linux-kernel - Re: [PATCH RESEND v10 03/11] thermal: Use generic HW-protection shutdown API

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Message-ID: <1c33f42c-4986-b758-da53-631ac0b82c6f@linaro.org>
Date:   Thu, 17 Jun 2021 18:18:26 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
        Matti Vaittinen <mazziesaccount@...il.com>
Cc:     Mark Brown <broonie@...nel.org>, Kees Cook <keescook@...omium.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Guenter Roeck <linux@...ck-us.net>,
        "agross@...nel.org" <agross@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        linux-power <linux-power@...rohmeurope.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        Amit Kucheria <amitk@...nel.org>,
        Matteo Croce <mcroce@...rosoft.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Petr Mladek <pmladek@...e.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Mike Rapoport <rppt@...nel.org>,
        Josef Bacik <josef@...icpanda.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH RESEND v10 03/11] thermal: Use generic HW-protection
 shutdown API

On 03/06/2021 07:41, Matti Vaittinen wrote:
> The hardware shutdown function was exported from kernel/reboot for
> other subsystems to use. Logic is copied from the thermal_core. The
> protection mutex is replaced by an atomic_t to allow calls also from
> an IRQ context. Also the WARN() was replaced by pr_emerg() based on
> discussions here:
> https://lore.kernel.org/lkml/YJuPwAZroVZ%2Fw633@alley/
> and here:
> https://lore.kernel.org/linux-iommu/20210331093104.383705-4-geert+renesas@glider.be/
> 
> Use the exported API instead of implementing own just for the
> thermal_core.
> 
> Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> 

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


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