From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        bcm-kernel-feedback-list@broadcom.com,
        Thomas Pugliese <thomas.pugliese@gmail.com>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Peter Griffin <peter.griffin@linaro.org>,
        Jonathan Richardson <jonathar@broadcom.com>,
        Anatol Pomazau <anatol@google.com>, Ray Jui <rjui@broadcom.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Arun Ramamurthy <arun.ramamurthy@broadcom.com>,
        Dmitry Torokhov <dtor@google.com>, David Mosberger <davidm@egauge.net>,
        Gregory CLEMENT <gregory.clement@free-electrons.com>,
        Kevin Hao <haokexin@gmail.com>, Paul Bolle <pebolle@tiscali.nl>,
        Mathias Nyman <mathias.nyman@linux.intel.com>,
        Scott Branden <sbranden@broadcom.com>, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, Felipe Balbi <balbi@ti.com>,
        Tony Prisk <linux@prisktech.co.nz>
Subject: Re: [PATCHv2 2/3] usb: ehci-platform: Use devm_of_phy_get_by_index
Date: Tue, 14 Apr 2015 15:17:30 +0200
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On Tuesday 14 April 2015 14:37:37 Greg Kroah-Hartman wrote:
> On Tue, Apr 14, 2015 at 01:33:08PM +0200, Arnd Bergmann wrote:
> > This is true, but all other drivers do the same for GENERIC_PHY at the
> > moment. If this one gets changed, we should probably apply the same
> > solution to all current users and fix them consistently.
> > 
> > We can do one of these two:
> > 
> > a) make sure that the framework has 'static inline' stubs that let you
> >    build all drivers using it when the framework itself is disabled.
> 
> Yes, please do that.
> 
> > b) change the drivers using it to 'depends on', and make GENERIC_PHY
> >    itself a hidden option without a Kconfig prompt.
> 
> Then how could GENERIC_PHY ever get set?

Right now, every driver that provides a phy uses 'select GENERIC_PHY',
and they would have to keep doing that. This is not unlike what we
do for other silent symbols like MFD_CORE, REGMAP_I2C, or PINCTRL,
and it's not as problematic as 'select' on a user-visible option,
or (worst) mixing 'select' and 'depends on'.

	Arnd
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