linux-kernel - Re: [PATCH] thermal: core: Check correct temperature for thermal trip notification

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Message-ID: <9fd97bac-d180-14bc-09ce-878575f0cef7@collabora.com>
Date:   Mon, 25 Sep 2023 11:53:47 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     kernel@...labora.com, Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH] thermal: core: Check correct temperature for thermal trip
 notification

Il 22/09/23 21:27, Nícolas F. R. A. Prado ha scritto:
> The thermal trip down notification should be triggered when the
> temperature goes below the trip temperature minus the hysteresis. But
> while the temperature is correctly checked against that, the last
> temperature is instead compared against the trip point temperature. The
> end result is that the notification won't always be triggered, only when
> the temperature happens to drop quick enough so that the last
> temperature was still above the trip point temperature.
> 
> Fix the incorrect check.
> 
> Fixes: 55cdf0a283b8 ("thermal: core: Add notifications call in the framework")
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> 

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>