linux-kernel - Re: [PATCH 13/15] drivers/clocksource/cyclone.c: add missing iounmap

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Date:	Mon, 23 Jan 2012 16:39:50 -0800
From:	john stultz <johnstul@...ibm.com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	kernel-janitors@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/15] drivers/clocksource/cyclone.c: add missing iounmap

On Thu, 2012-01-12 at 10:55 +0100, Julia Lawall wrote:
> From: Julia Lawall <Julia.Lawall@...6.fr>
> 
> Add missing iounmap in error handling code, in a case where the function
> already preforms iounmap on some other execution path.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression e;
> statement S,S1;
> int ret;
> @@
> e = \(ioremap\|ioremap_nocache\)(...)
> ... when != iounmap(e)
> if (<+...e...+>) S
> ... when any
>     when != iounmap(e)
> *if (...)
>    { ... when != iounmap(e)
>      return ...; }
> ... when any
> iounmap(e);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Looks good. I've just queued it.
Thanks for sending this in!
-john


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