linux-kernel - [ 20/68] ARM: S3C24XX: DMA resume regression fix

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Date:	Fri, 09 Mar 2012 11:02:34 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Gusakov Andrey <dron0gus@...il.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Kukjin Kim <kgene.kim@...sung.com>
Subject: [ 20/68] ARM: S3C24XX: DMA resume regression fix

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gusakov Andrey <dron0gus@...il.com>

commit e39d40c65dfd8390b50c03482ae9e289b8a8f351 upstream.

s3c2410_dma_suspend suspends channels from 0 to dma_channels.
s3c2410_dma_resume resumes channels in reverse order. So
pointer should be decremented instead of being incremented.

Signed-off-by: Gusakov Andrey <dron0gus@...il.com>
Reviewed-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Kukjin Kim <kgene.kim@...sung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/plat-s3c24xx/dma.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -1249,7 +1249,7 @@ static void s3c2410_dma_resume(void)
 	struct s3c2410_dma_chan *cp = s3c2410_chans + dma_channels - 1;
 	int channel;
 
-	for (channel = dma_channels - 1; channel >= 0; cp++, channel--)
+	for (channel = dma_channels - 1; channel >= 0; cp--, channel--)
 		s3c2410_dma_resume_chan(cp);
 }
 


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