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

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Message-ID: <20150119183057.GI9759@ld-irv-0074>
Date:	Mon, 19 Jan 2015 10:30:57 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
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"

On Mon, Jan 19, 2015 at 07:19:34PM +0100, SF Markus Elfring wrote:
> > 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.

Let's consider them first. We don't ship code that is missing the
implementation details. (At least, we try not to!)

> 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.

I didn't ask "when?"; where?

> > 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.

Then please complete it.

Thanks,
Brian
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