linux-kernel - [PATCH 05/06][RESEND] Fix compilation warning for arch/x86/kernel/apm

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Date:	Tue, 21 Jul 2009 08:02:27 +0530
From:	Subrata Modak <subrata@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>, linux-laptop@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Sachin P Sant <sachinp@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	David Howells <dhowells@...hat.com>,
	Subrata Modak <subrata@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 05/06][RESEND] Fix compilation warning for arch/x86/kernel/apm_32.c

The following fix was initially inspired by David Howells fix few days back:
http://lkml.org/lkml/2009/7/9/109,

However, Ingo disapproves such fixes as it's dangerous - in something as
performance-uncritical. So, initialize 'err' to '0' to work around a GCC false 
positive warning:
http://lkml.org/lkml/2009/7/18/89,

Signed-off-by: Subrata Modak<subrata@...ux.vnet.ibm.com>
---

--- a/arch/x86/kernel/apm_32.c	2009-06-15 07:50:51.000000000 +0530
+++ b/arch/x86/kernel/apm_32.c	2009-07-15 06:43:59.000000000 +0530
@@ -811,7 +811,7 @@ static int apm_do_idle(void)
 	u8 ret = 0;
 	int idled = 0;
 	int polling;
-	int err;
+	int err = 0;
 
 	polling = !!(current_thread_info()->status & TS_POLLING);
 	if (polling) {

---
Regards--
Subrata

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