linux-kernel - Re: linux-next: build warning after merge of the tip tree

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Message-Id: <20100903121201.336c4ba8.sfr@canb.auug.org.au>
Date:	Fri, 3 Sep 2010 12:12:01 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Haicheng Li <haicheng.li@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Wu Fengguang <fengguang.wu@...el.com>
Subject: Re: linux-next: build warning after merge of the tip tree

On Fri, 3 Sep 2010 12:10:23 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> produced this warning:
> 
> arch/x86/mm/init_64.c: In function 'kernel_physical_mapping_init':
> arch/x86/mm/init_64.c:601: warning: 'addr' may be used uninitialized in this function
> 
> The code does look suspicious ... 'addr' gets declared and then passed to
> a function, but is not set anywhere ...

Forgot to say:

Introduced by commit 9b861528a8012e7bc4d1f7bae07395b225331477 ("x86-64,
mem: Update all PGDs for direct mapping and vmemmap mapping changes").

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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