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| author | Dan Williams <dan.j.williams@intel.com> | 2009-03-25 09:13:25 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-03-25 09:13:25 -0700 |
| commit | 729b5d1b8ec72c28e99840b3f300ba67726e3ab9 (patch) | |
| tree | 8eac6444ea80bf05f461eb77243f56b008ee5083 /include | |
| parent | 06164f3194e01ea4c76941ac60f541d656c8975f (diff) | |
| download | linux-stable-729b5d1b8ec72c28e99840b3f300ba67726e3ab9.tar.gz linux-stable-729b5d1b8ec72c28e99840b3f300ba67726e3ab9.tar.bz2 linux-stable-729b5d1b8ec72c28e99840b3f300ba67726e3ab9.zip | |
dmaengine: allow dma support for async_tx to be toggled
Provide a config option for blocking the allocation of dma channels to
the async_tx api.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dmaengine.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 96e676e5bf9b..2afc2c95e42d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -288,6 +288,24 @@ static inline void net_dmaengine_put(void) } #endif +#ifdef CONFIG_ASYNC_TX_DMA +#define async_dmaengine_get() dmaengine_get() +#define async_dmaengine_put() dmaengine_put() +#define async_dma_find_channel(type) dma_find_channel(type) +#else +static inline void async_dmaengine_get(void) +{ +} +static inline void async_dmaengine_put(void) +{ +} +static inline struct dma_chan * +async_dma_find_channel(enum dma_transaction_type type) +{ + return NULL; +} +#endif + dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest, void *src, size_t len); dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan, |