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alpha/dma: use common noop dma ops

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Some of the alpha pci noop dma ops are identical to the common ones.
Use them.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Christian Borntraeger 2016-02-02 21:46:33 -08:00 committed by Michael S. Tsirkin
parent a8463d4b0e
commit 6aca050384
1 changed files with 4 additions and 42 deletions
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46
arch/alpha/kernel/pci-noop.c
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@ -123,44 +123,6 @@ static void *alpha_noop_alloc_coherent(struct device *dev, size_t size,
return ret;
}
static void alpha_noop_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_addr,
struct dma_attrs *attrs)
{
free_pages((unsigned long)cpu_addr, get_order(size));
}
static dma_addr_t alpha_noop_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
return page_to_pa(page) + offset;
}
static int alpha_noop_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
enum dma_data_direction dir, struct dma_attrs *attrs)
{
int i;
struct scatterlist *sg;
for_each_sg(sgl, sg, nents, i) {
void *va;
BUG_ON(!sg_page(sg));
va = sg_virt(sg);
sg_dma_address(sg) = (dma_addr_t)virt_to_phys(va);
sg_dma_len(sg) = sg->length;
}
return nents;
}
static int alpha_noop_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
static int alpha_noop_supported(struct device *dev, u64 mask)
{
return mask < 0x00ffffffUL ? 0 : 1;
@ -168,10 +130,10 @@ static int alpha_noop_supported(struct device *dev, u64 mask)
struct dma_map_ops alpha_noop_ops = {
.alloc = alpha_noop_alloc_coherent,
.free = alpha_noop_free_coherent,
.map_page = alpha_noop_map_page,
.map_sg = alpha_noop_map_sg,
.mapping_error = alpha_noop_mapping_error,
.free = dma_noop_free_coherent,
.map_page = dma_noop_map_page,
.map_sg = dma_noop_map_sg,
.mapping_error = dma_noop_mapping_error,
.dma_supported = alpha_noop_supported,
};