---

yaml --- r: 185756 b: refs/heads/master c: 76bd061 h: refs/heads/master v: v3
git-mirror · Mar 1, 2010 · da052f3 · da052f3
1 parent b972386
commit da052f3
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Showing 3 changed files with 7 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6ca3a7a96e91b1aa8c704153c992b191d35b5747
+refs/heads/master: 76bd061f5c7b7550cdaed68ad6219ea7cee288fc
diff --git a/trunk/drivers/dma/fsldma.c b/trunk/drivers/dma/fsldma.c
@@ -819,8 +819,11 @@ static void fsl_dma_update_completed_cookie(struct fsldma_chan *chan)
 	desc = to_fsl_desc(chan->ld_running.prev);
 	if (dma_is_idle(chan))
 		cookie = desc->async_tx.cookie;
-	else
+	else {
 		cookie = desc->async_tx.cookie - 1;
+		if (unlikely(cookie < DMA_MIN_COOKIE))
+			cookie = DMA_MAX_COOKIE;
+	}
 
 	chan->completed_cookie = cookie;
 

diff --git a/trunk/include/linux/dmaengine.h b/trunk/include/linux/dmaengine.h
@@ -31,6 +31,8 @@
  * if dma_cookie_t is >0 it's a DMA request cookie, <0 it's an error code
  */
 typedef s32 dma_cookie_t;
+#define DMA_MIN_COOKIE	1
+#define DMA_MAX_COOKIE	INT_MAX
 
 #define dma_submit_error(cookie) ((cookie) < 0 ? 1 : 0)