netdev - Re: [PATCH v4 02/11] thermal: Store thermal mode in a dedicated enum

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Message-ID: <6829f088-d816-fa7c-da97-cb5fd082d69d@roeck-us.net>
Date:   Fri, 29 May 2020 08:34:08 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Cc:     linux-pm@...r.kernel.org, linux-acpi@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Heiko Stuebner <heiko@...ech.de>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Vishal Kulkarni <vishal@...lsio.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        kernel@...labora.com, Fabio Estevam <festevam@...il.com>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Allison Randal <allison@...utok.net>,
        NXP Linux Team <linux-imx@....com>,
        Darren Hart <dvhart@...radead.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Len Brown <lenb@...nel.org>,
        Johannes Berg <johannes.berg@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
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        Thomas Gleixner <tglx@...utronix.de>,
        Kalle Valo <kvalo@...eaurora.org>,
        Support Opensource <support.opensource@...semi.com>,
        Enrico Weigelt <info@...ux.net>,
        Peter Kaestle <peter@...e.net>,
        Sebastian Reichel <sre@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Shawn Guo <shawnguo@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Andy Shevchenko <andy@...radead.org>
Subject: Re: [PATCH v4 02/11] thermal: Store thermal mode in a dedicated enum

On 5/29/20 8:13 AM, Andrzej Pietrasiewicz wrote:
> Hi Guenter,
> 
> W dniu 29.05.2020 o 16:48, Guenter Roeck pisze:
>> On Thu, May 28, 2020 at 09:20:42PM +0200, Andrzej Pietrasiewicz wrote:
>>> Prepare for storing mode in struct thermal_zone_device.
>>>
>>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
>>> ---
>>>   drivers/acpi/thermal.c                        | 27 +++++++++----------
>>>   drivers/platform/x86/acerhdf.c                |  8 ++++--
>>>   .../intel/int340x_thermal/int3400_thermal.c   | 18 +++++--------
>>>   3 files changed, 25 insertions(+), 28 deletions(-)
> 
> <snip>
> 
>>> @@ -544,27 +543,25 @@ static int thermal_set_mode(struct thermal_zone_device *thermal,
>>>                   enum thermal_device_mode mode)
>>>   {
>>>       struct acpi_thermal *tz = thermal->devdata;
>>> -    int enable;
>>>         if (!tz)
>>>           return -EINVAL;
>>>   +    if (mode != THERMAL_DEVICE_DISABLED &&
>>> +        mode != THERMAL_DEVICE_ENABLED)
>>> +        return -EINVAL;
>>
>> Personally I find this check unnecessary: The enum has no other values,
>> and it is verifyable that the callers provide the enum and not some other
>> value.
> 
> It is getting removed in PATCH 10/11.
> 
> 
>>> +    if (mode != THERMAL_DEVICE_ENABLED &&
>>> +        mode != THERMAL_DEVICE_DISABLED)
>>>           return -EINVAL;
>>
>> Same as above.
> 
> ditto.

Hmm, I think that would be better done with this patch. But I guess
that is a bit of PoV, so

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

since I don't have any other objections/observations.

Guenter