PM: merge device power-management source files

This patch (as993) merges the suspend.c and resume.c files in
drivers/base/power into main.c, making some public symbols private.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 210 deletions

diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
deleted file mode 100644
index 204517afb15e..000000000000
--- a/drivers/base/power/suspend.c
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * suspend.c - Functions for putting devices to sleep.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Labs
- *
- * This file is released under the GPLv2
- *
- */
-
-#include <linux/device.h>
-#include <linux/kallsyms.h>
-#include <linux/pm.h>
-#include "../base.h"
-#include "power.h"
-
-/*
- * The entries in the dpm_active list are in a depth first order, simply
- * because children are guaranteed to be discovered after parents, and
- * are inserted at the back of the list on discovery.
- *
- * All list on the suspend path are done in reverse order, so we operate
- * on the leaves of the device tree (or forests, depending on how you want
- * to look at it ;) first. As nodes are removed from the back of the list,
- * they are inserted into the front of their destintation lists.
- *
- * Things are the reverse on the resume path - iterations are done in
- * forward order, and nodes are inserted at the back of their destination
- * lists. This way, the ancestors will be accessed before their descendents.
- */
-
-static inline char *suspend_verb(u32 event)
-{
-	switch (event) {
-	case PM_EVENT_SUSPEND:	return "suspend";
-	case PM_EVENT_FREEZE:	return "freeze";
-	case PM_EVENT_PRETHAW:	return "prethaw";
-	default:		return "(unknown suspend event)";
-	}
-}
-
-
-static void
-suspend_device_dbg(struct device *dev, pm_message_t state, char *info)
-{
-	dev_dbg(dev, "%s%s%s\n", info, suspend_verb(state.event),
-		((state.event == PM_EVENT_SUSPEND) && device_may_wakeup(dev)) ?
-		", may wakeup" : "");
-}
-
-/**
- *	suspend_device - Save state of one device.
- *	@dev:	Device.
- *	@state:	Power state device is entering.
- */
-
-static int suspend_device(struct device * dev, pm_message_t state)
-{
-	int error = 0;
-
-	down(&dev->sem);
-	if (dev->power.power_state.event) {
-		dev_dbg(dev, "PM: suspend %d-->%d\n",
-			dev->power.power_state.event, state.event);
-	}
-
-	if (dev->class && dev->class->suspend) {
-		suspend_device_dbg(dev, state, "class ");
-		error = dev->class->suspend(dev, state);
-		suspend_report_result(dev->class->suspend, error);
-	}
-
-	if (!error && dev->type && dev->type->suspend) {
-		suspend_device_dbg(dev, state, "type ");
-		error = dev->type->suspend(dev, state);
-		suspend_report_result(dev->type->suspend, error);
-	}
-
-	if (!error && dev->bus && dev->bus->suspend) {
-		suspend_device_dbg(dev, state, "");
-		error = dev->bus->suspend(dev, state);
-		suspend_report_result(dev->bus->suspend, error);
-	}
-	up(&dev->sem);
-	return error;
-}
-
-
-/*
- * This is called with interrupts off, only a single CPU
- * running. We can't acquire a mutex or semaphore (and we don't
- * need the protection)
- */
-static int suspend_device_late(struct device *dev, pm_message_t state)
-{
-	int error = 0;
-
-	if (dev->bus && dev->bus->suspend_late) {
-		suspend_device_dbg(dev, state, "LATE ");
-		error = dev->bus->suspend_late(dev, state);
-		suspend_report_result(dev->bus->suspend_late, error);
-	}
-	return error;
-}
-
-/**
- *	device_suspend - Save state and stop all devices in system.
- *	@state:		Power state to put each device in.
- *
- *	Walk the dpm_active list, call ->suspend() for each device, and move
- *	it to the dpm_off list.
- *
- *	(For historical reasons, if it returns -EAGAIN, that used to mean
- *	that the device would be called again with interrupts disabled.
- *	These days, we use the "suspend_late()" callback for that, so we
- *	print a warning and consider it an error).
- *
- *	If we get a different error, try and back out.
- *
- *	If we hit a failure with any of the devices, call device_resume()
- *	above to bring the suspended devices back to life.
- *
- */
-
-int device_suspend(pm_message_t state)
-{
-	int error = 0;
-
-	might_sleep();
-	mutex_lock(&dpm_mtx);
-	mutex_lock(&dpm_list_mtx);
-	while (!list_empty(&dpm_active) && error == 0) {
-		struct list_head * entry = dpm_active.prev;
-		struct device * dev = to_device(entry);
-
-		get_device(dev);
-		mutex_unlock(&dpm_list_mtx);
-
-		error = suspend_device(dev, state);
-
-		mutex_lock(&dpm_list_mtx);
-
-		/* Check if the device got removed */
-		if (!list_empty(&dev->power.entry)) {
-			/* Move it to the dpm_off list */
-			if (!error)
-				list_move(&dev->power.entry, &dpm_off);
-		}
-		if (error)
-			printk(KERN_ERR "Could not suspend device %s: "
-				"error %d%s\n",
-				kobject_name(&dev->kobj), error,
-				error == -EAGAIN ? " (please convert to suspend_late)" : "");
-		put_device(dev);
-	}
-	mutex_unlock(&dpm_list_mtx);
-	if (error)
-		dpm_resume();
-
-	mutex_unlock(&dpm_mtx);
-	return error;
-}
-
-EXPORT_SYMBOL_GPL(device_suspend);
-
-/**
- *	device_power_down - Shut down special devices.
- *	@state:		Power state to enter.
- *
- *	Walk the dpm_off_irq list, calling ->power_down() for each device that
- *	couldn't power down the device with interrupts enabled. When we're
- *	done, power down system devices.
- */
-
-int device_power_down(pm_message_t state)
-{
-	int error = 0;
-	struct device * dev;
-
-	while (!list_empty(&dpm_off)) {
-		struct list_head * entry = dpm_off.prev;
-
-		dev = to_device(entry);
-		error = suspend_device_late(dev, state);
-		if (error)
-			goto Error;
-		list_move(&dev->power.entry, &dpm_off_irq);
-	}
-
-	error = sysdev_suspend(state);
- Done:
-	return error;
- Error:
-	printk(KERN_ERR "Could not power down device %s: "
-		"error %d\n", kobject_name(&dev->kobj), error);
-	dpm_power_up();
-	goto Done;
-}
-
-EXPORT_SYMBOL_GPL(device_power_down);
-
-void __suspend_report_result(const char *function, void *fn, int ret)
-{
-	if (ret) {
-		printk(KERN_ERR "%s(): ", function);
-		print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn);
-		printk("%d\n", ret);
-	}
-}
-EXPORT_SYMBOL_GPL(__suspend_report_result);