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| author |   Dan Williams <dan.j.williams@intel.com> | 2010-03-26 16:52:10 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-03-26 16:52:10 -0700 |
| commit | bca3469205402d9fb14060d255d8786ae2256640 (patch) | |
| tree | 3b0c7f246fb9a6eafd3a82dd621dd9753589b3f4 /include/linux/dmaengine.h | |
| parent | DMAENGINE: generic channel status v2 (diff) | |
| download | linux-dev-bca3469205402d9fb14060d255d8786ae2256640.tar.xz linux-dev-bca3469205402d9fb14060d255d8786ae2256640.zip | |
dmaengine: provide helper for setting txstate
Simple conditional struct filler to cut out some duplicated code.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 55b08e84ac8d..50b7b3e0d572 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -628,6 +628,16 @@ static inline enum dma_status dma_async_is_complete(dma_cookie_t cookie, return DMA_IN_PROGRESS; } +static inline void +dma_set_tx_state(struct dma_tx_state *st, dma_cookie_t last, dma_cookie_t used, u32 residue) +{ + if (st) { + st->last = last; + st->used = used; + st->residue = residue; + } +} + enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie); #ifdef CONFIG_DMA_ENGINE enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); |