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Commit 77d65d6f authored by Boris Brezillon's avatar Boris Brezillon Committed by Vinod Koul
Browse files

dmaengine: Provide a wrapper for memcpy operations 



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

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent adee40b2

include/linux/dmaengine.h

+11 −0
Original line number Diff line number Diff line
@@ -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,