linux-kernel - Re: [PATCH v1 01/10] spi: pxa2xx: Drop ACPI_PTR() and of_match

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Date: Tue, 26 Mar 2024 18:49:58 +0000
From: Mark Brown <broonie@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v1 01/10] spi: pxa2xx: Drop ACPI_PTR() and of_match_ptr()

On Tue, Mar 26, 2024 at 08:44:11PM +0200, Andy Shevchenko wrote:
> On Tue, Mar 26, 2024 at 06:25:16PM +0000, Mark Brown wrote:
> > On Tue, Mar 26, 2024 at 08:22:59PM +0200, Andy Shevchenko wrote:
> > > On Tue, Mar 26, 2024 at 06:16:28PM +0000, Mark Brown wrote:

> > > > I think the ACPI dependency there is as much about hiding the device on
> > > > irrelevant platforms as anything else, might be better replaced with an
> > > > x86 dependency though.

..

> > That's nice but I'm not sure what that has to do with the dependency on
> > ACPI?

> ACPI_PTR() makes ID no-op only if ACPI is defined. That also satisfies
> the ugly ifdeffery that is removed by this patch as well. If there is
> no dependency we will have compiler warning for defined but not used
> variable.

Again I don't think that's the main purpose of the dependency here.

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