linux-kernel - [PATCH 2/2] EDMA: TI: fixed wrongly initialized data parameter to the edma callback

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Date:	Mon, 23 Mar 2015 21:35:01 +0100
From:	Petr Kulhavy <petr@...ix.com>
To:	vinod.koul@...el.com
Cc:	dan.j.williams@...el.com, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org, peter.ujfalusi@...com,
	linux-omap@...r.kernel.org, trivial@...nel.org,
	Petr Kulhavy <petr@...ix.com>
Subject: [PATCH 2/2] EDMA: TI: fixed wrongly initialized data parameter to the edma callback

The "data" parameter passed indirectly to the edma_callback() should be
edma_chan and not the dma_chan.

This bug was so far harmless since the offset of struct dma_chan within struct
edma_chan is 0. However as soon as someone changes struct edma_chan this would
cause troubles.

Signed-off-by: Petr Kulhavy <petr@...ix.com>
---
 drivers/dma/edma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 1465610..4c8208b 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -813,7 +813,7 @@ static int edma_alloc_chan_resources(struct dma_chan *chan)
 	LIST_HEAD(descs);
 
 	a_ch_num = edma_alloc_channel(echan->ch_num, edma_callback,
-					chan, EVENTQ_DEFAULT);
+					echan, EVENTQ_DEFAULT);
 
 	if (a_ch_num < 0) {
 		ret = -ENODEV;
-- 
1.9.1

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