linux-kernel - [PATCH 10/23] mv_xor: fix race in tasklet function

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Message-Id: <20110206232252.955688996@pcw.home.local>
Date:	Mon, 07 Feb 2011 00:23:02 +0100
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org
Cc:	Saeed Bishara <saeed@...vell.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Greg Kroah-Hartman <gregkh@...e.de>, Willy Tarreau <w@....eu>
Subject: [PATCH 10/23] mv_xor: fix race in tasklet function

2.6.27.58-stable review patch.  If anyone has any objections, please let us know.

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

From: Saeed Bishara <saeed@...vell.com>

commit 8333f65ef094e47020cd01452b4637e7daf5a77f upstream.

use mv_xor_slot_cleanup() instead of __mv_xor_slot_cleanup() as the former function
aquires the spin lock that needed to protect the drivers data.

Signed-off-by: Saeed Bishara <saeed@...vell.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Willy Tarreau <w@....eu>

---
 drivers/dma/mv_xor.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: longterm-2.6.27/drivers/dma/mv_xor.c
===================================================================
--- longterm-2.6.27.orig/drivers/dma/mv_xor.c	2011-01-29 11:22:46.657065036 +0100
+++ longterm-2.6.27/drivers/dma/mv_xor.c	2011-01-29 11:27:15.509064355 +0100
@@ -449,7 +449,7 @@
 static void mv_xor_tasklet(unsigned long data)
 {
 	struct mv_xor_chan *chan = (struct mv_xor_chan *) data;
-	__mv_xor_slot_cleanup(chan);
+	mv_xor_slot_cleanup(chan);
 }
 
 static struct mv_xor_desc_slot *


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