linux-kernel - Re: [PATCH 3/5] mt76: fix a leaked reference by adding a missing of_node

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Message-Id: <20190228083905.DB24460F3D@smtp.codeaurora.org>
Date:   Thu, 28 Feb 2019 08:39:05 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Wen Yang <wen.yang99@....com.cn>
Cc:     linus.walleij@...aro.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, alexandre.belloni@...tlin.com,
        UNGLinuxDriver@...rochip.com, nbd@....name,
        lorenzo.bianconi83@...il.com, matthias.bgg@...il.com,
        linux-wireless@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, anirudh@...inx.com,
        John.Linn@...inx.com, michal.simek@...inx.com,
        wang.yi59@....com.cn, Wen Yang <wen.yang99@....com.cn>
Subject: Re: [PATCH 3/5] mt76: fix a leaked reference by adding a missing
 of_node_put

Wen Yang <wen.yang99@....com.cn> wrote:

> The call to of_find_node_by_phandle returns a node pointer with refcount
> incremented thus it must be explicitly decremented after the last
> usage.
> 
> Detected by coccinelle with the following warnings:
> ./drivers/net/wireless/mediatek/mt76/eeprom.c:58:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
> ./drivers/net/wireless/mediatek/mt76/eeprom.c:61:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
> ./drivers/net/wireless/mediatek/mt76/eeprom.c:67:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
> ./drivers/net/wireless/mediatek/mt76/eeprom.c:70:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
> ./drivers/net/wireless/mediatek/mt76/eeprom.c:72:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
> 
> Signed-off-by: Wen Yang <wen.yang99@....com.cn>
> Cc: Felix Fietkau <nbd@....name>
> Cc: Lorenzo Bianconi <lorenzo.bianconi83@...il.com>
> Cc: Kalle Valo <kvalo@...eaurora.org>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Matthias Brugger <matthias.bgg@...il.com>
> Cc: linux-wireless@...r.kernel.org
> Cc: netdev@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-mediatek@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org

Patch applied to wireless-drivers-next.git, thanks.

34e022d8b780 mt76: fix a leaked reference by adding a missing of_node_put

-- 
https://patchwork.kernel.org/patch/10825315/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches