linux-kernel - Re: platform_bus: Allow runtime PM by default

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Message-ID: <20100422235353.GA16310@kroah.com>
Date:	Thu, 22 Apr 2010 16:53:53 -0700
From:	Greg KH <greg@...ah.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	linux-pm@...ts.linux-foundation.org
Subject: Re: platform_bus: Allow runtime PM by default

On Fri, Mar 26, 2010 at 05:42:50PM +0000, Mark Brown wrote:
> 
> Currently the default runtime PM callbacks for platform devices return
> -ENOSYS, preventing the use of runtime PM platforms until they have
> provided at least a default implementation. This hinders the use of
> runtime PM by devices which work with many platforms such as memory
> mapped devices, MFDs and on chip IPs shared by multiple architectures.
> 
> Change the default implementation to the standard pm_generic_runtime
> one, allowing drivers to use runtime PM without per-architecture
> changes.

That's nice, but it breaks the build on my system:
  CC      drivers/base/platform.o
drivers/base/platform.c: In function ‘platform_pm_runtime_suspend’:
drivers/base/platform.c:970: error: implicit declaration of function ‘pm_generic_runtime_suspend’
drivers/base/platform.c: In function ‘platform_pm_runtime_resume’:
drivers/base/platform.c:975: error: implicit declaration of function ‘pm_generic_runtime_resume’
drivers/base/platform.c: In function ‘platform_pm_runtime_idle’:
drivers/base/platform.c:980: error: implicit declaration of function ‘pm_generic_runtime_idle’
make[1]: *** [drivers/base/platform.o] Error 1
make: *** [_module_drivers/base] Error 2

Care to fix it up?

thanks,

greg k-h
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