linux-kernel - RE: [PATCH V3 1/7] firmware: imx: Add stubs for !CONFIG_IMX

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Date:   Mon, 16 Mar 2020 10:18:21 +0000
From:   Anson Huang <anson.huang@....com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
CC:     Shawn Guo <shawnguo@...nel.org>, Peng Fan <peng.fan@....com>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "amit.kucheria@...durent.com" <amit.kucheria@...durent.com>,
        "wim@...ux-watchdog.org" <wim@...ux-watchdog.org>,
        "linux@...ck-us.net" <linux@...ck-us.net>,
        Daniel Baluta <daniel.baluta@....com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux@...pel-privat.de" <linux@...pel-privat.de>,
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        "andriy.shevchenko@...ux.intel.com" 
        <andriy.shevchenko@...ux.intel.com>,
        "arnd@...db.de" <arnd@...db.de>,
        "ronald@...ovation.ch" <ronald@...ovation.ch>,
        "krzk@...nel.org" <krzk@...nel.org>,
        "robh@...nel.org" <robh@...nel.org>,
        Leonard Crestez <leonard.crestez@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH V3 1/7] firmware: imx: Add stubs for !CONFIG_IMX_SCU case



> Subject: Re: [PATCH V3 1/7] firmware: imx: Add stubs for !CONFIG_IMX_SCU
> case
> 
> On 16/03/2020 09:40:52+0000, Anson Huang wrote:
> > > Why is that an issue? If they don't have IMX_SCU selected, then the
> > > other SCU driver are not selected either, having stubs doesn't
> > > change that you will have to select at least one option. Please
> > > explain what is the issue that is not solved here.
> >
> > OK, what I thought is even without IMX_SCU selected, other SCU drivers
> > still can be selected for build test after adding "COMPILE_TEST" to
> > the kconfig, like below, if without IMX_SCU API stubs, the
> > "COMPILE_TEST" can NOT be added to SCU drivers to enable build test, so I
> think the IMX_SCU API stubs should be added?
> >
> 
> No they shouldn't because there is not point adding COMPILE_TEST to the
> SCU drivers. We don't add COMPILE_TEST to all the drivers and add stubs to
> all the subsystems. E.g there is no point trying to compile an I2C driver if the
> I2C core is not enabled.

OK, make sense.

Thanks,
Anson