linux-kernel - Re: [PATCH] libata: Shut up annoying native

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Message-ID: <20121220150423.GC26635@liondog.tnic>
Date:	Thu, 20 Dec 2012 16:04:23 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org
Subject: Re: [PATCH] libata: Shut up annoying native_sectors warning

On Thu, Dec 20, 2012 at 01:01:59PM +0000, Alan Cox wrote:
> Net lose IMHO - better to file a gcc bug report

Ok, I'll try that. Want on CC?

The good thing is, it is a new issue in 4.7 since it doesn't trigger
with 4.6:

$  make CC=gcc-4.6 drivers/ata/libata-core.o
make[1]: Nothing to be done for `all'.
make[1]: Nothing to be done for `relocs'.
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    scripts/checksyscalls.sh
  CC      drivers/ata/libata-core.o

vs

$  make CC=gcc-4.7 drivers/ata/libata-core.o
make[1]: Nothing to be done for `all'.
make[1]: Nothing to be done for `relocs'.
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CC      kernel/bounds.s
  GEN     include/generated/bounds.h
  CC      arch/x86/kernel/asm-offsets.s
  GEN     include/generated/asm-offsets.h
  CALL    scripts/checksyscalls.sh
  CC      scripts/mod/empty.o
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/mod/modpost
  CC      drivers/ata/libata-core.o
drivers/ata/libata-core.c: In function ‘ata_hpa_resize’:
drivers/ata/libata-core.c:1397:3: warning: ‘native_sectors’ may be used uninitialized in this function [-Wmaybe-uninitialized]

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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