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-rw-r--r--include/linux/dmaengine.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 8fbf40e0713c..0d738c95fe4e 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -24,6 +24,7 @@
#include <linux/device.h>
#include <linux/uio.h>
#include <linux/dma-direction.h>
+#include <linux/scatterlist.h>
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);