linux-kernel - Re: [PATCH] iio:accel:dmard06: Optimize when CONFIG

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Message-ID: <CAHp75VcGopXaksmvXP_vMM-iGK0o_g5Fw_F5zvH+PXcCUx_cDQ@mail.gmail.com>
Date:   Fri, 26 Aug 2022 18:18:20 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jean Delvare <jdelvare@...e.de>
Cc:     linux-iio <linux-iio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH] iio:accel:dmard06: Optimize when CONFIG_OF isn't set

On Fri, Aug 26, 2022 at 1:46 PM Jean Delvare <jdelvare@...e.de> wrote:
> On Thu, 25 Aug 2022 23:12:43 +0300, Andy Shevchenko wrote:
> > On Thu, Aug 25, 2022 at 3:54 PM Jean Delvare <jdelvare@...e.de> wrote:

...

> Now I'm curious, is there a well-defined subset of device names that
> can be found in an ACPI table? If not, does that mean that any driver
> with an OF entry could match,

Yes, anything can be matched by ACPI with any of the compatible strings.

> therefore of_match_ptr() should be
> removed from the kernel entirely?

In most cases yes, like for discrete components that can be connected
to any SoC on ACPI/DT/whatever platform. But for some cases it still
makes sense: platform is known to never be non-OF, component is known
to be used only on such platforms, etc.

-- 
With Best Regards,
Andy Shevchenko