linux-kernel - Re: [PATCH 2/3] thermal: of: Fix OF node leak in thermal_of_zone

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Message-ID: <133ea087-a5e9-48ca-bb89-33f41220276f@linaro.org>
Date: Thu, 22 Aug 2024 18:10:40 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Zhang Rui <rui.zhang@...el.com>,
 Lukasz Luba <lukasz.luba@....com>, linux-pm@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org
Subject: Re: [PATCH 2/3] thermal: of: Fix OF node leak in
 thermal_of_zone_register()

On 14/08/2024 21:58, Krzysztof Kozlowski wrote:
> thermal_of_zone_register() calls of_thermal_zone_find() which will
> iterate over OF nodes with for_each_available_child_of_node() to find
> matching thermal zone node.  When it finds such, it exits the loop and
> returns the node.  Prematurely ending for_each_available_child_of_node()
> loops requires dropping OF node reference, thus success of
> of_thermal_zone_find() means that caller must drop the reference.
> 
> Fixes: 3fd6d6e2b4e8 ("thermal/of: Rework the thermal device tree initialization")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---

Reviewed-by: Daniel Lezcano <daniel.lezcano@...aro.org>

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