linux-kernel - Re: [PATCH] misc: ioc4: fix variable may be used uninitialized warning

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Message-ID: <CA+V-a8tww3bt7rhMT8Bxn0dwyg4qQTeVKbAKKJxh__zXrKrewA@mail.gmail.com>
Date:	Mon, 8 Dec 2014 13:34:20 +0000
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Richard Leitner <dev@...l1n.net>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] misc: ioc4: fix variable may be used uninitialized warning

On Mon, Dec 8, 2014 at 1:18 PM, Richard Leitner <dev@...l1n.net> wrote:
> On Mon, 08 Dec 2014 13:42:47 +0100
> Arnd Bergmann <arnd@...db.de> wrote:
>
>> On Monday 08 December 2014 13:27:20 Richard Leitner wrote:
>> >
>> > As far as I can tell 'start' cannot really be used uninitialized
>> > here, but for the sanity of gcc output explicitly initialize it.
>> > Same goes for the 'end' variable.
>>
>> Prabhakar Lad also sent a patch for this already, which was lacking
>> a good patch description. Your patch does this slightly better but
>> still fails to explain how you concluded it was safe and you don't
>> really explain why you initialize the 'end' variable that we don't
>> even get a warning about.
>
> Oops, I'm sorry, I haven't seen the patch and the answers to it.
>
> According to the comments by Andrew a simplification of this code
> section would be nice. I think it should be possible to do this in a
> way that the initialize-to-zero won't be needed anymore.
>
> Prabhakar Lad, are you working on this already?
> If not I'll take a look at it.
>
Definitely you can go ahead, I am busy with other stuff.

Thanks,
--Prabhakar Lad
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