[ 3.5.yuz extended stable ] Patch "dmaengine: imx-dma: fix missing unlock on error in" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    dmaengine: imx-dma: fix missing unlock on error in

to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.yuz tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From 248c82dd15121fe2ecbdfc8b6830fefeb1e3451d Mon Sep 17 00:00:00 2001
From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
Date: Sun, 21 Oct 2012 19:58:30 +0800
Subject: [PATCH] dmaengine: imx-dma: fix missing unlock on error in
 imxdma_xfer_desc()

commit 720dfd250e48a8c7fd1b2b8645955413989c4ee0 upstream.

Add the missing unlock on the error handling path in function
imxdma_xfer_desc().

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
Signed-off-by: Vinod Koul <vinod.koul at linux.intel.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 drivers/dma/imx-dma.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 5084975..8aa9113 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -474,8 +474,10 @@ static int imxdma_xfer_desc(struct imxdma_desc *d)
 			slot = i;
 			break;
 		}
-		if (slot < 0)
+		if (slot < 0) {
+			spin_unlock_irqrestore(&imxdma->lock, flags);
 			return -EBUSY;
+		}

 		imxdma->slots_2d[slot].xsr = d->x;
 		imxdma->slots_2d[slot].ysr = d->y;
--
1.7.9.5