[PATCH/RFC] Runtime PM: ARM: subarch-specific extensions of pdev_archdata
mikpe at it.uu.se
Wed Sep 23 06:23:28 EDT 2009
Eric Miao writes:
> On Wed, Sep 23, 2009 at 9:50 AM, Kevin Hilman
> <khilman at deeprootsystems.com> wrote:
> > On ARM platforms, power management can be very platform specific.
> > This patch allows ARM subarches to extend the platform_device
> > pdev_archdata for each subarch by creating a new struct pdev_machdata
> > and allowing each subarch to customize it as needed.
> > As a starting point, each subarch's <mach/device.h> creates an empty
> > struct pdev_machdata.
> Shouldn't that pdev_archdata and pdev_machdata be pointer or something
> so that multiple platform_device can share something in common?
Forcing it to be a pointer has allocation and lifetime implications.
Making it a struct allows the subarch to duplicate or share
(via a private pointer) data as it sees fit.
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