diff --git a/Documentation/driver-model/bus.txt b/Documentation/driver-model/bus.txt
index dd62c7b80b3f85aeae6805e9fc32234ecb8e6979..5001b751162609052b48f589fb6611c246aa596a 100644
--- a/Documentation/driver-model/bus.txt
+++ b/Documentation/driver-model/bus.txt
@@ -18,7 +18,7 @@ struct bus_type {
 	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 12447787d329c36699e8ec6937315c2971dec9f2..6031a68dd3f5c249ea5daf391948d058fda44fef 100644
--- a/Documentation/driver-model/driver.txt
+++ b/Documentation/driver-model/driver.txt
@@ -16,7 +16,7 @@ struct device_driver {
         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 @@ device; i.e. anything in the device's driver_data field.
 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 35c1751ea0b024070e972b7eec884c7e5d26e51c..e3879f7625c2e80a923bf12ede3dce08ca714d0a 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -548,7 +548,7 @@ static struct {
 	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 560bef1afb3b0c8d2f7932c4d7ef877a13a537e5..2c4813b47e57a5603e7bec605129b8890d68c3de 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -262,7 +262,7 @@ static int i8259A_resume(struct sys_device *dev)
 	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 9c1350e811d07369dc0a038e415c48129722a431..5e0d55be54357bbc4a1f232a1535b9276d9d876f 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2299,7 +2299,7 @@ struct sysfs_ioapic_data {
 };
 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 f5b0c5081bd65cae2d2944baf8d3710cfd9b21a8..2f89d000f9540b0e95b6f09b18858dee85c2f64c 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -265,7 +265,7 @@ void enable_timer_nmi_watchdog(void)
 
 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 9b55e30e4490cc6e09ca4786861bab9fd975da7a..4d75b373f90eaf3fd01bf229b39f7ec49a98d719 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -376,7 +376,7 @@ void notify_arch_cmos_timer(void)
 
 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 3492d961d3f17bded544191a6398de9a89e5982e..255e4702d185e363558c5064751ae7be9f9c20c0 100644
--- a/arch/i386/oprofile/nmi_int.c
+++ b/arch/i386/oprofile/nmi_int.c
@@ -32,7 +32,7 @@ static int nmi_enabled = 0;
 
 #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 cff5a6a2c78419153fd279786777fffe2db0cb1a..9102e3756f953cfc8bd0303f1add2948ee07a8bc 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 @@ void sysdev_shutdown(void)
  *	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 bea13a99e6fb4b10bec28d4fef3c477d8a7cc7d9..3c89148ae28a6e28d4ec21e680a6e383fb885e3d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -501,6 +501,7 @@ typedef int __bitwise pci_power_t;
 #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 @@ struct pci_driver {
 	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 const struct pci_device_id *pci_match_device(const struct pci_devi
 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 635db1df656f3442c07023df76b6c5bc3f180a54..2a4b432e117645cf749782a218afc8c32fdf7262 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 @@ struct sysdev_class {
 
 	/* 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 @@ struct sysdev_driver {
 	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 *);
 };