linux-kernel - [PATCH 2/2] char: fix possible double-unlock in specialix.c

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Message-Id: <1203705284.5962.19.camel@brick>
Date:	Fri, 22 Feb 2008 10:34:44 -0800
From:	Harvey Harrison <harvey.harrison@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] char: fix possible double-unlock in specialix.c

Noticed by sparse, trivial to see:
drivers/char/specialix.c:2112:3: warning: context imbalance in 'sx_throttle' - unexpected unlock

Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
---
And with the torrent of warnings fixed, here we find a double-unlock.

 drivers/char/specialix.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 5487f37..b508e2c 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -2109,7 +2109,6 @@ static void sx_throttle(struct tty_struct * tty)
 	sx_out(bp, CD186x_CAR, port_No(port));
 	spin_unlock_irqrestore(&bp->lock, flags);
 	if (I_IXOFF(tty)) {
-		spin_unlock_irqrestore(&bp->lock, flags);
 		sx_wait_CCR(bp);
 		spin_lock_irqsave(&bp->lock, flags);
 		sx_out(bp, CD186x_CCR, CCR_SSCH2);
-- 
1.5.4.2.200.g99e75

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