Re: [PATCH 1/1 linux-next] affs: add default case in switch

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On Sat, May 2, 2015 at 8:56 PM, Fabian Frederick <fabf@xxxxxxxxx> wrote:
> Fix gcc -Wswitch-default warnings
>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
> ---
>  fs/affs/inode.c | 2 ++
>  fs/affs/namei.c | 3 +++
>  2 files changed, 5 insertions(+)
>
> diff --git a/fs/affs/inode.c b/fs/affs/inode.c
> index 1734950..623398e 100644
> --- a/fs/affs/inode.c
> +++ b/fs/affs/inode.c
> @@ -143,6 +143,8 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
>                 inode->i_op = &affs_symlink_inode_operations;
>                 inode->i_data.a_ops = &affs_symlink_aops;
>                 break;
> +       default:
> +               break;
>         }
>
>         inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec
> diff --git a/fs/affs/namei.c b/fs/affs/namei.c
> index 181e05b..517926d 100644
> --- a/fs/affs/namei.c
> +++ b/fs/affs/namei.c
> @@ -237,6 +237,9 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
>                 //case ST_LINKDIR:
>                 case ST_LINKFILE:
>                         ino = be32_to_cpu(AFFS_TAIL(sb, bh)->original);
> +                       break;
> +               default:
> +                       break;

How can this code path be reached?
If I read your patch correctly it just silences gcc.

If the code can be reached you need to take a proper action of not the
warning is bogus.

-- 
Thanks,
//richard
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