From 77d65d6f3d60cebb2dc24cf05408255a21bb6409 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Fri, 27 Jan 2017 17:42:01 +0100
Subject: [PATCH] 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: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
include/linux/dmaengine.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index feee6ec6a13bb..533680860865a 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,