linux-kernel - Re: [PATCH 09/13] cpufreq: acpi-cpufreq: Remove unused ID structs

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Message-ID: <20200714210340.GJ1398296@dell>
Date:   Tue, 14 Jul 2020 22:03:40 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Andy Grover <andrew.grover@...el.com>,
        Paul Diefenbaugh <paul.s.diefenbaugh@...el.com>,
        Dominik Brodowski <linux@...do.de>,
        Denis Sadykov <denis.m.sadykov@...el.com>
Subject: Re: [PATCH 09/13] cpufreq: acpi-cpufreq: Remove unused ID structs

On Tue, 14 Jul 2020, Rafael J. Wysocki wrote:

> On Tue, Jul 14, 2020 at 4:51 PM Lee Jones <lee.jones@...aro.org> wrote:
> >
> > Can't see them being used anywhere and the compiler doesn't complain
> > that they're missing, so ...
> 
> Aren't they needed for automatic module loading in certain configurations?

Any idea how that works, or where the code is for that?

> > Fixes the following W=1 kernel build warning(s):
> >
> >  drivers/cpufreq/acpi-cpufreq.c:1004:36: warning: ‘processor_device_ids’ defined but not used [-Wunused-const-variable=]
> >  997 | static const struct x86_cpu_id acpi_cpufreq_ids[] = {
> >  | ^~~~~~~~~~~~~~~~
> >  drivers/cpufreq/acpi-cpufreq.c:997:32: warning: ‘acpi_cpufreq_ids’ defined but not used [-Wunused-const-variable=]
> >  619 | static const struct acpi_device_id processor_device_ids[] = {
> >  | ^~~~~~~~~~~~~~~~~~~~
> >
> > Cc: Andy Grover <andrew.grover@...el.com>
> > Cc: Paul Diefenbaugh <paul.s.diefenbaugh@...el.com>
> > Cc: Dominik Brodowski <linux@...do.de>
> > Cc: Denis Sadykov <denis.m.sadykov@...el.com>
> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > ---
> >  drivers/cpufreq/acpi-cpufreq.c | 14 --------------
> >  1 file changed, 14 deletions(-)
> >
> > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> > index d38a693b48e03..fc68f13352695 100644
> > --- a/drivers/cpufreq/acpi-cpufreq.c
> > +++ b/drivers/cpufreq/acpi-cpufreq.c
> > @@ -995,18 +995,4 @@ MODULE_PARM_DESC(acpi_pstate_strict,
> >  late_initcall(acpi_cpufreq_init);
> >  module_exit(acpi_cpufreq_exit);
> >
> > -static const struct x86_cpu_id acpi_cpufreq_ids[] = {
> > -       X86_MATCH_FEATURE(X86_FEATURE_ACPI, NULL),
> > -       X86_MATCH_FEATURE(X86_FEATURE_HW_PSTATE, NULL),
> > -       {}
> > -};
> > -MODULE_DEVICE_TABLE(x86cpu, acpi_cpufreq_ids);
> > -
> > -static const struct acpi_device_id processor_device_ids[] = {
> > -       {ACPI_PROCESSOR_OBJECT_HID, },
> > -       {ACPI_PROCESSOR_DEVICE_HID, },
> > -       {},
> > -};
> > -MODULE_DEVICE_TABLE(acpi, processor_device_ids);
> > -
> >  MODULE_ALIAS("acpi");
> >

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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