dmaengine: consolidate initialization of cookies

[karo-tx-linux.git] / drivers / dma / dmaengine.h

diff --git a/drivers/dma/dmaengine.h b/drivers/dma/dmaengine.h
index 1ca5e0e633f41d52d3c212a9dbc1bfeb614c9d6a..17f983a4e9bac55ba4c32fff728b3e908d8b123f 100644 (file)
--- a/drivers/dma/dmaengine.h
+++ b/drivers/dma/dmaengine.h
@@ -8,6 +8,16 @@
 #include <linux/bug.h>
 #include <linux/dmaengine.h>
 
+/**
+ * dma_cookie_init - initialize the cookies for a DMA channel
+ * @chan: dma channel to initialize
+ */
+static inline void dma_cookie_init(struct dma_chan *chan)
+{
+       chan->cookie = DMA_MIN_COOKIE;
+       chan->completed_cookie = DMA_MIN_COOKIE;
+}
+
 /**
  * dma_cookie_assign - assign a DMA engine cookie to the descriptor
  * @tx: descriptor needing cookie