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[ARM] dma: Reduce to one dma_sync_sg_* implementation

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2008-09-25 21:38:41 +01:00
committed by Russell King
parent 01135d92c1
commit 2638b4dbe7
3 changed files with 31 additions and 38 deletions
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48
arch/arm/common/dmabounce.c
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@@ -468,45 +468,23 @@ void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_addr,
}
EXPORT_SYMBOL(dma_sync_single_range_for_device);
void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction dir)
int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
unsigned long off, size_t sz, enum dma_data_direction dir)
{
struct scatterlist *s;
int i;
dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
__func__, sg, nents, dir);
BUG_ON(dir == DMA_NONE);
for_each_sg(sg, s, nents, i) {
dma_addr_t dma_addr = s->dma_address;
unsigned int length = s->length;
sync_single(dev, dma_addr, length, dir);
}
dev_dbg(dev, "%s(dma=%#lx,off=%#lx,sz=%zx,dir=%x)\n",
__func__, addr, off, sz, dir);
return sync_single(dev, addr, off + sz, dir);
}
EXPORT_SYMBOL(dmabounce_sync_for_cpu);
void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction dir)
int dmabounce_sync_for_device(struct device *dev, dma_addr_t addr,
unsigned long off, size_t sz, enum dma_data_direction dir)
{
struct scatterlist *s;
int i;
dev_dbg(dev, "%s(sg=%p,nents=%d,dir=%x)\n",
__func__, sg, nents, dir);
BUG_ON(dir == DMA_NONE);
for_each_sg(sg, s, nents, i) {
dma_addr_t dma_addr = s->dma_address;
unsigned int length = s->length;
sync_single(dev, dma_addr, length, dir);
}
dev_dbg(dev, "%s(dma=%#lx,off=%#lx,sz=%zx,dir=%x)\n",
__func__, addr, off, sz, dir);
return sync_single(dev, addr, off + sz, dir);
}
EXPORT_SYMBOL(dmabounce_sync_for_device);
static int
dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev, const char *name,
@@ -618,8 +596,6 @@ dmabounce_unregister_dev(struct device *dev)
EXPORT_SYMBOL(dma_map_single);
EXPORT_SYMBOL(dma_unmap_single);
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
EXPORT_SYMBOL(dma_sync_sg_for_device);
EXPORT_SYMBOL(dmabounce_register_dev);
EXPORT_SYMBOL(dmabounce_unregister_dev);