/*
* shutdown.c - power management functions for the device tree.
- *
+ *
* Copyright (c) 2002-3 Patrick Mochel
* 2002-3 Open Source Development Lab
- *
+ *
* This file is released under the GPLv2
*
*/
#include <linux/device.h>
#include <asm/semaphore.h>
+#include "../base.h"
#include "power.h"
-#define to_dev(node) container_of(node,struct device,kobj.entry)
+#define to_dev(node) container_of(node, struct device, kobj.entry)
extern struct subsystem devices_subsys;
-int device_detach_shutdown(struct device * dev)
-{
- if (!dev->detach_state)
- return 0;
-
- if (dev->detach_state == DEVICE_PM_OFF) {
- if (dev->driver && dev->driver->shutdown)
- dev->driver->shutdown(dev);
- return 0;
- }
- return dpm_runtime_suspend(dev,dev->detach_state);
-}
-
-
/**
- * We handle system devices differently - we suspend and shut them
- * down first and resume them first. That way, we do anything stupid like
+ * We handle system devices differently - we suspend and shut them
+ * down last and resume them first. That way, we don't do anything stupid like
* shutting down the interrupt controller before any devices..
*
- * Note that there are not different stages for power management calls -
- * they only get one called once when interrupts are disabled.
+ * Note that there are not different stages for power management calls -
+ * they only get one called once when interrupts are disabled.
*/
-extern int sysdev_shutdown(void);
/**
- * device_shutdown - call ->remove() on each device to shutdown.
+ * device_shutdown - call ->shutdown() on each device to shutdown.
*/
void device_shutdown(void)
{
- struct device * dev;
-
+ struct device * dev, *devn;
+
down_write(&devices_subsys.rwsem);
- list_for_each_entry_reverse(dev,&devices_subsys.kset.list,kobj.entry) {
- pr_debug("shutting down %s: ",dev->bus_id);
- if (dev->driver && dev->driver->shutdown) {
- pr_debug("Ok\n");
+ list_for_each_entry_safe_reverse(dev, devn, &devices_subsys.kset.list,
+ kobj.entry) {
+ if (dev->bus && dev->bus->shutdown) {
+ dev_dbg(dev, "shutdown\n");
+ dev->bus->shutdown(dev);
+ } else if (dev->driver && dev->driver->shutdown) {
+ dev_dbg(dev, "shutdown\n");
dev->driver->shutdown(dev);
- } else
- pr_debug("Ignored.\n");
+ }
}
up_write(&devices_subsys.rwsem);