linux-kernel - Re: [PATCH v2 2/2] iio: adc: ad7173: add AD7173 driver

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Date:   Tue, 3 Oct 2023 13:45:00 +0300
From:   Andy Shevchenko <andy@...nel.org>
To:     Ceclan Dumitru-Ioan <mitrutzceclan@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>, linus.walleij@...aro.org,
        brgl@...ev.pl, linux-gpio@...r.kernel.org,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Arnd Bergmann <arnd@...db.de>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Leonard Göhrs <l.goehrs@...gutronix.de>,
        Mike Looijmans <mike.looijmans@...ic.nl>,
        Haibo Chen <haibo.chen@....com>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Ceclan Dumitru <dumitru.ceclan@...log.com>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] iio: adc: ad7173: add AD7173 driver

On Tue, Oct 03, 2023 at 01:33:36PM +0300, Ceclan Dumitru-Ioan wrote:
> On 9/30/23 17:05, Jonathan Cameron wrote:
> > On Thu, 28 Sep 2023 15:54:43 +0300
> > Dumitru Ceclan <mitrutzceclan@...il.com> wrote>> +config AD7173
> >> +	tristate "Analog Devices AD7173 driver"
> >> +	depends on SPI_MASTER
> >> +	select AD_SIGMA_DELTA
> >> +	select GPIO_REGMAP
> > If you are selecting it, why does it have if guards in the driver.
> > I prefer the select here, so drop this if guards.
> 
> From what i checked, selecting GPIO_REGMAP does not select GPIOLIB but only REGMAP.
> 
> Also, in the thread from V1 Arnd Bergmann suggested:
> 	" I think the best way to handle these is to remove both
> 	 the 'select' and the #ifdef in the driver and instead use
> 	 'if (IS_ENABLED(CONFIG_GPIOLIB))' to handle optional gpio
> 	 providers in the code. "

Why not simply to be dependent on GPIOLIB like other drivers do in this folder?


-- 
With Best Regards,
Andy Shevchenko