linux-kernel - Re: [PATCH] rtc: pcf8563: fix uninitialized use warning

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <10094879.uvjB4Q3B81@wuerfel>
Date:	Mon, 08 Sep 2014 17:22:40 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: pcf8563: fix uninitialized use warning

On Monday 08 September 2014 15:02:00 Sergei Shtylyov wrote:
> > diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
> > index 5a197d9dc7e7..3a6f994c4da8 100644
> > --- a/drivers/rtc/rtc-pcf8563.c
> > +++ b/drivers/rtc/rtc-pcf8563.c
> > @@ -167,7 +167,7 @@ static irqreturn_t pcf8563_irq(int irq, void *dev_id)
> >       char pending;
> >
> >       err = pcf8563_get_alarm_mode(pcf8563->client, NULL, &pending);
> > -     if (err < 0)
> > +     if (err)
> >               return err;
> 
>     Returning negative values from the IRQ handler doesn't seem valid.
> Arbitrary positive value aren't good either. Perhaps should return IRQ_NONE 
> instead?

Good point. This is unrelated to the problem I was trying to fix, but it
seems like a good idea to fix both.

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/