linux-kernel - Re: [PATCH 4/4] ARM: sunxi: fix a leaked reference by adding missing of_node

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Message-ID: <20190305115912.bprjr3hitdmfnmrw@flea>
Date:   Tue, 5 Mar 2019 12:59:12 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Wen Yang <wen.yang99@....com.cn>
Cc:     linux-kernel@...r.kernel.org, wang.yi59@....com.cn,
        Chen-Yu Tsai <wens@...e.org>,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/4] ARM: sunxi: fix a leaked reference by adding missing
 of_node_put

On Tue, Mar 05, 2019 at 07:32:57PM +0800, Wen Yang wrote:
> The call to of_get_next_child returns a node pointer with refcount
> incremented thus it must be explicitly decremented after the last
> usage.
> 
> Detected by coccinelle with the following warnings:
> ./arch/arm/mach-sunxi/mc_smp.c:110:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 97, but without a corresponding object release within this functio
> ./arch/arm/mach-sunxi/platsmp.c:138:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 129, but without a corresponding object release within this function
> 
> Signed-off-by: Wen Yang <wen.yang99@....com.cn>
> Cc: Maxime Ripard <maxime.ripard@...tlin.com>
> Cc: Chen-Yu Tsai <wens@...e.org>
> Cc: Russell King <linux@...linux.org.uk>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org (open list)

Applied, thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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