linux-kernel - [PATCH 5/6] intel_mid_dma: fix the WARN

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Date:	Mon,  4 Oct 2010 16:08:25 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	dan.j.williams@...el.com, linux-kernel@...r.kernel.org,
	alan@...ux.intel.com, ramesh.b.k.v@...el.com,
	yong.y.wang@...ux.intel.com
Cc:	Vinod Koul <vinod.koul@...el.com>
Subject: [PATCH 5/6] intel_mid_dma: fix the WARN_ONs

Moved the WARN_ON to BUG_ON, as WARN_ON if hit,
can cause null pointer derefrences

Signed-off-by: Vinod Koul <vinod.koul@...el.com>
Signed-off-by: Alan Cox <alan@...ux.intel.com>
---
 drivers/dma/intel_mid_dma.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
index 2ae1086..ef7ffb8 100644
--- a/drivers/dma/intel_mid_dma.c
+++ b/drivers/dma/intel_mid_dma.c
@@ -581,15 +581,15 @@ static struct dma_async_tx_descriptor *intel_mid_dma_prep_memcpy(
 	enum intel_mid_dma_width width = 0;
 
 	pr_debug("MDMA: Prep for memcpy\n");
-	WARN_ON(!chan);
+	BUG_ON(!chan);
 	if (!len)
 		return NULL;
 
 	mids = chan->private;
-	WARN_ON(!mids);
+	BUG_ON(!mids);
 
 	midc = to_intel_mid_dma_chan(chan);
-	WARN_ON(!midc);
+	BUG_ON(!midc);
 
 	pr_debug("MDMA:called for DMA %x CH %d Length %zu\n",
 				midc->dma->pci_id, midc->ch_id, len);
-- 
1.6.6.1

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