diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 8fbf40e0713cfc9a4dd7ec64bc66010a42afc644..0d738c95fe4e7eaf5111e7f69f8a276ff5d8a1e8 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -24,6 +24,7 @@ #include #include #include +#include struct scatterlist; @@ -519,6 +520,16 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, (unsigned long)config); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( + struct dma_chan *chan, void *buf, size_t len, + enum dma_data_direction dir, unsigned long flags) +{ + struct scatterlist sg; + sg_init_one(&sg, buf, len); + + return chan->device->device_prep_slave_sg(chan, &sg, 1, dir, flags); +} + static inline int dmaengine_terminate_all(struct dma_chan *chan) { return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);