linux-kernel - Re: [PATCH 2/2] Thermal:Remove usless if(!result) before return tz

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Message-ID: <20141021114949.GA3465@developer>
Date:	Tue, 21 Oct 2014 07:49:51 -0400
From:	Eduardo Valentin <edubezval@...il.com>
To:	Yao Dongdong <yaodongdong@...wei.com>
Cc:	Zhang Rui <rui.zhang@...el.com>, linux-pm@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] Thermal:Remove usless if(!result) before return tz

Hello Yao,

On Tue, Oct 21, 2014 at 11:34:37AM +0800, Yao Dongdong wrote:
> 
> On 2014/10/20 20:10, Eduardo Valentin wrote:
> > Hello Yao
> >
> > On Mon, Oct 20, 2014 at 04:27:59PM +0800, Yao Dongdong wrote:
> >> result is always zero when comes here.
> >>
> >> Signed-off-by:yaodongdong@...wei.com
> >>
> >> ---
> >>  drivers/thermal/thermal_core.c | 3 +--
> >>  1 file changed, 1 insertion(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> >> index 5b7d466..19cac8e 100644
> >> --- a/drivers/thermal/thermal_core.c
> >> +++ b/drivers/thermal/thermal_core.c
> >> @@ -1568,8 +1568,7 @@ struct thermal_zone_device *thermal_zone_device_register(const char *type,
> >>
> >>     thermal_zone_device_update(tz);
> >>
> >> -   if (!result)
> >> -       return tz;
> >> +   return tz;
> >>
> > Adding a return here will make the resource release below not reachable
> > in the fail path.
> 
> But all fails above followed a "goto unregister", so i think it must be successful when come here.

Yes, I see your point. Agreed.

Acked-by: Eduardo Valentin <edubezval@...il.com>

> 
> Thanks.
> 
> >>  unregister:
> >>     release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
> >> --
> >> 1.8.0.1
> >>
> >>
> 
> 

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