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] [day] [month] [year] [list]

Date:	Mon, 08 Sep 2014 19:40:33 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Arnd Bergmann <arnd@...db.de>, linux-arm-kernel@...ts.infradead.org
CC:	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 9/8/2014 7:22 PM, Arnd Bergmann 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.

    Then it would be good if you fix this issue with a separate patch.

> 	Arnd

WBR, Sergei

--
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/