linux-kernel - Re: [PATCH v3] ARM: rockchip: fix a leaked reference by adding missing of_node

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Message-ID: <5474132.bFrQNdgMoI@phil>
Date:   Sun, 28 Apr 2019 12:46:13 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Wen Yang <wen.yang99@....com.cn>
Cc:     linux-kernel@...r.kernel.org, wang.yi59@....com.cn,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v3] ARM: rockchip: fix a leaked reference by adding missing of_node_put

Am Freitag, 26. April 2019, 09:08:08 CEST schrieb Wen Yang:
> 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-rockchip/pm.c:269:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 259, but without a corresponding object release within this function.
> ./arch/arm/mach-rockchip/pm.c:275:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 259, but without a corresponding object release within this function
> ./arch/arm/mach-rockchip/platsmp.c:281:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 272, but without a corresponding object release within this function.
> ./arch/arm/mach-rockchip/platsmp.c:285:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 272, but without a corresponding object release within this function.
> ./arch/arm/mach-rockchip/platsmp.c:289:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 272, but without a corresponding object release within this function.
> ./arch/arm/mach-rockchip/platsmp.c:303:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 294, but without a corresponding object release within this function.
> 
> Signed-off-by: Wen Yang <wen.yang99@....com.cn>
> Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
> Suggested-by: Heiko Stuebner <heiko@...ech.de>
> Cc: Russell King <linux@...linux.org.uk>
> Cc: Heiko Stuebner <heiko@...ech.de>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-rockchip@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org

queued for 5.3 (too late for 5.2)

Thanks
Heiko