linux-kernel - Re: [PATCH] fs/fat: fix build warning

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Message-ID: <87pqne1dii.fsf@devron.myhome.or.jp>
Date:	Fri, 20 May 2011 08:23:01 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Linus Walleij <linus.walleij@...ricsson.com>
Cc:	<linux-kernel@...r.kernel.org>, Lee Jones <lee.jones@...aro.org>,
	Jonas Aberg <jonas.aberg@...ricsson.com>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH] fs/fat: fix build warning

Linus Walleij <linus.walleij@...ricsson.com> writes:

> From: Jonas Aberg <jonas.aberg@...ricsson.com>
>
> This fixes a compile warning (unititialized variable) in
> the fat filesystem code.
>
> Signed-off-by: Jonas Aberg <jonas.aberg@...ricsson.com>
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  fs/fat/dir.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/fs/fat/dir.c b/fs/fat/dir.c
> index ee42b9e..aace9be 100644
> --- a/fs/fat/dir.c
> +++ b/fs/fat/dir.c
> @@ -1229,7 +1229,7 @@ int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
>  	struct super_block *sb = dir->i_sb;
>  	struct msdos_sb_info *sbi = MSDOS_SB(sb);
>  	struct buffer_head *bh, *prev, *bhs[3]; /* 32*slots (672bytes) */
> -	struct msdos_dir_entry *de;
> +	struct msdos_dir_entry *de = NULL;
>  	int err, free_slots, i, nr_bhs;
>  	loff_t pos, i_pos;

	struct msdos_dir_entry *uninitialized_var(de);

IIRC, x86 gcc doesn't warn it. Does uninitialized_var(de) make your gcc
version silent? If so, I'd like to change it like this.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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