for swiotlb_unmap_single() above.
*/
void
-swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
+swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
int dir)
{
+ struct scatterlist *sg;
int i;
BUG_ON(dir == DMA_NONE);
- for (i = 0; i < nelems; i++, sg++)
+ for_each_sg(sgl, sg, nelems, i) {
if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
unmap_single(hwdev, bus_to_virt(sg->dma_address),
sg->dma_length, dir);
else if (dir == DMA_FROM_DEVICE)
dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
+ }
}
/*
@@ -735,19 +738,21 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
* and usage.
*/
static void
-swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg,
+swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl,
int nelems, int dir, int target)
{
+ struct scatterlist *sg;
int i;
BUG_ON(dir == DMA_NONE);
- for (i = 0; i < nelems; i++, sg++)
+ for_each_sg(sgl, sg, nelems, i) {
if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
sync_single(hwdev, bus_to_virt(sg->dma_address),
sg->dma_length, dir, target);
else if (dir == DMA_FROM_DEVICE)
dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
+ }
}
void