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authorDan Williams <dan.j.williams@intel.com>2010-03-27 02:52:10 +0300
committerDan Williams <dan.j.williams@intel.com>2010-03-27 02:52:10 +0300
commitbca3469205402d9fb14060d255d8786ae2256640 (patch)
tree3b0c7f246fb9a6eafd3a82dd621dd9753589b3f4 /include/linux/dmaengine.h
parent0793448187643b50af89d36b08470baf45a3cab4 (diff)
downloadlinux-bca3469205402d9fb14060d255d8786ae2256640.tar.xz
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.h10
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);