linux-kernel - [34-longterm 191/209] mv_xor: fix race in tasklet function

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Message-Id: <1302803767-9715-78-git-send-email-paul.gortmaker@windriver.com>
Date:	Thu, 14 Apr 2011 13:55:49 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	stable@...nel.org, linux-kernel@...r.kernel.org
Cc:	stable-review@...nel.org, Saeed Bishara <saeed@...vell.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [34-longterm 191/209] mv_xor: fix race in tasklet function

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

  =====================================================================
  | This is a commit scheduled for the next v2.6.34 longterm release. |
  | If you see a problem with using this for longterm, please comment.|
  =====================================================================

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: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 drivers/dma/mv_xor.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index ba28b29..35d0d8c 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -449,7 +449,7 @@ mv_xor_slot_cleanup(struct mv_xor_chan *mv_chan)
 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 *
-- 
1.7.4.4

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