linux-kernel - [PATCH 3/3] dma: sirf: use NULL instead of 0

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Message-id: <000301ce9291$039da7a0$0ad8f6e0$@samsung.com>
Date:	Tue, 06 Aug 2013 19:37:56 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Vinod Koul' <vinod.koul@...el.com>
Cc:	'Dan Williams' <djbw@...com>, Barry Song <baohua.song@....com>,
	'Rongjun Ying' <Rongjun.Ying@....com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] dma: sirf: use NULL instead of 0

sirfsoc_dma_prep_cyclic() returns pointer, thus NULL should be
used instead of 0 in order to fix the following sparse warning:

drivers/dma/sirf-dma.c:598:24: warning: Using plain integer as NULL pointer

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/dma/sirf-dma.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index 716b23e..973ecd0 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -595,7 +595,7 @@ sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr,
 	spin_unlock_irqrestore(&schan->lock, iflags);
 
 	if (!sdesc)
-		return 0;
+		return NULL;
 
 	/* Place descriptor in prepared list */
 	spin_lock_irqsave(&schan->lock, iflags);
-- 
1.7.10.4


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