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m68k: Provide dma_alloc_attrs()/dma_free_attrs()

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Since commit 0049fb2603 ("OMAPFB: use
dma_alloc_attrs to allocate memory") we have one non-arch user of
dma_{alloc,free}_attrs().

Hence provide these functions, as wrappers around
dma_{alloc,free}_coherent().

Note that most architectures do it the other way around. But as so far
m68k doesn't support the attributes at all, our solution should generate
smaller code.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Geert Uytterhoeven 2012-12-16 18:27:33 +01:00
parent a49f0d1ea3
commit 4a09ab6771
1 changed files with 16 additions and 0 deletions
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16
arch/m68k/include/asm/dma-mapping.h
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@ -21,6 +21,22 @@ extern void *dma_alloc_coherent(struct device *, size_t,
extern void dma_free_coherent(struct device *, size_t,
void *, dma_addr_t);
static inline void *dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
struct dma_attrs *attrs)
{
/* attrs is not supported and ignored */
return dma_alloc_coherent(dev, size, dma_handle, flag);
}
static inline void dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
struct dma_attrs *attrs)
{
/* attrs is not supported and ignored */
dma_free_coherent(dev, size, cpu_addr, dma_handle);
}
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t flag)
{