linux-kernel - Re: linux-next: build warning after merge of the rtc tree

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Message-ID: <20160711212340.GS22202@piout.net>
Date:	Mon, 11 Jul 2016 23:23:40 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Uwe Kleine-König <uwe@...ine-koenig.org>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build warning after merge of the rtc tree

On 11/07/2016 at 10:23:51 +0200, Uwe Kleine-König wrote :
> Hello,
> 
> On Mon, Jul 11, 2016 at 06:12:08PM +1000, Stephen Rothwell wrote:
> > After merging the rtc tree, today's linux-next build (x86 64_allmodconfig)
> > produced this warning:
> > 
> > drivers/rtc/rtc-isl12057.c: In function 'isl12057_rtc_read_alarm':
> > drivers/rtc/rtc-isl12057.c:249:26: warning: unused variable 'alarm_secs' [-Wunused-variable]
> >   unsigned long rtc_secs, alarm_secs;
> >                           ^
> > drivers/rtc/rtc-isl12057.c:249:16: warning: unused variable 'rtc_secs' [-Wunused-variable]
> >   unsigned long rtc_secs, alarm_secs;
> >                 ^
> > drivers/rtc/rtc-isl12057.c:248:18: warning: unused variable 'rtc_tm' [-Wunused-variable]
> >   struct rtc_time rtc_tm, *alarm_tm = &alarm->time;
> >                   ^
> > 
> > Introduced by commit
> > 
> >   4e30a585a343 ("rtc: isl12057: let the rtc core interpret the partial alarm")
> 
> Thanks for catching that. The obvious fix is:
> 
> diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c
> index e0245fc6205e..0e7f0f52bfe4 100644
> --- a/drivers/rtc/rtc-isl12057.c
> +++ b/drivers/rtc/rtc-isl12057.c
> @@ -245,8 +245,7 @@ static int isl12057_rtc_update_alarm(struct device *dev, int enable)
>  static int isl12057_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
>  {
>  	struct isl12057_rtc_data *data = dev_get_drvdata(dev);
> -	struct rtc_time rtc_tm, *alarm_tm = &alarm->time;
> -	unsigned long rtc_secs, alarm_secs;
> +	struct rtc_time *alarm_tm = &alarm->time;
>  	u8 regs[ISL12057_A1_SEC_LEN];
>  	unsigned int ir;
>  	int ret;
> 
> Alexandre: Do you fixup, or should I send a proper patch for that?
> 

I fixed it up. I shouldn't have missed that one...

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com