On Fri, Apr 03, 2015 at 04:03:27PM +0200, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Add a "secondary" pointer to struct fwnode_handle so as to make it > possible for a device to have two firmware nodes associated with > it at the same time, for example, an ACPI node and a node with > a set of properties provided by platform initialization code. > > In the future that will allow device property lookup to fall back > from the primary firmware node to the secondary one if the given > property is not present there to make it easier to provide defaults > for device properties used by device drivers. > > Introduce two helper routines, set_primary_fwnode() and > set_secondary_fwnode() allowing callers to add a primary/secondary > firmware node to the given device in such a way that > > (1) If there's only one firmware node for that device, it will be > pointed to by the device's firmware node pointer. > (2) If both the primary and secondary firmware nodes are present, > the primary one will be pointed to by the device's firmware > node pointer, while the secondary one will be pointed to by the > primary node's secondary pointer. > (3) If one of these nodes is removed (by calling one of the new > nelpers with NULL as the second argument), the other one will > be preserved. > > Make ACPI use set_primary_fwnode() for attaching its firmware nodes > to devices. > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > Tested-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > --- > > Greg, any objections here? Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
