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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Yicong Yang <yangyicong@hisilicon.com>,
	Wei Xu <xuwei5@hisilicon.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Dmitry Osipenko <digetx@gmail.com>,
	Linux I2C <linux-i2c@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linuxarm <linuxarm@huawei.com>
Subject: Re: [PATCH] i2c: I2C_HISI should depend on ARCH_HISI && ACPI
Date: Thu, 15 Apr 2021 11:50:36 +0300
Message-ID: <CAHp75VcFjRBO+0578jWam3+sc24KvKArTtQV+nRCCbV1E++Nsg@mail.gmail.com> (raw)
In-Reply-To: <CAMuHMdWZz6QNQbN53Whjfi122PWesM4_+K0_m=np8L=E+=io6g@mail.gmail.com>

On Thu, Apr 15, 2021 at 3:43 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Wed, Apr 14, 2021 at 9:14 PM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> > On Wed, Apr 14, 2021 at 08:55:21PM +0200, Geert Uytterhoeven wrote:
> > > On Wed, Apr 14, 2021 at 8:18 PM Andy Shevchenko
> > > <andriy.shevchenko@linux.intel.com> wrote:
> > > > On Wed, Apr 14, 2021 at 08:06:18PM +0200, Geert Uytterhoeven wrote:
> > > > > On Wed, Apr 14, 2021 at 11:24 AM Yicong Yang <yangyicong@hisilicon.com> wrote:

...

> > > > > I guess it's still fine to add a dependency on ACPI?
> > > >
> > > > But why?
> > >
> > > Please tell me how/when the driver is used when CONFIG_ACPI=n.
> >
> > I'm not using it at all. Ask the author :-)
> >
> > But if we follow your logic, then we need to mark all the _platform_ drivers
> > for x86 world as ACPI dependent? This sounds ugly.
>
> Do all other x86 platform drivers have (1) an .acpi_match_table[] and
> (2) no other way of instantiating their devices?
> The first driver from the top of my memory I looked at is rtc-cmos:
> it has no .acpi_match_table[], and the rtc-cmos device is instantiated
> from arch/x86/kernel/rtc.c.
>
> For drivers with only an .of_match_table(), and no legacy users
> instantiating platform devices, we do have dependencies on OF.

This is not true. Entire IIO subsystem is an example.

-- 
With Best Regards,
Andy Shevchenko

  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13 12:26 Geert Uytterhoeven
2021-04-13 12:36 ` Andy Shevchenko
2021-04-13 12:48   ` Geert Uytterhoeven
2021-04-13 14:41     ` Andy Shevchenko
2021-04-13 14:44       ` Geert Uytterhoeven
2021-04-13 15:19         ` Andy Shevchenko
2021-04-14  9:19 ` Yicong Yang
2021-04-14 18:06   ` Geert Uytterhoeven
2021-04-14 18:18     ` Andy Shevchenko
2021-04-14 18:55       ` Geert Uytterhoeven
2021-04-14 19:14         ` Andy Shevchenko
2021-04-14 19:21           ` Geert Uytterhoeven
2021-04-15  8:50             ` Andy Shevchenko [this message]
2021-04-19 13:02               ` Geert Uytterhoeven
2021-04-19 13:31                 ` Andy Shevchenko
2021-04-19 13:54                   ` Geert Uytterhoeven
2021-04-19 13:58                     ` Andy Shevchenko
2021-04-19 14:14                       ` Andy Shevchenko
2021-04-19 14:18                         ` Geert Uytterhoeven
2021-04-19 14:27                           ` Andy Shevchenko
2021-04-19 14:15                       ` Geert Uytterhoeven
2021-04-19 14:39                         ` Andy Shevchenko
2021-04-15  8:18     ` Yicong Yang
2021-04-15  9:04       ` Yicong Yang
2021-04-15 10:36         ` Andy Shevchenko

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