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dma-debug: use sg_dma_len accessor

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debug_dma_map_sg() and debug_dma_unmap_sg() use length in struct
scatterlist while debug_dma_sync_sg_for_cpu() and
debug_dma_sync_sg_for_device() use dma_length. This causes bugs
warnings on some IOMMU implementations since these values are not
same; the length doesn't represent the dma length.

We always need to use sg_dma_len() accessor to get the dma length of a
scatterlist entry.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
FUJITA Tomonori 2009-05-27 09:43:02 +09:00 committed by Joerg Roedel
parent 15aedea439
commit 884d05970b
1 changed files with 5 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

10
lib/dma-debug.c
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@ -839,7 +839,7 @@ void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
entry->type = dma_debug_sg;
entry->dev = dev;
entry->paddr = sg_phys(s);
entry->size = s->length;
entry->size = sg_dma_len(s);
entry->dev_addr = sg_dma_address(s);
entry->direction = direction;
entry->sg_call_ents = nents;
@ -847,7 +847,7 @@ void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
if (!PageHighMem(sg_page(s))) {
check_for_stack(dev, sg_virt(s));
check_for_illegal_area(dev, sg_virt(s), s->length);
check_for_illegal_area(dev, sg_virt(s), sg_dma_len(s));
}
add_dma_entry(entry);
@ -873,7 +873,7 @@ void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
.dev = dev,
.paddr = sg_phys(s),
.dev_addr = sg_dma_address(s),
.size = s->length,
.size = sg_dma_len(s),
.direction = dir,
.sg_call_ents = 0,
};
@ -996,7 +996,7 @@ void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
return;
for_each_sg(sg, s, nelems, i) {
check_sync(dev, sg_dma_address(s), s->dma_length, 0,
check_sync(dev, sg_dma_address(s), sg_dma_len(s), 0,
direction, true);
}
}
@ -1012,7 +1012,7 @@ void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
return;
for_each_sg(sg, s, nelems, i) {
check_sync(dev, sg_dma_address(s), s->dma_length, 0,
check_sync(dev, sg_dma_address(s), sg_dma_len(s), 0,
direction, false);
}
}