linux-kernel - Re: sata_mv: Another source code review around exception handling?

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Message-ID: <20151228161054.GR5003@mtj.duckdns.org>
Date:	Mon, 28 Dec 2015 11:10:54 -0500
From:	Tejun Heo <tj@...nel.org>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: sata_mv: Another source code review around exception handling?

Hello,

On Fri, Dec 25, 2015 at 05:00:30PM +0100, SF Markus Elfring wrote:
> The value "-ENOMEM" will be returned if one of these function calls failed.
> Can it be that any system resources (like memory) are not appropriately
> released if any calls of this sequence succeeded before the failure?

Most of those are managed resources (devm_, pcim_ and so on) and are
released automatically when the driver detaches from the device.

> Is the use of the single jump label "err" also suspicious here?

And that exit label deal with resources which aren't managed - some
just haven't grown managed variant yet while others don't fit the
model too well.

Thanks.

-- 
tejun
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