linux-kernel - Re: [PATCH] MTD: Deletion of checks before the function call "iounmap"

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Message-ID: <54BD4AB6.70708@users.sourceforge.net>
Date:	Mon, 19 Jan 2015 19:19:34 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Brian Norris <computersforpeace@...il.com>
CC:	David Woodhouse <dwmw2@...radead.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	linux-mtd@...ts.infradead.org, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] MTD: Deletion of checks before the function call "iounmap"

> Anyway, I'm essentially saying that I'd like to be 100% sure we have a
> guarantee before dropping all these.

You can not be absolutely sure. There are various implementation details
which will eventually need further considerations.

I hope that a reasonable confidence can be achieved here.

>> This issue was detected by using the Coccinelle software.
> 
> What script?

I published scripts for static source code analysis in March 2004.

> Hand-rolled I guess?

An extended version found some update candidates in source files for Linux
according to the software development status of "next-20141226".

My approach is still incomplete at the moment.

Regards,
Markus
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