linux-kernel - [patch] genirq: incorrect unlock in __setup

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Date:	Thu, 17 Mar 2011 14:43:07 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] genirq: incorrect unlock in __setup_irq()

goto out_thread is called before we take the lock.  It causes a gcc
warning: "kernel/irq/manage.c:858: warning: ‘flags’ may be used
uninitialized in this function"

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index acd599a..cdcdf13 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1065,9 +1065,9 @@ mismatch:
 
 out_mask:
 	free_cpumask_var(mask);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
 out_thread:
-	raw_spin_unlock_irqrestore(&desc->lock, flags);
 	if (new->thread) {
 		struct task_struct *t = new->thread;
 
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