linux-kernel - Re: [PATCH] gpu: host1x: bus: Add missing of_node

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Date:	Mon, 25 Jan 2016 15:02:28 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Amitoj Kaur Chawla <amitoj1606@...il.com>
Cc:	tbergstrom@...dia.com, dri-devel@...ts.freedesktop.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
	julia.lawall@...6.fr
Subject: Re: [PATCH] gpu: host1x: bus: Add missing of_node_put

On Sun, Jan 24, 2016 at 10:02:10PM +0530, Amitoj Kaur Chawla wrote:
> for_each_child_of_node performs an of_node_get on each iteration, so
> to break out of the loop an of_node_put is required.
> 
> Found using Coccinelle. The semantic patch used for this is as follows:
> 
> // <smpl>
> @@
> expression e;
> local idexpression n;
> @@
> 
>  for_each_child_of_node(..., n) {
>    ... when != of_node_put(n)
>        when != e = n
> (
>    return n;
> |
> +  of_node_put(n);
> ?  return ...;
> )
>    ...
>  }
> // </smpl>
> 
> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@...il.com>
> ---
>  drivers/gpu/host1x/bus.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Applied, thanks.

Thierry

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