[PATCH v5 4/4] DMA: Freescale: eliminate a compiling warning

[<hongbo.zhang@freescale.com>]

From: Hongbo Zhang <hongbo.zhang@freescale.com>

The variable cookie is initialized in a list_for_each_entry loop, if(unlikely)
the list is empty, this variable will be used uninitialized, so we get a gcc
compiling warning about this. This patch fixes this defect by setting an
initial value to the varialble cookie.

Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
---
 drivers/dma/fsldma.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 16a9a48..14d68a4 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -406,7 +406,7 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
 	struct fsl_desc_sw *desc = tx_to_fsl_desc(tx);
 	struct fsl_desc_sw *child;
 	unsigned long flags;
-	dma_cookie_t cookie;
+	dma_cookie_t cookie = 0;
 
 	spin_lock_irqsave(&chan->desc_lock, flags);
 
-- 
1.7.9.5