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From: Dan Carpenter <dan.carpenter@oracle.com>
To: kernel-janitors@vger.kernel.org
Subject: [patch] dmaengine: sirf: off by one in of_dma_sirfsoc_xlate()
Date: Thu, 03 Apr 2014 07:29:33 +0000	[thread overview]
Message-ID: <20140403072933.GD14286@mwanda> (raw)

The ">" here should be ">=" or we are one step beyond the end of the
sdma->channels[] array.

Fixes: 2e041c94628c ('dmaengine: sirf: enable generic dt binding for dma channels')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index a1bd829..03f7820 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -666,7 +666,7 @@ static struct dma_chan *of_dma_sirfsoc_xlate(struct of_phandle_args *dma_spec,
 	struct sirfsoc_dma *sdma = ofdma->of_dma_data;
 	unsigned int request = dma_spec->args[0];
 
-	if (request > SIRFSOC_DMA_CHANNELS)
+	if (request >= SIRFSOC_DMA_CHANNELS)
 		return NULL;
 
 	return dma_get_slave_channel(&sdma->channels[request].chan);

             reply	other threads:[~2014-04-03  7:29 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-03  7:29 Dan Carpenter [this message]
2014-04-04  4:52 ` [patch] dmaengine: sirf: off by one in of_dma_sirfsoc_xlate() Barry Song
2014-04-16  6:42 ` Vinod Koul

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