linux-kernel - Re: [PATCH v3 5/7] rtc: New driver for RTC in Netronix embedded controller

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Message-ID: <20201005073538.g37j3tfc7q4gifdz@pengutronix.de>
Date:   Mon, 5 Oct 2020 09:35:38 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Jonathan Neuschäfer <j.neuschaefer@....net>
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Heiko Stuebner <heiko@...ech.de>, devicetree@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>, linux-rtc@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Daniel Palmer <daniel@...f.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Andreas Kemnade <andreas@...nade.info>,
        NXP Linux Team <linux-imx@....com>,
        linux-pwm@...r.kernel.org, Stephan Gerhold <stephan@...hold.net>,
        allen <allen.chen@....com.tw>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Lubomir Rintel <lkundrak@...sk>,
        Rob Herring <robh+dt@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        linux-arm-kernel@...ts.infradead.org,
        Alessandro Zummo <a.zummo@...ertech.it>,
        linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
        Josua Mayer <josua.mayer@....eu>,
        Shawn Guo <shawnguo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH v3 5/7] rtc: New driver for RTC in Netronix embedded
 controller

Hello Jonathan,

On Sun, Oct 04, 2020 at 03:43:23AM +0200, Jonathan Neuschäfer wrote:
> On Fri, Sep 25, 2020 at 07:44:24AM +0200, Uwe Kleine-König wrote:
> > > +static struct platform_driver ntxec_rtc_driver = {
> > > +	.driver = {
> > > +		.name = "ntxec-rtc",
> > > +	},
> > > +	.probe = ntxec_rtc_probe,
> > 
> > No .remove function?
> 
> I don't think it would serve a purpose in this driver. There are no
> device-specific resources to release (no clocks to unprepare, for
> example).

I had in mind that without a .remove callback the driver cannot detach.
but looking in the code (drivers/base/platform.c) this seems wrong.
So my concern can be considered void.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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