Almost all ->device_prep_dma_xx() methods have a wrapper defined in
dmaengine.h. Add one for  ->device_prep_dma_memcpy().

Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com>
---
 include/linux/dmaengine.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index feee6ec6a13b..533680860865 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -894,6 +894,17 @@ static inline struct dma_async_tx_descriptor 
*dmaengine_prep_dma_memset(
                                                    len, flags);
 }
 
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy(
+               struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
+               size_t len, unsigned long flags)
+{
+       if (!chan || !chan->device || !chan->device->device_prep_dma_memcpy)
+               return NULL;
+
+       return chan->device->device_prep_dma_memcpy(chan, dest, src,
+                                                   len, flags);
+}
+
 static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg(
                struct dma_chan *chan,
                struct scatterlist *dst_sg, unsigned int dst_nents,
-- 
2.7.4

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