linux-kernel - Re: [PATCH] drivers/ata/sata_via.c - Eliminate "may be used uninitialized" warning

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Message-Id: <1207519207.1803.60.camel@localhost>
Date:	Sun, 06 Apr 2008 15:00:07 -0700
From:	Joe Perches <joe@...ches.com>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	Jeff Garzik <jgarzik@...ox.com>,
	linux-ide <linux-ide@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/ata/sata_via.c - Eliminate "may be used
	uninitialized" warning

On Mon, 2008-04-07 at 00:50 +0300, Adrian Bunk wrote:
> On Sun, Apr 06, 2008 at 02:45:20PM -0700, Joe Perches wrote:
> > Called by svia_init_one with a temporary,
> > so there's no effective code change.
> I'm not getting any warning here.
> Are you using an older gcc?

Yes.  Slightly less than 4.3.0

$ gcc --version
gcc (GCC) 4.2.2 20071128 (prerelease) (4.2.2-3.1mdv2008.0)

$ git-show
commit 6fdf5e67fe8d3c83500dad9acae985132c2459a3
Merge: abd24df... e64a3cf...
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Fri Apr 4 15:09:44 2008 -0700

    Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus
    
    * 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus:
      [MIPS] Make KGDB compile on UP
      [MIPS] Pb1200: Fix header breakage

$ make defconfig
[]
$ make clean
[]
$ make drivers/ata/sata_via.o
[]
  CC      drivers/ata/sata_via.o
drivers/ata/sata_via.c: In function ‘svia_init_one’:
drivers/ata/sata_via.c:504: warning: ‘host’ may be used uninitialized in this function


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