diff --git a/Documentation/driver-model/bus.txt b/Documentation/driver-model/bus.txt
index dd62c7b..5001b75 100644
--- a/Documentation/driver-model/bus.txt
+++ b/Documentation/driver-model/bus.txt
@@ -18,7 +18,7 @@
 	int		(*match)(struct device * dev, struct device_driver * drv);
 	int		(*hotplug) (struct device *dev, char **envp, 
 				    int num_envp, char *buffer, int buffer_size);
-	int		(*suspend)(struct device * dev, u32 state);
+	int		(*suspend)(struct device * dev, pm_message_t state);
 	int		(*resume)(struct device * dev);
 };
 
diff --git a/Documentation/driver-model/driver.txt b/Documentation/driver-model/driver.txt
index 1244778..6031a68 100644
--- a/Documentation/driver-model/driver.txt
+++ b/Documentation/driver-model/driver.txt
@@ -16,7 +16,7 @@
         int     (*probe)        (struct device * dev);
         int     (*remove)       (struct device * dev);
 
-        int     (*suspend)      (struct device * dev, u32 state, u32 level);
+        int     (*suspend)      (struct device * dev, pm_message_t state, u32 level);
         int     (*resume)       (struct device * dev, u32 level);
 
         void    (*release)      (struct device_driver * drv);
@@ -195,7 +195,7 @@
 If the device is still present, it should quiesce the device and place
 it into a supported low-power state.
 
-	int	(*suspend)	(struct device * dev, u32 state, u32 level);
+	int	(*suspend)	(struct device * dev, pm_message_t state, u32 level);
 
 suspend is called to put the device in a low power state. There are
 several stages to successfully suspending a device, which is denoted in
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 35c1751..e3879f7 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -548,7 +548,7 @@
 	unsigned int apic_thmr;
 } apic_pm_state;
 
-static int lapic_suspend(struct sys_device *dev, u32 state)
+static int lapic_suspend(struct sys_device *dev, pm_message_t state)
 {
 	unsigned long flags;
 
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index 560bef1..2c4813b 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -262,7 +262,7 @@
 	return 0;
 }
 
-static int i8259A_suspend(struct sys_device *dev, u32 state)
+static int i8259A_suspend(struct sys_device *dev, pm_message_t state)
 {
 	save_ELCR(irq_trigger);
 	return 0;
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 9c1350e..5e0d55b 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2299,7 +2299,7 @@
 };
 static struct sysfs_ioapic_data * mp_ioapic_data[MAX_IO_APICS];
 
-static int ioapic_suspend(struct sys_device *dev, u32 state)
+static int ioapic_suspend(struct sys_device *dev, pm_message_t state)
 {
 	struct IO_APIC_route_entry *entry;
 	struct sysfs_ioapic_data *data;
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index f5b0c50..2f89d00 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -265,7 +265,7 @@
 
 static int nmi_pm_active; /* nmi_active before suspend */
 
-static int lapic_nmi_suspend(struct sys_device *dev, u32 state)
+static int lapic_nmi_suspend(struct sys_device *dev, pm_message_t state)
 {
 	nmi_pm_active = nmi_active;
 	disable_lapic_nmi_watchdog();
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 9b55e30..4d75b37 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -376,7 +376,7 @@
 
 static long clock_cmos_diff, sleep_start;
 
-static int timer_suspend(struct sys_device *dev, u32 state)
+static int timer_suspend(struct sys_device *dev, pm_message_t state)
 {
 	/*
 	 * Estimate time zone so that set_time can update the clock
diff --git a/arch/i386/oprofile/nmi_int.c b/arch/i386/oprofile/nmi_int.c
index 3492d96..255e470 100644
--- a/arch/i386/oprofile/nmi_int.c
+++ b/arch/i386/oprofile/nmi_int.c
@@ -32,7 +32,7 @@
 
 #ifdef CONFIG_PM
 
-static int nmi_suspend(struct sys_device *dev, u32 state)
+static int nmi_suspend(struct sys_device *dev, pm_message_t state)
 {
 	if (nmi_enabled == 1)
 		nmi_stop();
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index cff5a6a..9102e37 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/pm.h>
 
 
 extern struct subsystem devices_subsys;
@@ -302,7 +303,7 @@
  *	all synchronization.
  */
 
-int sysdev_suspend(u32 state)
+int sysdev_suspend(pm_message_t state)
 {
 	struct sysdev_class * cls;
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index bea13a9..3c89148 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -501,6 +501,7 @@
 #define PCI_D2	((pci_power_t __force) 2)
 #define PCI_D3hot	((pci_power_t __force) 3)
 #define PCI_D3cold	((pci_power_t __force) 4)
+#define PCI_POWER_ERROR	((pci_power_t __force) -1)
 
 /*
  * The pci_dev structure is used to describe PCI devices.
@@ -669,7 +670,7 @@
 	void (*remove) (struct pci_dev *dev);	/* Device removed (NULL if not a hot-plug capable driver) */
 	int  (*suspend) (struct pci_dev *dev, pm_message_t state);	/* Device suspended */
 	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
-	int  (*enable_wake) (struct pci_dev *dev, u32 state, int enable);   /* Enable wake event */
+	int  (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);   /* Enable wake event */
 
 	struct device_driver	driver;
 	struct pci_dynids dynids;
@@ -952,7 +953,7 @@
 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
 static inline int pci_restore_state(struct pci_dev *dev) { return 0; }
 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; }
-static inline pci_power_t pci_choose_state(struct pci_dev *dev, u32 state) { return PCI_D0; }
+static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; }
 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; }
 
 #define	isa_bridge	((struct pci_dev *)NULL)
diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h
index 635db1d..2a4b432 100644
--- a/include/linux/sysdev.h
+++ b/include/linux/sysdev.h
@@ -22,6 +22,7 @@
 #define _SYSDEV_H_
 
 #include <linux/kobject.h>
+#include <linux/pm.h>
 
 
 struct sys_device;
@@ -31,7 +32,7 @@
 
 	/* Default operations for these types of devices */
 	int	(*shutdown)(struct sys_device *);
-	int	(*suspend)(struct sys_device *, u32 state);
+	int	(*suspend)(struct sys_device *, pm_message_t state);
 	int	(*resume)(struct sys_device *);
 	struct kset		kset;
 };
@@ -50,7 +51,7 @@
 	int	(*add)(struct sys_device *);
 	int	(*remove)(struct sys_device *);
 	int	(*shutdown)(struct sys_device *);
-	int	(*suspend)(struct sys_device *, u32 state);
+	int	(*suspend)(struct sys_device *, pm_message_t state);
 	int	(*resume)(struct sys_device *);
 };