From: Arnd Bergmann <arnd@arndb.de>
To: Graeme Gregory <graeme.gregory@linaro.org>
Cc: linaro-acpi@lists.linaro.org, Rob Herring <robh@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Robert Richter <rric@kernel.org>,
Jason Cooper <jason@lakedaemon.net>,
linux-acpi@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Robert Moore <robert.moore@intel.com>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Olof Johansson <olof@lixom.net>,
Liviu Dudau <Liviu.Dudau@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-arm-kernel@lists.infradead.org,
Lv Zheng <lv.zheng@intel.com>
Subject: Re: [Linaro-acpi] [RFC PATCH for Juno 1/2] net: smsc911x add support for probing from ACPI
Date: Mon, 01 Sep 2014 17:32 +0200 [thread overview]
Message-ID: <40491090.z7F1jbVZzH@wuerfel> (raw)
In-Reply-To: <20140901152854.GJ2953@xora-haswell.xora.org.uk>
On Monday 01 September 2014 16:28:54 Graeme Gregory wrote:
> On Mon, Sep 01, 2014 at 05:17:51PM +0200, Arnd Bergmann wrote:
> > On Monday 01 September 2014 23:06:00 Hanjun Guo wrote:
> > > +#ifdef CONFIG_ACPI
> > > +/* Configure some sensible defaults for ACPI mode */
> > > +static int smsc911x_probe_config_acpi(struct smsc911x_platform_config *config,
> > > + acpi_handle *ahandle)
> > > +{
> > > + if (!ahandle)
> > > + return -ENOSYS;
> > > +
> > > + config->phy_interface = PHY_INTERFACE_MODE_MII;
> > >
> >
> > Please remove the #ifdef and use
> >
> > if (!IS_ENABLED(CONFIG_ACPI) || !ahandle)
> >
> > to check for ACPI support. This should result in the same object code
> > in all cases, but give better compile-time coverage when ACPI is
> > disabled.
> >
> struct acpi_handle does not exist in the case !CONFIG_ACPI
That should be easy to fix, and a good idea in general, independent
of this patch.
We generally make function declarations and type definitions visible
(possibly empty) for disabled subsystems so the code using them
silently goes away when that subsystem is disabled.
Arnd
next prev parent reply other threads:[~2014-09-01 15:32 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 15:05 [RFC PATCH for Juno 0/2] Drivers for Juno to boot from ACPI Hanjun Guo
2014-09-01 15:06 ` [RFC PATCH for Juno 1/2] net: smsc911x add support for probing " Hanjun Guo
2014-09-01 15:17 ` [Linaro-acpi] " Arnd Bergmann
2014-09-01 15:28 ` Graeme Gregory
2014-09-01 15:32 ` Arnd Bergmann [this message]
2014-09-01 16:53 ` Catalin Marinas
2014-09-01 16:58 ` Mark Brown
2014-09-01 17:08 ` Sudeep Holla
2014-09-01 17:14 ` Catalin Marinas
2014-09-01 17:33 ` Sudeep Holla
2014-09-01 17:03 ` Graeme Gregory
2014-09-15 4:08 ` Grant Likely
2014-09-15 9:24 ` Catalin Marinas
2014-09-01 17:04 ` Catalin Marinas
2014-09-01 17:11 ` Arnd Bergmann
2014-09-01 17:27 ` Catalin Marinas
2014-09-01 17:32 ` Graeme Gregory
2014-09-01 18:11 ` Mark Brown
2014-09-02 13:26 ` Catalin Marinas
2014-09-02 13:42 ` [Linaro-acpi] " Arnd Bergmann
2014-09-02 16:26 ` Mark Brown
2014-09-02 23:00 ` Rafael J. Wysocki
2014-09-03 15:09 ` Arnd Bergmann
2014-09-09 6:51 ` Jon Masters
2014-09-15 4:14 ` Grant Likely
2014-09-15 16:12 ` Mark Brown
2014-09-01 15:06 ` [RFC PATCH for Juno 2/2] tty: SBSA compatible UART Hanjun Guo
2014-09-01 15:26 ` Mark Brown
2014-09-01 17:12 ` Catalin Marinas
2014-09-01 17:18 ` Graeme Gregory
2014-09-01 17:29 ` Catalin Marinas
2014-09-01 15:29 ` [RFC PATCH for Juno 0/2] Drivers for Juno to boot from ACPI Arnd Bergmann
2014-09-09 6:55 ` Jon Masters
2014-09-09 10:55 ` Arnd Bergmann
2014-09-09 14:13 ` Jon Masters
2014-09-15 22:57 ` Grant Likely
2014-09-15 23:00 ` Jon Masters
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