PM: Revert "driver core: platform_bus: allow runtime override of dev_pm_ops"

The platform_bus_set_pm_ops() operation is deprecated in favor of the
new device power domain infrastructre implemented in commit
7538e3db (PM: add support for device
power domains)
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

drivers/base/platform.c

@@ -916,41 +916,6 @@ struct bus_type platform_bus_type = {
 };
 EXPORT_SYMBOL_GPL(platform_bus_type);
 
-/**
- * platform_bus_get_pm_ops() - return pointer to busses dev_pm_ops
- *
- * This function can be used by platform code to get the current
- * set of dev_pm_ops functions used by the platform_bus_type.
- */
-const struct dev_pm_ops * __init platform_bus_get_pm_ops(void)
-{
-	return platform_bus_type.pm;
-}
-
-/**
- * platform_bus_set_pm_ops() - update dev_pm_ops for the platform_bus_type
- *
- * @pm: pointer to new dev_pm_ops struct to be used for platform_bus_type
- *
- * Platform code can override the dev_pm_ops methods of
- * platform_bus_type by using this function.  It is expected that
- * platform code will first do a platform_bus_get_pm_ops(), then
- * kmemdup it, then customize selected methods and pass a pointer to
- * the new struct dev_pm_ops to this function.
- *
- * Since platform-specific code is customizing methods for *all*
- * devices (not just platform-specific devices) it is expected that
- * any custom overrides of these functions will keep existing behavior
- * and simply extend it.  For example, any customization of the
- * runtime PM methods should continue to call the pm_generic_*
- * functions as the default ones do in addition to the
- * platform-specific behavior.
- */
-void __init platform_bus_set_pm_ops(const struct dev_pm_ops *pm)
-{
-	platform_bus_type.pm = pm;
-}
-
 int __init platform_bus_init(void)
 {
 	int error;

include/linux/platform_device.h

@@ -150,9 +150,6 @@ extern struct platform_device *platform_create_bundle(struct platform_driver *dr
 					struct resource *res, unsigned int n_res,
 					const void *data, size_t size);
 
-extern const struct dev_pm_ops * platform_bus_get_pm_ops(void);
-extern void platform_bus_set_pm_ops(const struct dev_pm_ops *pm);
-
 /* early platform driver interface */
 struct early_platform_driver {
 	const char *class_str;