1 files changed, 0 insertions, 469 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
deleted file mode 100644
index 0b00f56c2ad..00000000000
--- a/kernel/power/disk.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * kernel/power/disk.c - Suspend-to-disk support.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Lab
- * Copyright (c) 2004 Pavel Machek <pavel@suse.cz>
- *
- * This file is released under the GPLv2.
- *
- */
-
-#include <linux/suspend.h>
-#include <linux/syscalls.h>
-#include <linux/reboot.h>
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/pm.h>
-#include <linux/console.h>
-#include <linux/cpu.h>
-#include <linux/freezer.h>
-
-#include "power.h"
-
-
-static int noresume = 0;
-char resume_file[256] = CONFIG_PM_STD_PARTITION;
-dev_t swsusp_resume_device;
-sector_t swsusp_resume_block;
-
-/**
- *	platform_prepare - prepare the machine for hibernation using the
- *	platform driver if so configured and return an error code if it fails
- */
-
-static inline int platform_prepare(void)
-{
-	int error = 0;
-
-	if (pm_disk_mode == PM_DISK_PLATFORM) {
-		if (pm_ops && pm_ops->prepare)
-			error = pm_ops->prepare(PM_SUSPEND_DISK);
-	}
-	return error;
-}
-
-/**
- *	power_down - Shut machine down for hibernate.
- *	@mode:		Suspend-to-disk mode
- *
- *	Use the platform driver, if configured so, and return gracefully if it
- *	fails.
- *	Otherwise, try to power off and reboot. If they fail, halt the machine,
- *	there ain't no turning back.
- */
-
-static void power_down(suspend_disk_method_t mode)
-{
-	switch(mode) {
-	case PM_DISK_PLATFORM:
-		kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK);
-		pm_ops->enter(PM_SUSPEND_DISK);
-		break;
-	case PM_DISK_SHUTDOWN:
-		kernel_power_off();
-		break;
-	case PM_DISK_REBOOT:
-		kernel_restart(NULL);
-		break;
-	}
-	kernel_halt();
-	/* Valid image is on the disk, if we continue we risk serious data corruption
-	   after resume. */
-	printk(KERN_CRIT "Please power me down manually\n");
-	while(1);
-}
-
-static inline void platform_finish(void)
-{
-	if (pm_disk_mode == PM_DISK_PLATFORM) {
-		if (pm_ops && pm_ops->finish)
-			pm_ops->finish(PM_SUSPEND_DISK);
-	}
-}
-
-static int prepare_processes(void)
-{
-	int error = 0;
-
-	pm_prepare_console();
-
-	error = disable_nonboot_cpus();
-	if (error)
-		goto enable_cpus;
-
-	if (freeze_processes()) {
-		error = -EBUSY;
-		goto thaw;
-	}
-
-	if (pm_disk_mode == PM_DISK_TESTPROC) {
-		printk("swsusp debug: Waiting for 5 seconds.\n");
-		mdelay(5000);
-		goto thaw;
-	}
-
-	error = platform_prepare();
-	if (error)
-		goto thaw;
-
-	/* Free memory before shutting down devices. */
-	if (!(error = swsusp_shrink_memory()))
-		return 0;
-
-	platform_finish();
- thaw:
-	thaw_processes();
- enable_cpus:
-	enable_nonboot_cpus();
-	pm_restore_console();
-	return error;
-}
-
-static void unprepare_processes(void)
-{
-	platform_finish();
-	thaw_processes();
-	enable_nonboot_cpus();
-	pm_restore_console();
-}
-
-/**
- *	pm_suspend_disk - The granpappy of hibernation power management.
- *
- *	If we're going through the firmware, then get it over with quickly.
- *
- *	If not, then call swsusp to do its thing, then figure out how
- *	to power down the system.
- */
-
-int pm_suspend_disk(void)
-{
-	int error;
-
-	error = prepare_processes();
-	if (error)
-		return error;
-
-	if (pm_disk_mode == PM_DISK_TESTPROC)
-		return 0;
-
-	suspend_console();
-	error = device_suspend(PMSG_FREEZE);
-	if (error) {
-		resume_console();
-		printk("Some devices failed to suspend\n");
-		goto Thaw;
-	}
-
-	if (pm_disk_mode == PM_DISK_TEST) {
-		printk("swsusp debug: Waiting for 5 seconds.\n");
-		mdelay(5000);
-		goto Done;
-	}
-
-	pr_debug("PM: snapshotting memory.\n");
-	in_suspend = 1;
-	if ((error = swsusp_suspend()))
-		goto Done;
-
-	if (in_suspend) {
-		device_resume();
-		resume_console();
-		pr_debug("PM: writing image.\n");
-		error = swsusp_write();
-		if (!error)
-			power_down(pm_disk_mode);
-		else {
-			swsusp_free();
-			goto Thaw;
-		}
-	} else {
-		pr_debug("PM: Image restored successfully.\n");
-	}
-
-	swsusp_free();
- Done:
-	device_resume();
-	resume_console();
- Thaw:
-	unprepare_processes();
-	return error;
-}
-
-
-/**
- *	software_resume - Resume from a saved image.
- *
- *	Called as a late_initcall (so all devices are discovered and
- *	initialized), we call swsusp to see if we have a saved image or not.
- *	If so, we quiesce devices, the restore the saved image. We will
- *	return above (in pm_suspend_disk() ) if everything goes well.
- *	Otherwise, we fail gracefully and return to the normally
- *	scheduled program.
- *
- */
-
-static int software_resume(void)
-{
-	int error;
-
-	mutex_lock(&pm_mutex);
-	if (!swsusp_resume_device) {
-		if (!strlen(resume_file)) {
-			mutex_unlock(&pm_mutex);
-			return -ENOENT;
-		}
-		swsusp_resume_device = name_to_dev_t(resume_file);
-		pr_debug("swsusp: Resume From Partition %s\n", resume_file);
-	} else {
-		pr_debug("swsusp: Resume From Partition %d:%d\n",
-			 MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
-	}
-
-	if (noresume) {
-		/**
-		 * FIXME: If noresume is specified, we need to find the partition
-		 * and reset it back to normal swap space.
-		 */
-		mutex_unlock(&pm_mutex);
-		return 0;
-	}
-
-	pr_debug("PM: Checking swsusp image.\n");
-
-	if ((error = swsusp_check()))
-		goto Done;
-
-	pr_debug("PM: Preparing processes for restore.\n");
-
-	if ((error = prepare_processes())) {
-		swsusp_close();
-		goto Done;
-	}
-
-	pr_debug("PM: Reading swsusp image.\n");
-
-	if ((error = swsusp_read())) {
-		swsusp_free();
-		goto Thaw;
-	}
-
-	pr_debug("PM: Preparing devices for restore.\n");
-
-	suspend_console();
-	if ((error = device_suspend(PMSG_PRETHAW))) {
-		resume_console();
-		printk("Some devices failed to suspend\n");
-		swsusp_free();
-		goto Thaw;
-	}
-
-	mb();
-
-	pr_debug("PM: Restoring saved image.\n");
-	swsusp_resume();
-	pr_debug("PM: Restore failed, recovering.n");
-	device_resume();
-	resume_console();
- Thaw:
-	unprepare_processes();
- Done:
-	/* For success case, the suspend path will release the lock */
-	mutex_unlock(&pm_mutex);
-	pr_debug("PM: Resume from disk failed.\n");
-	return 0;
-}
-
-late_initcall(software_resume);
-
-
-static const char * const pm_disk_modes[] = {
-	[PM_DISK_FIRMWARE]	= "firmware",
-	[PM_DISK_PLATFORM]	= "platform",
-	[PM_DISK_SHUTDOWN]	= "shutdown",
-	[PM_DISK_REBOOT]	= "reboot",
-	[PM_DISK_TEST]		= "test",
-	[PM_DISK_TESTPROC]	= "testproc",
-};
-
-/**
- *	disk - Control suspend-to-disk mode
- *
- *	Suspend-to-disk can be handled in several ways. The greatest
- *	distinction is who writes memory to disk - the firmware or the OS.
- *	If the firmware does it, we assume that it also handles suspending
- *	the system.
- *	If the OS does it, then we have three options for putting the system
- *	to sleep - using the platform driver (e.g. ACPI or other PM registers),
- *	powering off the system or rebooting the system (for testing).
- *
- *	The system will support either 'firmware' or 'platform', and that is
- *	known a priori (and encoded in pm_ops). But, the user may choose
- *	'shutdown' or 'reboot' as alternatives.
- *
- *	show() will display what the mode is currently set to.
- *	store() will accept one of
- *
- *	'firmware'
- *	'platform'
- *	'shutdown'
- *	'reboot'
- *
- *	It will only change to 'firmware' or 'platform' if the system
- *	supports it (as determined from pm_ops->pm_disk_mode).
- */
-
-static ssize_t disk_show(struct subsystem * subsys, char * buf)
-{
-	return sprintf(buf, "%s\n", pm_disk_modes[pm_disk_mode]);
-}
-
-
-static ssize_t disk_store(struct subsystem * s, const char * buf, size_t n)
-{
-	int error = 0;
-	int i;
-	int len;
-	char *p;
-	suspend_disk_method_t mode = 0;
-
-	p = memchr(buf, '\n', n);
-	len = p ? p - buf : n;
-
-	mutex_lock(&pm_mutex);
-	for (i = PM_DISK_FIRMWARE; i < PM_DISK_MAX; i++) {
-		if (!strncmp(buf, pm_disk_modes[i], len)) {
-			mode = i;
-			break;
-		}
-	}
-	if (mode) {
-		if (mode == PM_DISK_SHUTDOWN || mode == PM_DISK_REBOOT ||
-		     mode == PM_DISK_TEST || mode == PM_DISK_TESTPROC) {
-			pm_disk_mode = mode;
-		} else {
-			if (pm_ops && pm_ops->enter &&
-			    (mode == pm_ops->pm_disk_mode))
-				pm_disk_mode = mode;
-			else
-				error = -EINVAL;
-		}
-	} else {
-		error = -EINVAL;
-	}
-
-	pr_debug("PM: suspend-to-disk mode set to '%s'\n",
-		 pm_disk_modes[mode]);
-	mutex_unlock(&pm_mutex);
-	return error ? error : n;
-}
-
-power_attr(disk);
-
-static ssize_t resume_show(struct subsystem * subsys, char *buf)
-{
-	return sprintf(buf,"%d:%d\n", MAJOR(swsusp_resume_device),
-		       MINOR(swsusp_resume_device));
-}
-
-static ssize_t resume_store(struct subsystem *subsys, const char *buf, size_t n)
-{
-	unsigned int maj, min;
-	dev_t res;
-	int ret = -EINVAL;
-
-	if (sscanf(buf, "%u:%u", &maj, &min) != 2)
-		goto out;
-
-	res = MKDEV(maj,min);
-	if (maj != MAJOR(res) || min != MINOR(res))
-		goto out;
-
-	mutex_lock(&pm_mutex);
-	swsusp_resume_device = res;
-	mutex_unlock(&pm_mutex);
-	printk("Attempting manual resume\n");
-	noresume = 0;
-	software_resume();
-	ret = n;
- out:
-	return ret;
-}
-
-power_attr(resume);
-
-static ssize_t image_size_show(struct subsystem * subsys, char *buf)
-{
-	return sprintf(buf, "%lu\n", image_size);
-}
-
-static ssize_t image_size_store(struct subsystem * subsys, const char * buf, size_t n)
-{
-	unsigned long size;
-
-	if (sscanf(buf, "%lu", &size) == 1) {
-		image_size = size;
-		return n;
-	}
-
-	return -EINVAL;
-}
-
-power_attr(image_size);
-
-static struct attribute * g[] = {
-	&disk_attr.attr,
-	&resume_attr.attr,
-	&image_size_attr.attr,
-	NULL,
-};
-
-
-static struct attribute_group attr_group = {
-	.attrs = g,
-};
-
-
-static int __init pm_disk_init(void)
-{
-	return sysfs_create_group(&power_subsys.kset.kobj,&attr_group);
-}
-
-core_initcall(pm_disk_init);
-
-
-static int __init resume_setup(char *str)
-{
-	if (noresume)
-		return 1;
-
-	strncpy( resume_file, str, 255 );
-	return 1;
-}
-
-static int __init resume_offset_setup(char *str)
-{
-	unsigned long long offset;
-
-	if (noresume)
-		return 1;
-
-	if (sscanf(str, "%llu", &offset) == 1)
-		swsusp_resume_block = offset;
-
-	return 1;
-}
-
-static int __init noresume_setup(char *str)
-{
-	noresume = 1;
-	return 1;
-}
-
-__setup("noresume", noresume_setup);
-__setup("resume_offset=", resume_offset_setup);
-__setup("resume=", resume_setup);