linux-kernel - Re: [PATCH v4 1/2] acpi: add acpi_preset

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Date:	Sun, 25 Oct 2015 16:01:53 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	"Rafael J. Wysocki" <rafael@...nel.org>
Cc:	Dustin Byford <dustin@...ulusnetworks.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
	Jean Delvare <jdelvare@...e.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-i2c@...r.kernel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Puustinen, Ismo" <ismo.puustinen@...el.com>
Subject: Re: [PATCH v4 1/2] acpi: add acpi_preset_companion() stub

On Sunday, October 25, 2015 02:40:10 PM Rafael J. Wysocki wrote:
> On Thu, Oct 22, 2015 at 11:17 AM, Dustin Byford
> <dustin@...ulusnetworks.com> wrote:
> > Add a stub for acpi_preset_companion().  Fixes build failures when
> > acpi_preset_companion() is used and CONFIG_ACPI is not set.
> >
> > Signed-off-by: Dustin Byford <dustin@...ulusnetworks.com>
> 
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> > ---
> >  include/linux/acpi.h | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> > index 51a96a8..66564f8 100644
> > --- a/include/linux/acpi.h
> > +++ b/include/linux/acpi.h
> > @@ -505,6 +505,12 @@ static inline bool has_acpi_companion(struct device *dev)
> >         return false;
> >  }
> >
> > +static inline void acpi_preset_companion(struct device *dev,
> > +                                        struct acpi_device *parent, u64 addr)
> > +{
> > +       return;

But of course, the version without the return statement here is better.

> > +}
> > +
> >  static inline const char *acpi_dev_name(struct acpi_device *adev)
> >  {
> >         return NULL;

Thanks,
Rafael

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