linux-kernel - Re: [PATCH 3/5] ARM: shmobile: R-Mobile: add missing of_node

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Message-ID: <20151012001634.GE20025@verge.net.au>
Date:	Mon, 12 Oct 2015 09:16:34 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	kernel-janitors@...r.kernel.org,
	Magnus Damm <magnus.damm@...il.com>,
	Russell King <linux@....linux.org.uk>,
	linux-sh@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCH 3/5] ARM: shmobile: R-Mobile: add missing of_node_put

On Sat, Oct 10, 2015 at 02:30:52PM +0200, Julia Lawall wrote:
> for_each_child_of_node performs an of_node_get on each iteration, so
> a break out of the loop requires an of_node_put.
> 
> The semantic patch that fixes this problem is as follows
> (http://coccinelle.lip6.fr):
> 
> // <smpl>
> @@
> expression root,e;
> local idexpression child;
> @@
> 
>  for_each_child_of_node(root, child) {
>    ... when != of_node_put(child)
>        when != e = child
> (
>    return child;
> |
> +  of_node_put(child);
> ?  return ...;
> )
>    ...
>  }
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Thanks, I have queued this up as a cleanup for v4.4.
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