linux-kernel - Re: [PATCH] udf: fix sparse warnings

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Date:	Mon, 1 Dec 2008 15:55:58 +0100
From:	"Hannes Eder" <hannes@...neseder.net>
To:	"Jan Kara" <jack@...e.cz>
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	trivial@...nel.org
Subject: Re: [PATCH] udf: fix sparse warnings

On Mon, Dec 1, 2008 at 1:09 PM, Jan Kara <jack@...e.cz> wrote:
> On Thu 27-11-08 23:12:55, Hannes Eder wrote:
>> Fix this sparse warnings:
>>
>>   fs/udf/balloc.c:843:3: warning: returning void-valued expression
>>   fs/udf/balloc.c:847:3: warning: returning void-valued expression
>>   fs/udf/balloc.c:851:3: warning: returning void-valued expression
>>   fs/udf/balloc.c:855:3: warning: returning void-valued expression
>>
>> Signed-off-by: Hannes Eder <hannes@...neseder.net>
>  Thanks for the patch. But when we are at it, I'd rather go for the
> following change:
>
> From f3facf9a4a60bba9f1fa0c779fc441c6aff90eb4 Mon Sep 17 00:00:00 2001
> From: Jan Kara <jack@...e.cz>
> Date: Mon, 1 Dec 2008 13:06:10 +0100
> Subject: [PATCH] udf: fix sparse warnings:
>
> Fix sparse warnings:
>
>  fs/udf/balloc.c:843:3: warning: returning void-valued expression
>  fs/udf/balloc.c:847:3: warning: returning void-valued expression
>  fs/udf/balloc.c:851:3: warning: returning void-valued expression
>  fs/udf/balloc.c:855:3: warning: returning void-valued expression
>
> Reported-by: Hannes Eder <hannes@...neseder.net>
> Signed-off-by: Jan Kara <jack@...e.cz>
> ---
>  fs/udf/balloc.c |   23 +++++++++--------------
>  1 files changed, 9 insertions(+), 14 deletions(-)
>
> diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
> index c0e87db..cde1a0d 100644
> --- a/fs/udf/balloc.c
> +++ b/fs/udf/balloc.c
> @@ -840,24 +840,19 @@ void udf_free_blocks(struct super_block *sb, struct inode *inode,
>        struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
>
>        if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) {
> -               return udf_bitmap_free_blocks(sb, inode,
> -                                             map->s_uspace.s_bitmap,
> -                                             bloc, offset, count);
> +               udf_bitmap_free_blocks(sb, inode, map->s_uspace.s_bitmap,
> +                                      bloc, offset, count);
>        } else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) {
> -               return udf_table_free_blocks(sb, inode,
> -                                            map->s_uspace.s_table,
> -                                            bloc, offset, count);
> +               udf_table_free_blocks(sb, inode, map->s_uspace.s_table,
> +                                     bloc, offset, count);
>        } else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) {
> -               return udf_bitmap_free_blocks(sb, inode,
> -                                             map->s_fspace.s_bitmap,
> -                                             bloc, offset, count);
> +               udf_bitmap_free_blocks(sb, inode, map->s_fspace.s_bitmap,
> +                                      bloc, offset, count);
>        } else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) {
> -               return udf_table_free_blocks(sb, inode,
> -                                            map->s_fspace.s_table,
> -                                            bloc, offset, count);
> -       } else {
> -               return;
> +               udf_table_free_blocks(sb, inode, map->s_fspace.s_table,
> +                                     bloc, offset, count);
>        }
> +       return;
>  }
>
>  inline int udf_prealloc_blocks(struct super_block *sb,
> --
> 1.6.0.4

I prefer your version.  I though about it as well, but then tried to
do kind of  'minimal change' patch, and leave the control flow as is.

Hannes
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