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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-02-12 20:26:05 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-12 20:26:05 +0100 |
| commit | f454aa6b90be8c5845d1e4716e12479f6ba26538 (patch) | |
| tree | 41d6f27ab7b15d7ed6c83eaa035e86ce493d946c | |
| parent | [ARM] Convert dmabounce statistics to use a device attribute (diff) | |
| download | linux-f454aa6b90be8c5845d1e4716e12479f6ba26538.tar.xz linux-f454aa6b90be8c5845d1e4716e12479f6ba26538.zip | |
[ARM] Provide dummy noncoherent DMA API
We don't currently support the noncoherent DMA API, but it needs to
be provided for kernels with devres to link.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | include/asm-arm/dma-mapping.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h index 9bc46b486afb..a59399915bcd 100644 --- a/include/asm-arm/dma-mapping.h +++ b/include/asm-arm/dma-mapping.h @@ -61,6 +61,22 @@ static inline int dma_mapping_error(dma_addr_t dma_addr) return dma_addr == ~0; } +/* + * Dummy noncoherent implementation. We don't provide a dma_cache_sync + * function so drivers using this API are highlighted with build warnings. + */ +static inline void * +dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp) +{ + return NULL; +} + +static inline void +dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t handle) +{ +} + /** * dma_alloc_coherent - allocate consistent memory for DMA * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices |