linux-kernel - Re: [PATCH] clk: versatile: Add of_node

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Date:   Sun, 30 Aug 2020 12:07:17 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Sumera Priyadarsini <sylphrenadin@...il.com>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clk: versatile: Add of_node_put() before return statement

On Sat, Aug 29, 2020 at 7:57 PM Sumera Priyadarsini
<sylphrenadin@...il.com> wrote:

> Every iteration of for_each_available_child_of_node() decrements
> the reference count of the previous node, however when control is
> transferred from the middle of the loop, as in the case of a return
> or break or goto, there is no decrement thus ultimately resulting in
> a memory leak.
>
> Fix a potential memory leak in clk-impd1.c by inserting
> of_node_put() before a return statement.
>
> Issue found with Coccinelle.
>
> Signed-off-by: Sumera Priyadarsini <sylphrenadin@...il.com>

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij