linux-kernel - Re: [PATCH] hwmon (coretemp): Fix build breakage if SMP is undefined

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Message-ID: <20100927114801.GA31757@ericsson.com>
Date:	Mon, 27 Sep 2010 04:48:01 -0700
From:	Guenter Roeck <guenter.roeck@...csson.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Jean Delvare <khali@...ux-fr.org>
Subject: Re: [PATCH] hwmon (coretemp): Fix build breakage if SMP is
 undefined

On Mon, Sep 27, 2010 at 02:25:10AM -0400, Ingo Molnar wrote:
> 
> * Guenter Roeck <guenter.roeck@...csson.com> wrote:
> 
> > Commit e40cc4bdfd4b89813f072f72bd9c7055814d3f0f introduced
> > a build breakage if CONFIG_SMP is undefined. This patch
> > fixes the problem.
> > 
> > Reported-by: Ingo Molnar <mingo@...e.hu>
> > Cc: Fenghua Yu <fenghua.yu@...el.com>
> > Cc: Jean Delvare <khali@...ux-fr.org>
> > Signed-off-by: Guenter Roeck <guenter.roeck@...csson.com>
> > 
> > ---
> >  drivers/hwmon/coretemp.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> > 
> > diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
> > index baa842a..58a3c2d 100644
> > --- a/drivers/hwmon/coretemp.c
> > +++ b/drivers/hwmon/coretemp.c
> > @@ -503,9 +503,11 @@ static void coretemp_device_remove(unsigned int cpu)
> >  		list_del(&p->list);
> >  		mutex_unlock(&pdev_list_mutex);
> >  		kfree(p);
> > +#ifdef CONFIG_SMP
> >  		for_each_cpu(i, cpu_sibling_mask(cpu))
> >  			if (i != cpu && !coretemp_device_add(i))
> >  				break;
> > +#endif
> 
> Wont this result in an 'unused variable i' compiler warning?
> 
Sigh. Yes, of course. Must have been blind when I compiled it. Serves me right, 
for pushing this out in a hurry. You'll see rev2 of the patch in a minute.

Guenter
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