linux-kernel - Re: [PATCH] livepatch: match return value to function signature

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Date:	Mon, 11 May 2015 10:24:42 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Nicholas Mc Guire <hofrat@...dl.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>
CC:	Seth Jennings <sjenning@...hat.com>, Jiri Kosina <jkosina@...e.cz>,
	Vojtech Pavlik <vojtech@...e.cz>,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] livepatch: match return value to function signature

On 05/11/2015, 07:52 AM, Nicholas Mc Guire wrote:
> klp_initialized() should return bool but is actually returning 
> struct kobject * - convert it to a boolean explicitly.
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>

Reviewed-by: Jiri Slaby <jslaby@...e.cz>

Thanks.

> ---
> 
> static code checking was not happy with
>  ./kernel/livepatch/core.c:131 WARNING: return of wrong type
>                                bool != struct kobject *
> 
> This adds !! to explicitly convert to boolean type.
> 
> Patch was compile tested with x86_64_defconfig
> 
> patch is against 4.1-rc2 (localversion-next is -next-20150508)
> 
>  kernel/livepatch/core.c     |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
> index 0e7c23c..c0ae3d8 100644
> --- a/kernel/livepatch/core.c
> +++ b/kernel/livepatch/core.c
> @@ -128,7 +128,7 @@ static bool klp_is_patch_registered(struct klp_patch *patch)
>  
>  static bool klp_initialized(void)
>  {
> -	return klp_root_kobj;
> +	return !!klp_root_kobj;
>  }
>  
>  struct klp_find_arg {
> 


-- 
js
suse labs
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