linux-kernel - Re: [PATCH][Trivial] lib/kobject.c: Remove redundant check in populate

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Date:	Mon, 23 Apr 2012 13:43:22 -0700
From:	greg <gregkh@...uxfoundation.org>
To:	yan <clouds.yan@...il.com>
Cc:	kernel <linux-kernel@...r.kernel.org>,
	message <message.get@...il.com>
Subject: Re: [PATCH][Trivial] lib/kobject.c: Remove redundant check in
 populate_dir

On Sat, Apr 21, 2012 at 06:18:25PM +0800, yan wrote:
> create_dir will call sysfs_create_dir and then populate_dir.
> If ktype of kobject is null, sysfs_craete_dir will lead to
> oops first. There is no need to check ktype in populate_dir.
> 
> Signed-off-by: Yan Hong <clouds.yan@...il.com>
> ---
>  lib/kobject.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/lib/kobject.c b/lib/kobject.c
> index bc05922..85d5e9b 100644
> --- a/lib/kobject.c
> +++ b/lib/kobject.c
> @@ -34,7 +34,7 @@ static int populate_dir(struct kobject *kobj)
>  	int error = 0;
>  	int i;
>  
> -	if (t && t->default_attrs) {
> +	if (t->default_attrs) {

I don't know, I think I'd like to keep this check for now, as it was put
there for a reason.  Yes, it's a reason lost to the sands of time, but
is it costing us anything if it is still there?

greg k-h
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