Merge branch 'syscore' into for-linus

* syscore:
  PM: Remove sysdev suspend, resume and shutdown operations
  PM / PowerPC: Use struct syscore_ops instead of sysdevs for PM
  PM / UNICORE32: Use struct syscore_ops instead of sysdevs for PM
  PM / AVR32: Use struct syscore_ops instead of sysdevs for PM
  PM / Blackfin: Use struct syscore_ops instead of sysdevs for PM
  ARM / Samsung: Use struct syscore_ops for "core" power management
  ARM / PXA: Use struct syscore_ops for "core" power management
  ARM / SA1100: Use struct syscore_ops for "core" power management
  ARM / Integrator: Use struct syscore_ops for core PM
  ARM / OMAP: Use struct syscore_ops for "core" power management
  ARM: Use struct syscore_ops instead of sysdevs for PM in common code

63 files changed, 395 insertions, 685 deletions

diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 113085a..7aa4262 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -22,17 +22,16 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/device.h>
 #include <linux/amba/bus.h>
 
 #include <asm/mach/irq.h>
 #include <asm/hardware/vic.h>
 
-#if defined(CONFIG_PM)
+#ifdef CONFIG_PM
 /**
  * struct vic_device - VIC PM device
- * @sysdev: The system device which is registered.
  * @irq: The IRQ number for the base of the VIC.
  * @base: The register base for the VIC.
  * @resume_sources: A bitmask of interrupts for resume.
@@ -43,8 +42,6 @@
  * @protect: Save for VIC_PROTECT.
  */
 struct vic_device {
-	struct sys_device sysdev;
-
 	void __iomem	*base;
 	int		irq;
 	u32		resume_sources;
@@ -59,11 +56,6 @@ struct vic_device {
 static struct vic_device vic_devices[CONFIG_ARM_VIC_NR];
 
 static int vic_id;
-
-static inline struct vic_device *to_vic(struct sys_device *sys)
-{
-	return container_of(sys, struct vic_device, sysdev);
-}
 #endif /* CONFIG_PM */
 
 /**
@@ -85,10 +77,9 @@ static void vic_init2(void __iomem *base)
 	writel(32, base + VIC_PL190_DEF_VECT_ADDR);
 }
 
-#if defined(CONFIG_PM)
-static int vic_class_resume(struct sys_device *dev)
+#ifdef CONFIG_PM
+static void resume_one_vic(struct vic_device *vic)
 {
-	struct vic_device *vic = to_vic(dev);
 	void __iomem *base = vic->base;
 
 	printk(KERN_DEBUG "%s: resuming vic at %p\n", __func__, base);
@@ -107,13 +98,18 @@ static int vic_class_resume(struct sys_device *dev)
 
 	writel(vic->soft_int, base + VIC_INT_SOFT);
 	writel(~vic->soft_int, base + VIC_INT_SOFT_CLEAR);
+}
 
-	return 0;
+static void vic_resume(void)
+{
+	int id;
+
+	for (id = vic_id - 1; id >= 0; id--)
+		resume_one_vic(vic_devices + id);
 }
 
-static int vic_class_suspend(struct sys_device *dev, pm_message_t state)
+static void suspend_one_vic(struct vic_device *vic)
 {
-	struct vic_device *vic = to_vic(dev);
 	void __iomem *base = vic->base;
 
 	printk(KERN_DEBUG "%s: suspending vic at %p\n", __func__, base);
@@ -128,14 +124,21 @@ static int vic_class_suspend(struct sys_device *dev, pm_message_t state)
 
 	writel(vic->resume_irqs, base + VIC_INT_ENABLE);
 	writel(~vic->resume_irqs, base + VIC_INT_ENABLE_CLEAR);
+}
+
+static int vic_suspend(void)
+{
+	int id;
+
+	for (id = 0; id < vic_id; id++)
+		suspend_one_vic(vic_devices + id);
 
 	return 0;
 }
 
-struct sysdev_class vic_class = {
-	.name		= "vic",
-	.suspend	= vic_class_suspend,
-	.resume		= vic_class_resume,
+struct syscore_ops vic_syscore_ops = {
+	.suspend	= vic_suspend,
+	.resume		= vic_resume,
 };
 
 /**
@@ -147,30 +150,8 @@ struct sysdev_class vic_class = {
 */
 static int __init vic_pm_init(void)
 {
-	struct vic_device *dev = vic_devices;
-	int err;
-	int id;
-
-	if (vic_id == 0)
-		return 0;
-
-	err = sysdev_class_register(&vic_class);
-	if (err) {
-		printk(KERN_ERR "%s: cannot register class\n", __func__);
-		return err;
-	}
-
-	for (id = 0; id < vic_id; id++, dev++) {
-		dev->sysdev.id = id;
-		dev->sysdev.cls = &vic_class;
-
-		err = sysdev_register(&dev->sysdev);
-		if (err) {
-			printk(KERN_ERR "%s: failed to register device\n",
-			       __func__);
-			return err;
-		}
-	}
+	if (vic_id > 0)
+		register_syscore_ops(&vic_syscore_ops);
 
 	return 0;
 }
diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
index 883f6be..d5adaae 100644
--- a/arch/arm/include/asm/mach/time.h
+++ b/arch/arm/include/asm/mach/time.h
@@ -34,7 +34,6 @@
  *   timer interrupt which may be pending.
  */
 struct sys_timer {
-	struct sys_device	dev;
 	void			(*init)(void);
 	void			(*suspend)(void);
 	void			(*resume)(void);
diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c
index 31a316c..0f107dc 100644
--- a/arch/arm/kernel/leds.c
+++ b/arch/arm/kernel/leds.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <asm/leds.h>
 
@@ -69,36 +70,37 @@ static ssize_t leds_store(struct sys_device *dev,
 
 static SYSDEV_ATTR(event, 0200, NULL, leds_store);
 
-static int leds_suspend(struct sys_device *dev, pm_message_t state)
+static struct sysdev_class leds_sysclass = {
+	.name		= "leds",
+};
+
+static struct sys_device leds_device = {
+	.id		= 0,
+	.cls		= &leds_sysclass,
+};
+
+static int leds_suspend(void)
 {
 	leds_event(led_stop);
 	return 0;
 }
 
-static int leds_resume(struct sys_device *dev)
+static void leds_resume(void)
 {
 	leds_event(led_start);
-	return 0;
 }
 
-static int leds_shutdown(struct sys_device *dev)
+static void leds_shutdown(void)
 {
 	leds_event(led_halted);
-	return 0;
 }
 
-static struct sysdev_class leds_sysclass = {
-	.name		= "leds",
+static struct syscore_ops leds_syscore_ops = {
 	.shutdown	= leds_shutdown,
 	.suspend	= leds_suspend,
 	.resume		= leds_resume,
 };
 
-static struct sys_device leds_device = {
-	.id		= 0,
-	.cls		= &leds_sysclass,
-};
-
 static int __init leds_init(void)
 {
 	int ret;
@@ -107,6 +109,8 @@ static int __init leds_init(void)
 		ret = sysdev_register(&leds_device);
 	if (ret == 0)
 		ret = sysdev_create_file(&leds_device, &attr_event);
+	if (ret == 0)
+		register_syscore_ops(&leds_syscore_ops);
 	return ret;
 }
 
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 1ff46ca..cb634c3 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -21,7 +21,7 @@
 #include <linux/timex.h>
 #include <linux/errno.h>
 #include <linux/profile.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/timer.h>
 #include <linux/irq.h>
 
@@ -115,48 +115,37 @@ void timer_tick(void)
 #endif
 
 #if defined(CONFIG_PM) && !defined(CONFIG_GENERIC_CLOCKEVENTS)
-static int timer_suspend(struct sys_device *dev, pm_message_t state)
+static int timer_suspend(void)
 {
-	struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
-
-	if (timer->suspend != NULL)
-		timer->suspend();
+	if (system_timer->suspend)
+		system_timer->suspend();
 
 	return 0;
 }
 
-static int timer_resume(struct sys_device *dev)
+static void timer_resume(void)
 {
-	struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
-
-	if (timer->resume != NULL)
-		timer->resume();
-
-	return 0;
+	if (system_timer->resume)
+		system_timer->resume();
 }
 #else
 #define timer_suspend NULL
 #define timer_resume NULL
 #endif
 
-static struct sysdev_class timer_sysclass = {
-	.name		= "timer",
+static struct syscore_ops timer_syscore_ops = {
 	.suspend	= timer_suspend,
 	.resume		= timer_resume,
 };
 
-static int __init timer_init_sysfs(void)
+static int __init timer_init_syscore_ops(void)
 {
-	int ret = sysdev_class_register(&timer_sysclass);
-	if (ret == 0) {
-		system_timer->dev.cls = &timer_sysclass;
-		ret = sysdev_register(&system_timer->dev);
-	}
+	register_syscore_ops(&timer_syscore_ops);
 
-	return ret;
+	return 0;
 }
 
-device_initcall(timer_init_sysfs);
+device_initcall(timer_init_syscore_ops);
 
 void __init time_init(void)
 {
diff --git a/arch/arm/mach-exynos4/pm.c b/arch/arm/mach-exynos4/pm.c
index 10d917d..8755ca8 100644
--- a/arch/arm/mach-exynos4/pm.c
+++ b/arch/arm/mach-exynos4/pm.c
@@ -16,6 +16,7 @@
 
 #include <linux/init.h>
 #include <linux/suspend.h>
+#include <linux/syscore_ops.h>
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
@@ -372,7 +373,27 @@ void exynos4_scu_enable(void __iomem *scu_base)
 	flush_cache_all();
 }
 
-static int exynos4_pm_resume(struct sys_device *dev)
+static struct sysdev_driver exynos4_pm_driver = {
+	.add		= exynos4_pm_add,
+};
+
+static __init int exynos4_pm_drvinit(void)
+{
+	unsigned int tmp;
+
+	s3c_pm_init();
+
+	/* All wakeup disable */
+
+	tmp = __raw_readl(S5P_WAKEUP_MASK);
+	tmp |= ((0xFF << 8) | (0x1F << 1));
+	__raw_writel(tmp, S5P_WAKEUP_MASK);
+
+	return sysdev_driver_register(&exynos4_sysclass, &exynos4_pm_driver);
+}
+arch_initcall(exynos4_pm_drvinit);
+
+static void exynos4_pm_resume(void)
 {
 	/* For release retention */
 
@@ -394,27 +415,15 @@ static int exynos4_pm_resume(struct sys_device *dev)
 	/* enable L2X0*/
 	writel_relaxed(1, S5P_VA_L2CC + L2X0_CTRL);
 #endif
-
-	return 0;
 }
 
-static struct sysdev_driver exynos4_pm_driver = {
-	.add		= exynos4_pm_add,
+static struct syscore_ops exynos4_pm_syscore_ops = {
 	.resume		= exynos4_pm_resume,
 };
 
-static __init int exynos4_pm_drvinit(void)
+static __init int exynos4_pm_syscore_init(void)
 {
-	unsigned int tmp;
-
-	s3c_pm_init();
-
-	/* All wakeup disable */
-
-	tmp = __raw_readl(S5P_WAKEUP_MASK);
-	tmp |= ((0xFF << 8) | (0x1F << 1));
-	__raw_writel(tmp, S5P_WAKEUP_MASK);
-
-	return sysdev_driver_register(&exynos4_sysclass, &exynos4_pm_driver);
+	register_syscore_ops(&exynos4_pm_syscore_ops);
+	return 0;
 }
-arch_initcall(exynos4_pm_drvinit);
+arch_initcall(exynos4_pm_syscore_init);
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 980803f..d3e9645 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -24,7 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/string.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/kmi.h>
 #include <linux/clocksource.h>
@@ -180,13 +180,13 @@ static void __init ap_init_irq(void)
 #ifdef CONFIG_PM
 static unsigned long ic_irq_enable;
 
-static int irq_suspend(struct sys_device *dev, pm_message_t state)
+static int irq_suspend(void)
 {
 	ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE);
 	return 0;
 }
 
-static int irq_resume(struct sys_device *dev)
+static void irq_resume(void)
 {
 	/* disable all irq sources */
 	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
@@ -194,33 +194,25 @@ static int irq_resume(struct sys_device *dev)
 	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
 
 	writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET);
-	return 0;
 }
 #else
 #define irq_suspend NULL
 #define irq_resume NULL
 #endif
 
-static struct sysdev_class irq_class = {
-	.name		= "irq",
+static struct syscore_ops irq_syscore_ops = {
 	.suspend	= irq_suspend,
 	.resume		= irq_resume,
 };
 
-static struct sys_device irq_device = {
-	.id	= 0,
-	.cls	= &irq_class,
-};
-
-static int __init irq_init_sysfs(void)
+static int __init irq_syscore_init(void)
 {
-	int ret = sysdev_class_register(&irq_class);
-	if (ret == 0)
-		ret = sysdev_register(&irq_device);
-	return ret;
+	register_syscore_ops(&irq_syscore_ops);
+
+	return 0;
 }
 
-device_initcall(irq_init_sysfs);
+device_initcall(irq_syscore_init);
 
 /*
  * Flash handling.
diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
index bfbecec..810a982 100644
--- a/arch/arm/mach-pxa/balloon3.c
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -15,7 +15,6 @@
 
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
diff --git a/arch/arm/mach-pxa/clock-pxa2xx.c b/arch/arm/mach-pxa/clock-pxa2xx.c
index 1ce0904..1d5859d 100644
--- a/arch/arm/mach-pxa/clock-pxa2xx.c
+++ b/arch/arm/mach-pxa/clock-pxa2xx.c
@@ -9,7 +9,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/pxa2xx-regs.h>
 
@@ -33,32 +33,22 @@ const struct clkops clk_pxa2xx_cken_ops = {
 #ifdef CONFIG_PM
 static uint32_t saved_cken;
 
-static int pxa2xx_clock_suspend(struct sys_device *d, pm_message_t state)
+static int pxa2xx_clock_suspend(void)
 {
 	saved_cken = CKEN;
 	return 0;
 }
 
-static int pxa2xx_clock_resume(struct sys_device *d)
+static void pxa2xx_clock_resume(void)
 {
 	CKEN = saved_cken;
-	return 0;
 }
 #else
 #define pxa2xx_clock_suspend	NULL
 #define pxa2xx_clock_resume	NULL
 #endif
 
-struct sysdev_class pxa2xx_clock_sysclass = {
-	.name		= "pxa2xx-clock",
+struct syscore_ops pxa2xx_clock_syscore_ops = {
 	.suspend	= pxa2xx_clock_suspend,
 	.resume		= pxa2xx_clock_resume,
 };
-
-static int __init pxa2xx_clock_init(void)
-{
-	if (cpu_is_pxa2xx())
-		return sysdev_class_register(&pxa2xx_clock_sysclass);
-	return 0;
-}
-postcore_initcall(pxa2xx_clock_init);
diff --git a/arch/arm/mach-pxa/clock-pxa3xx.c b/arch/arm/mach-pxa/clock-pxa3xx.c
index 3f864cd..2a37a9a 100644
--- a/arch/arm/mach-pxa/clock-pxa3xx.c
+++ b/arch/arm/mach-pxa/clock-pxa3xx.c
@@ -10,6 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/smemc.h>
 #include <mach/pxa3xx-regs.h>
@@ -182,7 +183,7 @@ const struct clkops clk_pxa3xx_pout_ops = {
 static uint32_t cken[2];
 static uint32_t accr;
 
-static int pxa3xx_clock_suspend(struct sys_device *d, pm_message_t state)
+static int pxa3xx_clock_suspend(void)
 {
 	cken[0] = CKENA;
 	cken[1] = CKENB;
@@ -190,28 +191,18 @@ static int pxa3xx_clock_suspend(struct sys_device *d, pm_message_t state)
 	return 0;
 }
 
-static int pxa3xx_clock_resume(struct sys_device *d)
+static void pxa3xx_clock_resume(void)
 {
 	ACCR = accr;
 	CKENA = cken[0];
 	CKENB = cken[1];
-	return 0;
 }
 #else
 #define pxa3xx_clock_suspend	NULL
 #define pxa3xx_clock_resume	NULL
 #endif
 
-struct sysdev_class pxa3xx_clock_sysclass = {
-	.name		= "pxa3xx-clock",
+struct syscore_ops pxa3xx_clock_syscore_ops = {
 	.suspend	= pxa3xx_clock_suspend,
 	.resume		= pxa3xx_clock_resume,
 };
-
-static int __init pxa3xx_clock_init(void)
-{
-	if (cpu_is_pxa3xx() || cpu_is_pxa95x())
-		return sysdev_class_register(&pxa3xx_clock_sysclass);
-	return 0;
-}
-postcore_initcall(pxa3xx_clock_init);
diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
index f9f349a..1f2fb9c 100644
--- a/arch/arm/mach-pxa/clock.h
+++ b/arch/arm/mach-pxa/clock.h
@@ -1,5 +1,5 @@
 #include <linux/clkdev.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 struct clkops {
 	void			(*enable)(struct clk *);
@@ -54,7 +54,7 @@ extern const struct clkops clk_pxa2xx_cken_ops;
 void clk_pxa2xx_cken_enable(struct clk *clk);
 void clk_pxa2xx_cken_disable(struct clk *clk);
 
-extern struct sysdev_class pxa2xx_clock_sysclass;
+extern struct syscore_ops pxa2xx_clock_syscore_ops;
 
 #if defined(CONFIG_PXA3xx) || defined(CONFIG_PXA95x)
 #define DEFINE_PXA3_CKEN(_name, _cken, _rate, _delay)	\
@@ -74,5 +74,6 @@ extern const struct clkops clk_pxa3xx_smemc_ops;
 extern void clk_pxa3xx_cken_enable(struct clk *);
 extern void clk_pxa3xx_cken_disable(struct clk *);
 
-extern struct sysdev_class pxa3xx_clock_sysclass;
+extern struct syscore_ops pxa3xx_clock_syscore_ops;
+
 #endif
diff --git a/arch/arm/mach-pxa/cm-x270.c b/arch/arm/mach-pxa/cm-x270.c
index b88d601a..13518a7 100644
--- a/arch/arm/mach-pxa/cm-x270.c
+++ b/arch/arm/mach-pxa/cm-x270.c
@@ -10,7 +10,6 @@
  */
 
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
 #include <linux/delay.h>
diff --git a/arch/arm/mach-pxa/cm-x2xx.c b/arch/arm/mach-pxa/cm-x2xx.c
index 8225e2e..a109967 100644
--- a/arch/arm/mach-pxa/cm-x2xx.c
+++ b/arch/arm/mach-pxa/cm-x2xx.c
@@ -10,7 +10,7 @@
  */
 
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/irq.h>
 #include <linux/gpio.h>
 
@@ -388,7 +388,7 @@ static inline void cmx2xx_init_display(void) {}
 #ifdef CONFIG_PM
 static unsigned long sleep_save_msc[10];
 
-static int cmx2xx_suspend(struct sys_device *dev, pm_message_t state)
+static int cmx2xx_suspend(void)
 {
 	cmx2xx_pci_suspend();
 
@@ -412,7 +412,7 @@ static int cmx2xx_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int cmx2xx_resume(struct sys_device *dev)
+static void cmx2xx_resume(void)
 {
 	cmx2xx_pci_resume();
 
@@ -420,27 +420,18 @@ static int cmx2xx_resume(struct sys_device *dev)
 	__raw_writel(sleep_save_msc[0], MSC0);
 	__raw_writel(sleep_save_msc[1], MSC1);
 	__raw_writel(sleep_save_msc[2], MSC2);
-
-	return 0;
 }
 
-static struct sysdev_class cmx2xx_pm_sysclass = {
-	.name = "pm",
+static struct syscore_ops cmx2xx_pm_syscore_ops = {
 	.resume = cmx2xx_resume,
 	.suspend = cmx2xx_suspend,
 };
 
-static struct sys_device cmx2xx_pm_device = {
-	.cls = &cmx2xx_pm_sysclass,
-};
-
 static int __init cmx2xx_pm_init(void)
 {
-	int error;
-	error = sysdev_class_register(&cmx2xx_pm_sysclass);
-	if (error == 0)
-		error = sysdev_register(&cmx2xx_pm_device);
-	return error;
+	register_syscore_ops(&cmx2xx_pm_syscore_ops);
+
+	return 0;
 }
 #else
 static int __init cmx2xx_pm_init(void) { return 0; }
diff --git a/arch/arm/mach-pxa/colibri-evalboard.c b/arch/arm/mach-pxa/colibri-evalboard.c
index 81c3c43..d28e802 100644
--- a/arch/arm/mach-pxa/colibri-evalboard.c
+++ b/arch/arm/mach-pxa/colibri-evalboard.c
@@ -13,7 +13,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
 #include <asm/mach-types.h>
diff --git a/arch/arm/mach-pxa/colibri-pxa270-income.c b/arch/arm/mach-pxa/colibri-pxa270-income.c
index 44c1b77..80538b8 100644
--- a/arch/arm/mach-pxa/colibri-pxa270-income.c
+++ b/arch/arm/mach-pxa/colibri-pxa270-income.c
@@ -22,7 +22,6 @@
 #include <linux/platform_device.h>
 #include <linux/pwm_backlight.h>
 #include <linux/i2c/pxa-i2c.h>
-#include <linux/sysdev.h>
 
 #include <asm/irq.h>
 #include <asm/mach-types.h>
diff --git a/arch/arm/mach-pxa/colibri-pxa270.c b/arch/arm/mach-pxa/colibri-pxa270.c
index 6fc5d32..7545a48 100644
--- a/arch/arm/mach-pxa/colibri-pxa270.c
+++ b/arch/arm/mach-pxa/colibri-pxa270.c
@@ -17,7 +17,6 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/ucb1400.h>
 
 #include <asm/mach/arch.h>
diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h
index a079d8b..e6c9344 100644
--- a/arch/arm/mach-pxa/generic.h
+++ b/arch/arm/mach-pxa/generic.h
@@ -61,10 +61,10 @@ extern unsigned pxa3xx_get_clk_frequency_khz(int);
 #define pxa3xx_get_clk_frequency_khz(x)		(0)
 #endif
 
-extern struct sysdev_class pxa_irq_sysclass;
-extern struct sysdev_class pxa_gpio_sysclass;
-extern struct sysdev_class pxa2xx_mfp_sysclass;
-extern struct sysdev_class pxa3xx_mfp_sysclass;
+extern struct syscore_ops pxa_irq_syscore_ops;
+extern struct syscore_ops pxa_gpio_syscore_ops;
+extern struct syscore_ops pxa2xx_mfp_syscore_ops;
+extern struct syscore_ops pxa3xx_mfp_syscore_ops;
 
 void __init pxa_set_ffuart_info(void *info);
 void __init pxa_set_btuart_info(void *info);
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 6251e3f..32ed551 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -15,7 +15,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/io.h>
 #include <linux/irq.h>
 
@@ -183,7 +183,7 @@ void __init pxa_init_irq(int irq_nr, set_wake_t fn)
 static unsigned long saved_icmr[MAX_INTERNAL_IRQS/32];
 static unsigned long saved_ipr[MAX_INTERNAL_IRQS];
 
-static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
+static int pxa_irq_suspend(void)
 {
 	int i;
 
@@ -202,7 +202,7 @@ static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int pxa_irq_resume(struct sys_device *dev)
+static void pxa_irq_resume(void)
 {
 	int i;
 
@@ -218,22 +218,13 @@ static int pxa_irq_resume(struct sys_device *dev)
 			__raw_writel(saved_ipr[i], IRQ_BASE + IPR(i));
 
 	__raw_writel(1, IRQ_BASE + ICCR);
-	return 0;
 }
 #else
 #define pxa_irq_suspend		NULL
 #define pxa_irq_resume		NULL
 #endif
 
-struct sysdev_class pxa_irq_sysclass = {
-	.name		= "irq",
+struct syscore_ops pxa_irq_syscore_ops = {
 	.suspend	= pxa_irq_suspend,
 	.resume		= pxa_irq_resume,
 };
-
-static int __init pxa_irq_init(void)
-{
-	return sysdev_class_register(&pxa_irq_sysclass);
-}
-
-core_initcall(pxa_irq_init);
diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
index f5de541..6cf8180 100644
--- a/arch/arm/mach-pxa/lpd270.c
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -15,7 +15,7 @@
 
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
@@ -159,30 +159,22 @@ static void __init lpd270_init_irq(void)
 
 
 #ifdef CONFIG_PM
-static int lpd270_irq_resume(struct sys_device *dev)
+static void lpd270_irq_resume(void)
 {
 	__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
-	return 0;
 }
 
-static struct sysdev_class lpd270_irq_sysclass = {
-	.name = "cpld_irq",
+static struct syscore_ops lpd270_irq_syscore_ops = {
 	.resume = lpd270_irq_resume,
 };
 
-static struct sys_device lpd270_irq_device = {
-	.cls = &lpd270_irq_sysclass,
-};
-
 static int __init lpd270_irq_device_init(void)
 {
-	int ret = -ENODEV;
 	if (machine_is_logicpd_pxa270()) {
-		ret = sysdev_class_register(&lpd270_irq_sysclass);
-		if (ret == 0)
-			ret = sysdev_register(&lpd270_irq_device);
+		register_syscore_ops(&lpd270_irq_syscore_ops);
+		return 0;
 	}
-	return ret;
+	return -ENODEV;
 }
 
 device_initcall(lpd270_irq_device_init);
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 3ede978..e10ddb8 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -15,7 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/major.h>
 #include <linux/fb.h>
 #include <linux/interrupt.h>
@@ -176,31 +176,22 @@ static void __init lubbock_init_irq(void)
 
 #ifdef CONFIG_PM
 
-static int lubbock_irq_resume(struct sys_device *dev)
+static void lubbock_irq_resume(void)
 {
 	LUB_IRQ_MASK_EN = lubbock_irq_enabled;
-	return 0;
 }
 
-static struct sysdev_class lubbock_irq_sysclass = {
-	.name = "cpld_irq",
+static struct syscore_ops lubbock_irq_syscore_ops = {
 	.resume = lubbock_irq_resume,
 };
 
-static struct sys_device lubbock_irq_device = {
-	.cls = &lubbock_irq_sysclass,
-};
-
 static int __init lubbock_irq_device_init(void)
 {
-	int ret = -ENODEV;
-
 	if (machine_is_lubbock()) {
-		ret = sysdev_class_register(&lubbock_irq_sysclass);
-		if (ret == 0)
-			ret = sysdev_register(&lubbock_irq_device);
+		register_syscore_ops(&lubbock_irq_syscore_ops);
+		return 0;
 	}
-	return ret;
+	return -ENODEV;
 }
 
 device_initcall(lubbock_irq_device_init);
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 95163ba..3479e2b 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -15,7 +15,7 @@
 
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
@@ -185,31 +185,21 @@ static void __init mainstone_init_irq(void)
 
 #ifdef CONFIG_PM
 
-static int mainstone_irq_resume(struct sys_device *dev)
+static void mainstone_irq_resume(void)
 {
 	MST_INTMSKENA = mainstone_irq_enabled;
-	return 0;
 }
 
-static struct sysdev_class mainstone_irq_sysclass = {
-	.name = "cpld_irq",
+static struct syscore_ops mainstone_irq_syscore_ops = {
 	.resume = mainstone_irq_resume,
 };
 
-static struct sys_device mainstone_irq_device = {
-	.cls = &mainstone_irq_sysclass,
-};
-
 static int __init mainstone_irq_device_init(void)
 {
-	int ret = -ENODEV;
+	if (machine_is_mainstone())
+		register_syscore_ops(&mainstone_irq_syscore_ops);
 
-	if (machine_is_mainstone()) {
-		ret = sysdev_class_register(&mainstone_irq_sysclass);
-		if (ret == 0)
-			ret = sysdev_register(&mainstone_irq_device);
-	}
-	return ret;
+	return 0;
 }
 
 device_initcall(mainstone_irq_device_init);
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c
index 1d1419b..87ae312 100644
--- a/arch/arm/mach-pxa/mfp-pxa2xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa2xx.c
@@ -16,7 +16,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/gpio.h>
 #include <mach/pxa2xx-regs.h>
@@ -338,7 +338,7 @@ static unsigned long saved_gafr[2][4];
 static unsigned long saved_gpdr[4];
 static unsigned long saved_pgsr[4];
 
-static int pxa2xx_mfp_suspend(struct sys_device *d, pm_message_t state)
+static int pxa2xx_mfp_suspend(void)
 {
 	int i;
 
@@ -365,7 +365,7 @@ static int pxa2xx_mfp_suspend(struct sys_device *d, pm_message_t state)
 	return 0;
 }
 
-static int pxa2xx_mfp_resume(struct sys_device *d)
+static void pxa2xx_mfp_resume(void)
 {
 	int i;
 
@@ -376,15 +376,13 @@ static int pxa2xx_mfp_resume(struct sys_device *d)
 		PGSR(i) = saved_pgsr[i];
 	}
 	PSSR = PSSR_RDH | PSSR_PH;
-	return 0;
 }
 #else
 #define pxa2xx_mfp_suspend	NULL
 #define pxa2xx_mfp_resume	NULL
 #endif
 
-struct sysdev_class pxa2xx_mfp_sysclass = {
-	.name		= "mfp",
+struct syscore_ops pxa2xx_mfp_syscore_ops = {
 	.suspend	= pxa2xx_mfp_suspend,
 	.resume		= pxa2xx_mfp_resume,
 };
@@ -409,6 +407,6 @@ static int __init pxa2xx_mfp_init(void)
 	for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++)
 		gpdr_lpm[i] = GPDR(i * 32);
 
-	return sysdev_class_register(&pxa2xx_mfp_sysclass);
+	return 0;
 }
 postcore_initcall(pxa2xx_mfp_init);
diff --git a/arch/arm/mach-pxa/mfp-pxa3xx.c b/arch/arm/mach-pxa/mfp-pxa3xx.c
index 7a270ee..89863a0 100644
--- a/arch/arm/mach-pxa/mfp-pxa3xx.c
+++ b/arch/arm/mach-pxa/mfp-pxa3xx.c
@@ -17,7 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/hardware.h>
 #include <mach/mfp-pxa3xx.h>
@@ -31,13 +31,13 @@
  * a pull-down mode if they're an active low chip select, and we're
  * just entering standby.
  */
-static int pxa3xx_mfp_suspend(struct sys_device *d, pm_message_t state)
+static int pxa3xx_mfp_suspend(void)
 {
 	mfp_config_lpm();
 	return 0;
 }
 
-static int pxa3xx_mfp_resume(struct sys_device *d)
+static void pxa3xx_mfp_resume(void)
 {
 	mfp_config_run();
 
@@ -47,24 +47,13 @@ static int pxa3xx_mfp_resume(struct sys_device *d)
 	 * preserve them here in case they will be referenced later
 	 */
 	ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
-	return 0;
 }
 #else
 #define pxa3xx_mfp_suspend	NULL
 #define pxa3xx_mfp_resume	NULL
 #endif
 
-struct sysdev_class pxa3xx_mfp_sysclass = {
-	.name		= "mfp",
+struct syscore_ops pxa3xx_mfp_syscore_ops = {
 	.suspend	= pxa3xx_mfp_suspend,
-	.resume 	= pxa3xx_mfp_resume,
+	.resume		= pxa3xx_mfp_resume,
 };
-
-static int __init mfp_init_devicefs(void)
-{
-	if (cpu_is_pxa3xx())
-		return sysdev_class_register(&pxa3xx_mfp_sysclass);
-
-	return 0;
-}
-postcore_initcall(mfp_init_devicefs);
diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index 23925db..e347013 100644
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/arch/arm/mach-pxa/mioa701.c
@@ -22,7 +22,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/input.h>
 #include <linux/delay.h>
 #include <linux/gpio_keys.h>
@@ -488,7 +488,7 @@ static void install_bootstrap(void)
 }
 
 
-static int mioa701_sys_suspend(struct sys_device *sysdev, pm_message_t state)
+static int mioa701_sys_suspend(void)
 {
 	int i = 0, is_bt_on;
 	u32 *mem_resume_vector	= phys_to_virt(RESUME_VECTOR_ADDR);
@@ -514,7 +514,7 @@ static int mioa701_sys_suspend(struct sys_device *sysdev, pm_message_t state)
 	return 0;
 }
 
-static int mioa701_sys_resume(struct sys_device *sysdev)
+static void mioa701_sys_resume(void)
 {
 	int i = 0;
 	u32 *mem_resume_vector	= phys_to_virt(RESUME_VECTOR_ADDR);
@@ -527,43 +527,18 @@ static int mioa701_sys_resume(struct sys_device *sysdev)
 	*mem_resume_enabler = save_buffer[i++];
 	*mem_resume_bt	    = save_buffer[i++];
 	*mem_resume_unknown = save_buffer[i++];
-
-	return 0;
 }
 
-static struct sysdev_class mioa701_sysclass = {
-	.name = "mioa701",
-};
-
-static struct sys_device sysdev_bootstrap = {
-	.cls		= &mioa701_sysclass,
-};
-
-static struct sysdev_driver driver_bootstrap = {
-	.suspend	= &mioa701_sys_suspend,
-	.resume		= &mioa701_sys_resume,
+static struct syscore_ops mioa701_syscore_ops = {
+	.suspend	= mioa701_sys_suspend,
+	.resume		= mioa701_sys_resume,
 };
 
 static int __init bootstrap_init(void)
 {
-	int rc;
 	int save_size = mioa701_bootstrap_lg + (sizeof(u32) * 3);
 
-	rc = sysdev_class_register(&mioa701_sysclass);
-	if (rc) {
-		printk(KERN_ERR "Failed registering mioa701 sys class\n");
-		return -ENODEV;
-	}
-	rc = sysdev_register(&sysdev_bootstrap);
-	if (rc) {
-		printk(KERN_ERR "Failed registering mioa701 sys device\n");
-		return -ENODEV;
-	}
-	rc = sysdev_driver_register(&mioa701_sysclass, &driver_bootstrap);
-	if (rc) {
-		printk(KERN_ERR "Failed registering PMU sys driver\n");
-		return -ENODEV;
-	}
+	register_syscore_ops(&mioa701_syscore_ops);
 
 	save_buffer = kmalloc(save_size, GFP_KERNEL);
 	if (!save_buffer)
@@ -576,9 +551,7 @@ static int __init bootstrap_init(void)
 static void bootstrap_exit(void)
 {
 	kfree(save_buffer);
-	sysdev_driver_unregister(&mioa701_sysclass, &driver_bootstrap);
-	sysdev_unregister(&sysdev_bootstrap);
-	sysdev_class_unregister(&mioa701_sysclass);
+	unregister_syscore_ops(&mioa701_syscore_ops);
 
 	printk(KERN_CRIT "Unregistering mioa701 suspend will hang next"
 	       "resume !!!\n");
diff --git a/arch/arm/mach-pxa/palmld.c b/arch/arm/mach-pxa/palmld.c
index a6f898c..4061ecd 100644
--- a/arch/arm/mach-pxa/palmld.c
+++ b/arch/arm/mach-pxa/palmld.c
@@ -24,7 +24,6 @@
 #include <linux/gpio.h>
 #include <linux/wm97xx.h>
 #include <linux/power_supply.h>
-#include <linux/sysdev.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
diff --git a/arch/arm/mach-pxa/palmtreo.c b/arch/arm/mach-pxa/palmtreo.c
index 8aadad5..20d1b18 100644
--- a/arch/arm/mach-pxa/palmtreo.c
+++ b/arch/arm/mach-pxa/palmtreo.c
@@ -25,7 +25,6 @@
 #include <linux/pwm_backlight.h>
 #include <linux/gpio.h>
 #include <linux/power_supply.h>
-#include <linux/sysdev.h>
 #include <linux/w1-gpio.h>
 
 #include <asm/mach-types.h>
diff --git a/arch/arm/mach-pxa/palmz72.c b/arch/arm/mach-pxa/palmz72.c
index 3b8a4f3..65f24f0 100644
--- a/arch/arm/mach-pxa/palmz72.c
+++ b/arch/arm/mach-pxa/palmz72.c
@@ -19,7 +19,7 @@
  */
 
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/gpio_keys.h>
@@ -233,9 +233,9 @@ static struct palmz72_resume_info palmz72_resume_info = {
 
 static unsigned long store_ptr;
 
-/* sys_device for Palm Zire 72 PM */
+/* syscore_ops for Palm Zire 72 PM */
 
-static int palmz72_pm_suspend(struct sys_device *dev, pm_message_t msg)
+static int palmz72_pm_suspend(void)
 {
 	/* setup the resume_info struct for the original bootloader */
 	palmz72_resume_info.resume_addr = (u32) cpu_resume;
@@ -249,31 +249,23 @@ static int palmz72_pm_suspend(struct sys_device *dev, pm_message_t msg)
 	return 0;
 }
 
-static int palmz72_pm_resume(struct sys_device *dev)
+static void palmz72_pm_resume(void)
 {
 	*PALMZ72_SAVE_DWORD = store_ptr;
-	return 0;
 }
 
-static struct sysdev_class palmz72_pm_sysclass = {
-	.name = "palmz72_pm",
+static struct syscore_ops palmz72_pm_syscore_ops = {
 	.suspend = palmz72_pm_suspend,
 	.resume = palmz72_pm_resume,
 };
 
-static struct sys_device palmz72_pm_device = {
-	.cls = &palmz72_pm_sysclass,
-};
-
 static int __init palmz72_pm_init(void)
 {
-	int ret = -ENODEV;
 	if (machine_is_palmz72()) {
-		ret = sysdev_class_register(&palmz72_pm_sysclass);
-		if (ret == 0)
-			ret = sysdev_register(&palmz72_pm_device);
+		register_syscore_ops(&palmz72_pm_syscore_ops);
+		return 0;
 	}
-	return ret;
+	return -ENODEV;
 }
 
 device_initcall(palmz72_pm_init);
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index a4af8c5..fed363c 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -21,7 +21,7 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/suspend.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/irq.h>
 
 #include <asm/mach/map.h>
@@ -350,21 +350,9 @@ static struct platform_device *pxa25x_devices[] __initdata = {
 	&pxa_device_asoc_platform,
 };
 
-static struct sys_device pxa25x_sysdev[] = {
-	{
-		.cls	= &pxa_irq_sysclass,
-	}, {
-		.cls	= &pxa2xx_mfp_sysclass,
-	}, {
-		.cls	= &pxa_gpio_sysclass,
-	}, {
-		.cls	= &pxa2xx_clock_sysclass,
-	}
-};
-
 static int __init pxa25x_init(void)
 {
-	int i, ret = 0;
+	int ret = 0;
 
 	if (cpu_is_pxa25x()) {
 
@@ -377,11 +365,10 @@ static int __init pxa25x_init(void)
 
 		pxa25x_init_pm();
 
-		for (i = 0; i < ARRAY_SIZE(pxa25x_sysdev); i++) {
-			ret = sysdev_register(&pxa25x_sysdev[i]);
-			if (ret)
-				pr_err("failed to register sysdev[%d]\n", i);
-		}
+		register_syscore_ops(&pxa_irq_syscore_ops);
+		register_syscore_ops(&pxa2xx_mfp_syscore_ops);
+		register_syscore_ops(&pxa_gpio_syscore_ops);
+		register_syscore_ops(&pxa2xx_clock_syscore_ops);
 
 		ret = platform_add_devices(pxa25x_devices,
 					   ARRAY_SIZE(pxa25x_devices));
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 909756e..2fecbec 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -16,7 +16,7 @@
 #include <linux/init.h>
 #include <linux/suspend.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/i2c/pxa-i2c.h>
@@ -428,21 +428,9 @@ static struct platform_device *devices[] __initdata = {
 	&pxa27x_device_pwm1,
 };
 
-static struct sys_device pxa27x_sysdev[] = {
-	{
-		.cls	= &pxa_irq_sysclass,
-	}, {
-		.cls	= &pxa2xx_mfp_sysclass,
-	}, {
-		.cls	= &pxa_gpio_sysclass,
-	}, {
-		.cls	= &pxa2xx_clock_sysclass,
-	}
-};
-
 static int __init pxa27x_init(void)
 {
-	int i, ret = 0;
+	int ret = 0;
 
 	if (cpu_is_pxa27x()) {
 
@@ -455,11 +443,10 @@ static int __init pxa27x_init(void)
 
 		pxa27x_init_pm();
 
-		for (i = 0; i < ARRAY_SIZE(pxa27x_sysdev); i++) {
-			ret = sysdev_register(&pxa27x_sysdev[i]);
-			if (ret)
-				pr_err("failed to register sysdev[%d]\n", i);
-		}
+		register_syscore_ops(&pxa_irq_syscore_ops);
+		register_syscore_ops(&pxa2xx_mfp_syscore_ops);
+		register_syscore_ops(&pxa_gpio_syscore_ops);
+		register_syscore_ops(&pxa2xx_clock_syscore_ops);
 
 		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	}
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 8dd1073..8521d7d 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -20,7 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach/map.h>
@@ -427,21 +427,9 @@ static struct platform_device *devices[] __initdata = {
 	&pxa27x_device_pwm1,
 };
 
-static struct sys_device pxa3xx_sysdev[] = {
-	{
-		.cls	= &pxa_irq_sysclass,
-	}, {
-		.cls	= &pxa3xx_mfp_sysclass,
-	}, {
-		.cls	= &pxa_gpio_sysclass,
-	}, {
-		.cls	= &pxa3xx_clock_sysclass,
-	}
-};
-
 static int __init pxa3xx_init(void)
 {
-	int i, ret = 0;
+	int ret = 0;
 
 	if (cpu_is_pxa3xx()) {
 
@@ -462,11 +450,10 @@ static int __init pxa3xx_init(void)
 
 		pxa3xx_init_pm();
 
-		for (i = 0; i < ARRAY_SIZE(pxa3xx_sysdev); i++) {
-			ret = sysdev_register(&pxa3xx_sysdev[i]);
-			if (ret)
-				pr_err("failed to register sysdev[%d]\n", i);
-		}
+		register_syscore_ops(&pxa_irq_syscore_ops);
+		register_syscore_ops(&pxa3xx_mfp_syscore_ops);
+		register_syscore_ops(&pxa_gpio_syscore_ops);
+		register_syscore_ops(&pxa3xx_clock_syscore_ops);
 
 		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	}
diff --git a/arch/arm/mach-pxa/pxa95x.c b/arch/arm/mach-pxa/pxa95x.c
index 23b229b..ecc82a3 100644
--- a/arch/arm/mach-pxa/pxa95x.c
+++ b/arch/arm/mach-pxa/pxa95x.c
@@ -18,7 +18,7 @@
 #include <linux/i2c/pxa-i2c.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/hardware.h>
 #include <mach/gpio.h>
@@ -260,16 +260,6 @@ static struct platform_device *devices[] __initdata = {
 	&pxa27x_device_pwm1,
 };
 
-static struct sys_device pxa95x_sysdev[] = {
-	{
-		.cls	= &pxa_irq_sysclass,
-	}, {
-		.cls	= &pxa_gpio_sysclass,
-	}, {
-		.cls	= &pxa3xx_clock_sysclass,
-	}
-};
-
 static int __init pxa95x_init(void)
 {
 	int ret = 0, i;
@@ -293,11 +283,9 @@ static int __init pxa95x_init(void)
 		if ((ret = pxa_init_dma(IRQ_DMA, 32)))
 			return ret;
 
-		for (i = 0; i < ARRAY_SIZE(pxa95x_sysdev); i++) {
-			ret = sysdev_register(&pxa95x_sysdev[i]);
-			if (ret)
-				pr_err("failed to register sysdev[%d]\n", i);
-		}
+		register_syscore_ops(&pxa_irq_syscore_ops);
+		register_syscore_ops(&pxa_gpio_syscore_ops);
+		register_syscore_ops(&pxa3xx_clock_syscore_ops);
 
 		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	}
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index cd18613..d130f77 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -18,7 +18,6 @@
 
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/sysdev.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
diff --git a/arch/arm/mach-pxa/smemc.c b/arch/arm/mach-pxa/smemc.c
index 232b731..7992305 100644
--- a/arch/arm/mach-pxa/smemc.c
+++ b/arch/arm/mach-pxa/smemc.c
@@ -6,7 +6,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/hardware.h>
 #include <mach/smemc.h>
@@ -16,7 +16,7 @@ static unsigned long msc[2];
 static unsigned long sxcnfg, memclkcfg;
 static unsigned long csadrcfg[4];
 
-static int pxa3xx_smemc_suspend(struct sys_device *dev, pm_message_t state)
+static int pxa3xx_smemc_suspend(void)
 {
 	msc[0] = __raw_readl(MSC0);
 	msc[1] = __raw_readl(MSC1);
@@ -30,7 +30,7 @@ static int pxa3xx_smemc_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int pxa3xx_smemc_resume(struct sys_device *dev)
+static void pxa3xx_smemc_resume(void)
 {
 	__raw_writel(msc[0], MSC0);
 	__raw_writel(msc[1], MSC1);
@@ -40,34 +40,19 @@ static int pxa3xx_smemc_resume(struct sys_device *dev)
 	__raw_writel(csadrcfg[1], CSADRCFG1);
 	__raw_writel(csadrcfg[2], CSADRCFG2);
 	__raw_writel(csadrcfg[3], CSADRCFG3);
-
-	return 0;
 }
 
-static struct sysdev_class smemc_sysclass = {
-	.name		= "smemc",
+static struct syscore_ops smemc_syscore_ops = {
 	.suspend	= pxa3xx_smemc_suspend,
 	.resume		= pxa3xx_smemc_resume,
 };
 
-static struct sys_device smemc_sysdev = {
-	.id		= 0,
-	.cls		= &smemc_sysclass,
-};
-
 static int __init smemc_init(void)
 {
-	int ret = 0;
+	if (cpu_is_pxa3xx())
+		register_syscore_ops(&smemc_syscore_ops);
 
-	if (cpu_is_pxa3xx()) {
-		ret = sysdev_class_register(&smemc_sysclass);
-		if (ret)
-			return ret;
-
-		ret = sysdev_register(&smemc_sysdev);
-	}
-
-	return ret;
+	return 0;
 }
 subsys_initcall(smemc_init);
 #endif
diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
index b9cfbeb..687417a 100644
--- a/arch/arm/mach-pxa/trizeps4.c
+++ b/arch/arm/mach-pxa/trizeps4.c
@@ -15,7 +15,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
index b523f11..903218e 100644
--- a/arch/arm/mach-pxa/viper.c
+++ b/arch/arm/mach-pxa/viper.c
@@ -44,6 +44,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/pxa25x.h>
 #include <mach/audio.h>
@@ -130,20 +131,19 @@ static u8 viper_hw_version(void)
 	return v1;
 }
 
-/* CPU sysdev */
-static int viper_cpu_suspend(struct sys_device *sysdev, pm_message_t state)
+/* CPU system core operations. */
+static int viper_cpu_suspend(void)
 {
 	viper_icr_set_bit(VIPER_ICR_R_DIS);
 	return 0;
 }
 
-static int viper_cpu_resume(struct sys_device *sysdev)
+static void viper_cpu_resume(void)
 {
 	viper_icr_clear_bit(VIPER_ICR_R_DIS);
-	return 0;
 }
 
-static struct sysdev_driver viper_cpu_sysdev_driver = {
+static struct syscore_ops viper_cpu_syscore_ops = {
 	.suspend	= viper_cpu_suspend,
 	.resume		= viper_cpu_resume,
 };
@@ -945,7 +945,7 @@ static void __init viper_init(void)
 	viper_init_vcore_gpios();
 	viper_init_cpufreq();
 
-	sysdev_driver_register(&cpu_sysdev_class, &viper_cpu_sysdev_driver);
+	register_syscore_ops(&viper_cpu_syscore_ops);
 
 	if (version) {
 		pr_info("viper: hardware v%di%d detected. "
diff --git a/arch/arm/mach-pxa/vpac270.c b/arch/arm/mach-pxa/vpac270.c
index f71d377..67bd414 100644
--- a/arch/arm/mach-pxa/vpac270.c
+++ b/arch/arm/mach-pxa/vpac270.c
@@ -16,7 +16,6 @@
 #include <linux/gpio_keys.h>
 #include <linux/input.h>
 #include <linux/gpio.h>
-#include <linux/sysdev.h>
 #include <linux/usb/gpio_vbus.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c
index 5e2f353..2854129 100644
--- a/arch/arm/mach-s3c2410/irq.c
+++ b/arch/arm/mach-s3c2410/irq.c
@@ -23,38 +23,12 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <plat/cpu.h>
 #include <plat/pm.h>
 
-static int s3c2410_irq_add(struct sys_device *sysdev)
-{
-	return 0;
-}
-
-static struct sysdev_driver s3c2410_irq_driver = {
-	.add		= s3c2410_irq_add,
+struct syscore_ops s3c24xx_irq_syscore_ops = {
 	.suspend	= s3c24xx_irq_suspend,
 	.resume		= s3c24xx_irq_resume,
 };
-
-static int __init s3c2410_irq_init(void)
-{
-	return sysdev_driver_register(&s3c2410_sysclass, &s3c2410_irq_driver);
-}
-
-arch_initcall(s3c2410_irq_init);
-
-static struct sysdev_driver s3c2410a_irq_driver = {
-	.add		= s3c2410_irq_add,
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
-};
-
-static int __init s3c2410a_irq_init(void)
-{
-	return sysdev_driver_register(&s3c2410a_sysclass, &s3c2410a_irq_driver);
-}
-
-arch_initcall(s3c2410a_irq_init);
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 2970ea9..1e2d536 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -17,7 +17,7 @@
 #include <linux/timer.h>
 #include <linux/init.h>
 #include <linux/gpio.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/dm9000.h>
@@ -214,17 +214,16 @@ static struct s3c2410_uartcfg bast_uartcfgs[] __initdata = {
 /* NAND Flash on BAST board */
 
 #ifdef CONFIG_PM
-static int bast_pm_suspend(struct sys_device *sd, pm_message_t state)
+static int bast_pm_suspend(void)
 {
 	/* ensure that an nRESET is not generated on resume. */
 	gpio_direction_output(S3C2410_GPA(21), 1);
 	return 0;
 }
 
-static int bast_pm_resume(struct sys_device *sd)
+static void bast_pm_resume(void)
 {
 	s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
-	return 0;
 }
 
 #else
@@ -232,16 +231,11 @@ static int bast_pm_resume(struct sys_device *sd)
 #define bast_pm_resume NULL
 #endif
 
-static struct sysdev_class bast_pm_sysclass = {
-	.name		= "mach-bast",
+static struct syscore_ops bast_pm_syscore_ops = {
 	.suspend	= bast_pm_suspend,
 	.resume		= bast_pm_resume,
 };
 
-static struct sys_device bast_pm_sysdev = {
-	.cls		= &bast_pm_sysclass,
-};
-
 static int smartmedia_map[] = { 0 };
 static int chip0_map[] = { 1 };
 static int chip1_map[] = { 2 };
@@ -642,8 +636,7 @@ static void __init bast_map_io(void)
 
 static void __init bast_init(void)
 {
-	sysdev_class_register(&bast_pm_sysclass);
-	sysdev_register(&bast_pm_sysdev);
+	register_syscore_ops(&bast_pm_syscore_ops);
 
 	s3c_i2c0_set_platdata(&bast_i2c_info);
 	s3c_nand_set_platdata(&bast_nand_info);
diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c
index 725636f..4728f9a 100644
--- a/arch/arm/mach-s3c2410/pm.c
+++ b/arch/arm/mach-s3c2410/pm.c
@@ -25,6 +25,7 @@
 #include <linux/errno.h>
 #include <linux/time.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/gpio.h>
 #include <linux/io.h>
 
@@ -92,7 +93,7 @@ static void s3c2410_pm_prepare(void)
 	}
 }
 
-static int s3c2410_pm_resume(struct sys_device *dev)
+static void s3c2410_pm_resume(void)
 {
 	unsigned long tmp;
 
@@ -104,10 +105,12 @@ static int s3c2410_pm_resume(struct sys_device *dev)
 
 	if ( machine_is_aml_m5900() )
 		s3c2410_gpio_setpin(S3C2410_GPF(2), 0);
-
-	return 0;
 }
 
+struct syscore_ops s3c2410_pm_syscore_ops = {
+	.resume		= s3c2410_pm_resume,
+};
+
 static int s3c2410_pm_add(struct sys_device *dev)
 {
 	pm_cpu_prep = s3c2410_pm_prepare;
@@ -119,7 +122,6 @@ static int s3c2410_pm_add(struct sys_device *dev)
 #if defined(CONFIG_CPU_S3C2410)
 static struct sysdev_driver s3c2410_pm_driver = {
 	.add		= s3c2410_pm_add,
-	.resume		= s3c2410_pm_resume,
 };
 
 /* register ourselves */
@@ -133,7 +135,6 @@ arch_initcall(s3c2410_pm_drvinit);
 
 static struct sysdev_driver s3c2410a_pm_driver = {
 	.add		= s3c2410_pm_add,
-	.resume		= s3c2410_pm_resume,
 };
 
 static int __init s3c2410a_pm_drvinit(void)
@@ -147,7 +148,6 @@ arch_initcall(s3c2410a_pm_drvinit);
 #if defined(CONFIG_CPU_S3C2440)
 static struct sysdev_driver s3c2440_pm_driver = {
 	.add		= s3c2410_pm_add,
-	.resume		= s3c2410_pm_resume,
 };
 
 static int __init s3c2440_pm_drvinit(void)
@@ -161,7 +161,6 @@ arch_initcall(s3c2440_pm_drvinit);
 #if defined(CONFIG_CPU_S3C2442)
 static struct sysdev_driver s3c2442_pm_driver = {
 	.add		= s3c2410_pm_add,
-	.resume		= s3c2410_pm_resume,
 };
 
 static int __init s3c2442_pm_drvinit(void)
diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c
index adc90a3..f1d3bd8 100644
--- a/arch/arm/mach-s3c2410/s3c2410.c
+++ b/arch/arm/mach-s3c2410/s3c2410.c
@@ -19,6 +19,7 @@
 #include <linux/gpio.h>
 #include <linux/clk.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
@@ -40,6 +41,7 @@
 #include <plat/devs.h>
 #include <plat/clock.h>
 #include <plat/pll.h>
+#include <plat/pm.h>
 
 #include <plat/gpio-core.h>
 #include <plat/gpio-cfg.h>
@@ -168,6 +170,9 @@ int __init s3c2410_init(void)
 {
 	printk("S3C2410: Initialising architecture\n");
 
+	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+
 	return sysdev_register(&s3c2410_sysdev);
 }
 
diff --git a/arch/arm/mach-s3c2412/irq.c b/arch/arm/mach-s3c2412/irq.c
index f3355d2..1a1aa22 100644
--- a/arch/arm/mach-s3c2412/irq.c
+++ b/arch/arm/mach-s3c2412/irq.c
@@ -202,8 +202,6 @@ static int s3c2412_irq_add(struct sys_device *sysdev)
 
 static struct sysdev_driver s3c2412_irq_driver = {
 	.add		= s3c2412_irq_add,
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
 };
 
 static int s3c2412_irq_init(void)
diff --git a/arch/arm/mach-s3c2412/mach-jive.c b/arch/arm/mach-s3c2412/mach-jive.c
index 923e01b..85dcaeb 100644
--- a/arch/arm/mach-s3c2412/mach-jive.c
+++ b/arch/arm/mach-s3c2412/mach-jive.c
@@ -17,7 +17,7 @@
 #include <linux/timer.h>
 #include <linux/init.h>
 #include <linux/gpio.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
@@ -486,7 +486,7 @@ static struct s3c2410_udc_mach_info jive_udc_cfg __initdata = {
 /* Jive power management device */
 
 #ifdef CONFIG_PM
-static int jive_pm_suspend(struct sys_device *sd, pm_message_t state)
+static int jive_pm_suspend(void)
 {
 	/* Write the magic value u-boot uses to check for resume into
 	 * the INFORM0 register, and ensure INFORM1 is set to the
@@ -498,10 +498,9 @@ static int jive_pm_suspend(struct sys_device *sd, pm_message_t state)
 	return 0;
 }
 
-static int jive_pm_resume(struct sys_device *sd)
+static void jive_pm_resume(void)
 {
 	__raw_writel(0x0, S3C2412_INFORM0);
-	return 0;
 }
 
 #else
@@ -509,16 +508,11 @@ static int jive_pm_resume(struct sys_device *sd)
 #define jive_pm_resume NULL
 #endif
 
-static struct sysdev_class jive_pm_sysclass = {
-	.name		= "jive-pm",
+static struct syscore_ops jive_pm_syscore_ops = {
 	.suspend	= jive_pm_suspend,
 	.resume		= jive_pm_resume,
 };
 
-static struct sys_device jive_pm_sysdev = {
-	.cls		= &jive_pm_sysclass,
-};
-
 static void __init jive_map_io(void)
 {
 	s3c24xx_init_io(jive_iodesc, ARRAY_SIZE(jive_iodesc));
@@ -536,10 +530,9 @@ static void jive_power_off(void)
 
 static void __init jive_machine_init(void)
 {
-	/* register system devices for managing low level suspend */
+	/* register system core operations for managing low level suspend */
 
-	sysdev_class_register(&jive_pm_sysclass);
-	sysdev_register(&jive_pm_sysdev);
+	register_syscore_ops(&jive_pm_syscore_ops);
 
 	/* write our sleep configurations for the IO. Pull down all unused
 	 * IO, ensure that we have turned off all peripherals we do not
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c
index a7417c4..752b13a 100644
--- a/arch/arm/mach-s3c2412/pm.c
+++ b/arch/arm/mach-s3c2412/pm.c
@@ -17,6 +17,7 @@
 #include <linux/timer.h>
 #include <linux/init.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 
@@ -86,13 +87,24 @@ static struct sleep_save s3c2412_sleep[] = {
 	SAVE_ITEM(S3C2413_GPJSLPCON),
 };
 
-static int s3c2412_pm_suspend(struct sys_device *dev, pm_message_t state)
+static struct sysdev_driver s3c2412_pm_driver = {
+	.add		= s3c2412_pm_add,
+};
+
+static __init int s3c2412_pm_init(void)
+{
+	return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_pm_driver);
+}
+
+arch_initcall(s3c2412_pm_init);
+
+static int s3c2412_pm_suspend(void)
 {
 	s3c_pm_do_save(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
 	return 0;
 }
 
-static int s3c2412_pm_resume(struct sys_device *dev)
+static void s3c2412_pm_resume(void)
 {
 	unsigned long tmp;
 
@@ -102,18 +114,9 @@ static int s3c2412_pm_resume(struct sys_device *dev)
 	__raw_writel(tmp, S3C2412_PWRCFG);
 
 	s3c_pm_do_restore(s3c2412_sleep, ARRAY_SIZE(s3c2412_sleep));
-	return 0;
 }
 
-static struct sysdev_driver s3c2412_pm_driver = {
-	.add		= s3c2412_pm_add,
+struct syscore_ops s3c2412_pm_syscore_ops = {
 	.suspend	= s3c2412_pm_suspend,
 	.resume		= s3c2412_pm_resume,
 };
-
-static __init int s3c2412_pm_init(void)
-{
-	return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_pm_driver);
-}
-
-arch_initcall(s3c2412_pm_init);
diff --git a/arch/arm/mach-s3c2412/s3c2412.c b/arch/arm/mach-s3c2412/s3c2412.c
index 4c6df51..ef0958d 100644
--- a/arch/arm/mach-s3c2412/s3c2412.c
+++ b/arch/arm/mach-s3c2412/s3c2412.c
@@ -19,6 +19,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
@@ -244,5 +245,8 @@ int __init s3c2412_init(void)
 {
 	printk("S3C2412: Initialising architecture\n");
 
+	register_syscore_ops(&s3c2412_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+
 	return sysdev_register(&s3c2412_sysdev);
 }
diff --git a/arch/arm/mach-s3c2416/irq.c b/arch/arm/mach-s3c2416/irq.c
index 77b38f2..28ad20d 100644
--- a/arch/arm/mach-s3c2416/irq.c
+++ b/arch/arm/mach-s3c2416/irq.c
@@ -236,8 +236,6 @@ static int __init s3c2416_irq_add(struct sys_device *sysdev)
 
 static struct sysdev_driver s3c2416_irq_driver = {
 	.add		= s3c2416_irq_add,
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
 };
 
 static int __init s3c2416_irq_init(void)
diff --git a/arch/arm/mach-s3c2416/pm.c b/arch/arm/mach-s3c2416/pm.c
index 4a04205..41db2b2 100644
--- a/arch/arm/mach-s3c2416/pm.c
+++ b/arch/arm/mach-s3c2416/pm.c
@@ -11,6 +11,7 @@
 */
 
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
@@ -55,30 +56,26 @@ static int s3c2416_pm_add(struct sys_device *sysdev)
 	return 0;
 }
 
-static int s3c2416_pm_suspend(struct sys_device *dev, pm_message_t state)
+static struct sysdev_driver s3c2416_pm_driver = {
+	.add		= s3c2416_pm_add,
+};
+
+static __init int s3c2416_pm_init(void)
 {
-	return 0;
+	return sysdev_driver_register(&s3c2416_sysclass, &s3c2416_pm_driver);
 }
 
-static int s3c2416_pm_resume(struct sys_device *dev)
+arch_initcall(s3c2416_pm_init);
+
+
+static void s3c2416_pm_resume(void)
 {
 	/* unset the return-from-sleep amd inform flags */
 	__raw_writel(0x0, S3C2443_PWRMODE);
 	__raw_writel(0x0, S3C2412_INFORM0);
 	__raw_writel(0x0, S3C2412_INFORM1);
-
-	return 0;
 }
 
-static struct sysdev_driver s3c2416_pm_driver = {
-	.add		= s3c2416_pm_add,
-	.suspend	= s3c2416_pm_suspend,
+struct syscore_ops s3c2416_pm_syscore_ops = {
 	.resume		= s3c2416_pm_resume,
 };
-
-static __init int s3c2416_pm_init(void)
-{
-	return sysdev_driver_register(&s3c2416_sysclass, &s3c2416_pm_driver);
-}
-
-arch_initcall(s3c2416_pm_init);
diff --git a/arch/arm/mach-s3c2416/s3c2416.c b/arch/arm/mach-s3c2416/s3c2416.c
index ba7fd87..494ce91 100644
--- a/arch/arm/mach-s3c2416/s3c2416.c
+++ b/arch/arm/mach-s3c2416/s3c2416.c
@@ -32,6 +32,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial_core.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 
@@ -54,6 +55,7 @@
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/sdhci.h>
+#include <plat/pm.h>
 
 #include <plat/iic-core.h>
 #include <plat/fb-core.h>
@@ -95,6 +97,9 @@ int __init s3c2416_init(void)
 
 	s3c_fb_setname("s3c2443-fb");
 
+	register_syscore_ops(&s3c2416_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+
 	return sysdev_register(&s3c2416_sysdev);
 }
 
diff --git a/arch/arm/mach-s3c2440/mach-osiris.c b/arch/arm/mach-s3c2440/mach-osiris.c
index 14dc678..d885363 100644
--- a/arch/arm/mach-s3c2440/mach-osiris.c
+++ b/arch/arm/mach-s3c2440/mach-osiris.c
@@ -17,7 +17,7 @@
 #include <linux/init.h>
 #include <linux/gpio.h>
 #include <linux/device.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/clk.h>
 #include <linux/i2c.h>
@@ -284,7 +284,7 @@ static struct platform_device osiris_pcmcia = {
 #ifdef CONFIG_PM
 static unsigned char pm_osiris_ctrl0;
 
-static int osiris_pm_suspend(struct sys_device *sd, pm_message_t state)
+static int osiris_pm_suspend(void)
 {
 	unsigned int tmp;
 
@@ -304,7 +304,7 @@ static int osiris_pm_suspend(struct sys_device *sd, pm_message_t state)
 	return 0;
 }
 
-static int osiris_pm_resume(struct sys_device *sd)
+static void osiris_pm_resume(void)
 {
 	if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
 		__raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
@@ -312,8 +312,6 @@ static int osiris_pm_resume(struct sys_device *sd)
 	__raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
 
 	s3c_gpio_cfgpin(S3C2410_GPA(21), S3C2410_GPA21_nRSTOUT);
-
-	return 0;
 }
 
 #else
@@ -321,16 +319,11 @@ static int osiris_pm_resume(struct sys_device *sd)
 #define osiris_pm_resume NULL
 #endif
 
-static struct sysdev_class osiris_pm_sysclass = {
-	.name		= "mach-osiris",
+static struct syscore_ops osiris_pm_syscore_ops = {
 	.suspend	= osiris_pm_suspend,
 	.resume		= osiris_pm_resume,
 };
 
-static struct sys_device osiris_pm_sysdev = {
-	.cls		= &osiris_pm_sysclass,
-};
-
 /* Link for DVS driver to TPS65011 */
 
 static void osiris_tps_release(struct device *dev)
@@ -439,8 +432,7 @@ static void __init osiris_map_io(void)
 
 static void __init osiris_init(void)
 {
-	sysdev_class_register(&osiris_pm_sysclass);
-	sysdev_register(&osiris_pm_sysdev);
+	register_syscore_ops(&osiris_pm_syscore_ops);
 
 	s3c_i2c0_set_platdata(NULL);
 	s3c_nand_set_platdata(&osiris_nand_info);
diff --git a/arch/arm/mach-s3c2440/s3c2440.c b/arch/arm/mach-s3c2440/s3c2440.c
index f7663f7..ce99ff7 100644
--- a/arch/arm/mach-s3c2440/s3c2440.c
+++ b/arch/arm/mach-s3c2440/s3c2440.c
@@ -19,6 +19,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial_core.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/gpio.h>
 #include <linux/clk.h>
 #include <linux/io.h>
@@ -33,6 +34,7 @@
 #include <plat/devs.h>
 #include <plat/cpu.h>
 #include <plat/s3c244x.h>
+#include <plat/pm.h>
 
 #include <plat/gpio-core.h>
 #include <plat/gpio-cfg.h>
@@ -51,6 +53,12 @@ int __init s3c2440_init(void)
 	s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
 	s3c_device_wdt.resource[1].end   = IRQ_S3C2440_WDT;
 
+	/* register suspend/resume handlers */
+
+	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c244x_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+
 	/* register our system device for everything else */
 
 	return sysdev_register(&s3c2440_sysdev);
diff --git a/arch/arm/mach-s3c2440/s3c2442.c b/arch/arm/mach-s3c2440/s3c2442.c
index ecf8135..6224bad 100644
--- a/arch/arm/mach-s3c2440/s3c2442.c
+++ b/arch/arm/mach-s3c2440/s3c2442.c
@@ -29,6 +29,7 @@
 #include <linux/err.h>
 #include <linux/device.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/mutex.h>
@@ -45,6 +46,7 @@
 #include <plat/clock.h>
 #include <plat/cpu.h>
 #include <plat/s3c244x.h>
+#include <plat/pm.h>
 
 #include <plat/gpio-core.h>
 #include <plat/gpio-cfg.h>
@@ -167,6 +169,10 @@ int __init s3c2442_init(void)
 {
 	printk("S3C2442: Initialising architecture\n");
 
+	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c244x_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+
 	return sysdev_register(&s3c2442_sysdev);
 }
 
diff --git a/arch/arm/mach-s3c2440/s3c244x-irq.c b/arch/arm/mach-s3c2440/s3c244x-irq.c
index de07c2f..c63e8f2 100644
--- a/arch/arm/mach-s3c2440/s3c244x-irq.c
+++ b/arch/arm/mach-s3c2440/s3c244x-irq.c
@@ -116,8 +116,6 @@ static int s3c244x_irq_add(struct sys_device *sysdev)
 
 static struct sysdev_driver s3c2440_irq_driver = {
 	.add		= s3c244x_irq_add,
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
 };
 
 static int s3c2440_irq_init(void)
@@ -129,8 +127,6 @@ arch_initcall(s3c2440_irq_init);
 
 static struct sysdev_driver s3c2442_irq_driver = {
 	.add		= s3c244x_irq_add,
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
 };
 
 
diff --git a/arch/arm/mach-s3c2440/s3c244x.c b/arch/arm/mach-s3c2440/s3c244x.c
index 90c1707..7e8a23d 100644
--- a/arch/arm/mach-s3c2440/s3c244x.c
+++ b/arch/arm/mach-s3c2440/s3c244x.c
@@ -19,6 +19,7 @@
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 
@@ -134,45 +135,14 @@ void __init s3c244x_init_clocks(int xtal)
 	s3c2410_baseclk_add();
 }
 
-#ifdef CONFIG_PM
-
-static struct sleep_save s3c244x_sleep[] = {
-	SAVE_ITEM(S3C2440_DSC0),
-	SAVE_ITEM(S3C2440_DSC1),
-	SAVE_ITEM(S3C2440_GPJDAT),
-	SAVE_ITEM(S3C2440_GPJCON),
-	SAVE_ITEM(S3C2440_GPJUP)
-};
-
-static int s3c244x_suspend(struct sys_device *dev, pm_message_t state)
-{
-	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
-	return 0;
-}
-
-static int s3c244x_resume(struct sys_device *dev)
-{
-	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
-	return 0;
-}
-
-#else
-#define s3c244x_suspend NULL
-#define s3c244x_resume  NULL
-#endif
-
 /* Since the S3C2442 and S3C2440 share  items, put both sysclasses here */
 
 struct sysdev_class s3c2440_sysclass = {
 	.name		= "s3c2440-core",
-	.suspend	= s3c244x_suspend,
-	.resume		= s3c244x_resume
 };
 
 struct sysdev_class s3c2442_sysclass = {
 	.name		= "s3c2442-core",
-	.suspend	= s3c244x_suspend,
-	.resume		= s3c244x_resume
 };
 
 /* need to register class before we actually register the device, and
@@ -194,3 +164,33 @@ static int __init s3c2442_core_init(void)
 }
 
 core_initcall(s3c2442_core_init);
+
+
+#ifdef CONFIG_PM
+static struct sleep_save s3c244x_sleep[] = {
+	SAVE_ITEM(S3C2440_DSC0),
+	SAVE_ITEM(S3C2440_DSC1),
+	SAVE_ITEM(S3C2440_GPJDAT),
+	SAVE_ITEM(S3C2440_GPJCON),
+	SAVE_ITEM(S3C2440_GPJUP)
+};
+
+static int s3c244x_suspend(void)
+{
+	s3c_pm_do_save(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
+	return 0;
+}
+
+static void s3c244x_resume(void)
+{
+	s3c_pm_do_restore(s3c244x_sleep, ARRAY_SIZE(s3c244x_sleep));
+}
+#else
+#define s3c244x_suspend NULL
+#define s3c244x_resume  NULL
+#endif
+
+struct syscore_ops s3c244x_pm_syscore_ops = {
+	.suspend	= s3c244x_suspend,
+	.resume		= s3c244x_resume,
+};
diff --git a/arch/arm/mach-s3c64xx/irq-pm.c b/arch/arm/mach-s3c64xx/irq-pm.c
index da1bec6..8bec61e 100644
--- a/arch/arm/mach-s3c64xx/irq-pm.c
+++ b/arch/arm/mach-s3c64xx/irq-pm.c
@@ -13,7 +13,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/interrupt.h>
 #include <linux/serial_core.h>
 #include <linux/irq.h>
@@ -54,7 +54,7 @@ static struct irq_grp_save {
 
 static u32 irq_uart_mask[CONFIG_SERIAL_SAMSUNG_UARTS];
 
-static int s3c64xx_irq_pm_suspend(struct sys_device *dev, pm_message_t state)
+static int s3c64xx_irq_pm_suspend(void)
 {
 	struct irq_grp_save *grp = eint_grp_save;
 	int i;
@@ -75,7 +75,7 @@ static int s3c64xx_irq_pm_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int s3c64xx_irq_pm_resume(struct sys_device *dev)
+static void s3c64xx_irq_pm_resume(void)
 {
 	struct irq_grp_save *grp = eint_grp_save;
 	int i;
@@ -94,18 +94,18 @@ static int s3c64xx_irq_pm_resume(struct sys_device *dev)
 	}
 
 	S3C_PMDBG("%s: IRQ configuration restored\n", __func__);
-	return 0;
 }
 
-static struct sysdev_driver s3c64xx_irq_driver = {
+struct syscore_ops s3c64xx_irq_syscore_ops = {
 	.suspend = s3c64xx_irq_pm_suspend,
 	.resume	 = s3c64xx_irq_pm_resume,
 };
 
-static int __init s3c64xx_irq_pm_init(void)
+static __init int s3c64xx_syscore_init(void)
 {
-	return sysdev_driver_register(&s3c64xx_sysclass, &s3c64xx_irq_driver);
-}
+	register_syscore_ops(&s3c64xx_irq_syscore_ops);
 
-arch_initcall(s3c64xx_irq_pm_init);
+	return 0;
+}
 
+core_initcall(s3c64xx_syscore_init);
diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c
index 549d792..24febae 100644
--- a/arch/arm/mach-s5pv210/pm.c
+++ b/arch/arm/mach-s5pv210/pm.c
@@ -16,6 +16,7 @@
 
 #include <linux/init.h>
 #include <linux/suspend.h>
+#include <linux/syscore_ops.h>
 #include <linux/io.h>
 
 #include <plat/cpu.h>
@@ -140,7 +141,17 @@ static int s5pv210_pm_add(struct sys_device *sysdev)
 	return 0;
 }
 
-static int s5pv210_pm_resume(struct sys_device *dev)
+static struct sysdev_driver s5pv210_pm_driver = {
+	.add		= s5pv210_pm_add,
+};
+
+static __init int s5pv210_pm_drvinit(void)
+{
+	return sysdev_driver_register(&s5pv210_sysclass, &s5pv210_pm_driver);
+}
+arch_initcall(s5pv210_pm_drvinit);
+
+static void s5pv210_pm_resume(void)
 {
 	u32 tmp;
 
@@ -150,17 +161,15 @@ static int s5pv210_pm_resume(struct sys_device *dev)
 	__raw_writel(tmp , S5P_OTHERS);
 
 	s3c_pm_do_restore_core(s5pv210_core_save, ARRAY_SIZE(s5pv210_core_save));
-
-	return 0;
 }
 
-static struct sysdev_driver s5pv210_pm_driver = {
-	.add		= s5pv210_pm_add,
+static struct syscore_ops s5pv210_pm_syscore_ops = {
 	.resume		= s5pv210_pm_resume,
 };
 
-static __init int s5pv210_pm_drvinit(void)
+static __init int s5pv210_pm_syscore_init(void)
 {
-	return sysdev_driver_register(&s5pv210_sysclass, &s5pv210_pm_driver);
+	register_syscore_ops(&s5pv210_pm_syscore_ops);
+	return 0;
 }
-arch_initcall(s5pv210_pm_drvinit);
+arch_initcall(s5pv210_pm_syscore_init);
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index 423ddb3..dfbf824 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -14,7 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/ioport.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/hardware.h>
 #include <asm/mach/irq.h>
@@ -234,7 +234,7 @@ static struct sa1100irq_state {
 	unsigned int	iccr;
 } sa1100irq_state;
 
-static int sa1100irq_suspend(struct sys_device *dev, pm_message_t state)
+static int sa1100irq_suspend(void)
 {
 	struct sa1100irq_state *st = &sa1100irq_state;
 
@@ -264,7 +264,7 @@ static int sa1100irq_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int sa1100irq_resume(struct sys_device *dev)
+static void sa1100irq_resume(void)
 {
 	struct sa1100irq_state *st = &sa1100irq_state;
 
@@ -277,24 +277,17 @@ static int sa1100irq_resume(struct sys_device *dev)
 
 		ICMR = st->icmr;
 	}
-	return 0;
 }
 
-static struct sysdev_class sa1100irq_sysclass = {
-	.name		= "sa11x0-irq",
+static struct syscore_ops sa1100irq_syscore_ops = {
 	.suspend	= sa1100irq_suspend,
 	.resume		= sa1100irq_resume,
 };
 
-static struct sys_device sa1100irq_device = {
-	.id		= 0,
-	.cls		= &sa1100irq_sysclass,
-};
-
 static int __init sa1100irq_init_devicefs(void)
 {
-	sysdev_class_register(&sa1100irq_sysclass);
-	return sysdev_register(&sa1100irq_device);
+	register_syscore_ops(&sa1100irq_syscore_ops);
+	return 0;
 }
 
 device_initcall(sa1100irq_init_devicefs);
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index d2adcdd..bd9e321 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -17,7 +17,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
@@ -1372,9 +1372,7 @@ static const struct dev_pm_ops omap_mpuio_dev_pm_ops = {
 	.resume_noirq = omap_mpuio_resume_noirq,
 };
 
-/* use platform_driver for this, now that there's no longer any
- * point to sys_device (other than not disturbing old code).
- */
+/* use platform_driver for this. */
 static struct platform_driver omap_mpuio_driver = {
 	.driver		= {
 		.name	= "mpuio",
@@ -1745,7 +1743,7 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
 }
 
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
-static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
+static int omap_gpio_suspend(void)
 {
 	int i;
 
@@ -1795,12 +1793,12 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
 	return 0;
 }
 
-static int omap_gpio_resume(struct sys_device *dev)
+static void omap_gpio_resume(void)
 {
 	int i;
 
 	if (!cpu_class_is_omap2() && !cpu_is_omap16xx())
-		return 0;
+		return;
 
 	for (i = 0; i < gpio_bank_count; i++) {
 		struct gpio_bank *bank = &gpio_bank[i];
@@ -1836,21 +1834,13 @@ static int omap_gpio_resume(struct sys_device *dev)
 		__raw_writel(bank->saved_wakeup, wake_set);
 		spin_unlock_irqrestore(&bank->lock, flags);
 	}
-
-	return 0;
 }
 
-static struct sysdev_class omap_gpio_sysclass = {
-	.name		= "gpio",
+static struct syscore_ops omap_gpio_syscore_ops = {
 	.suspend	= omap_gpio_suspend,
 	.resume		= omap_gpio_resume,
 };
 
-static struct sys_device omap_gpio_device = {
-	.id		= 0,
-	.cls		= &omap_gpio_sysclass,
-};
-
 #endif
 
 #ifdef CONFIG_ARCH_OMAP2PLUS
@@ -2108,21 +2098,14 @@ postcore_initcall(omap_gpio_drv_reg);
 
 static int __init omap_gpio_sysinit(void)
 {
-	int ret = 0;
-
 	mpuio_init();
 
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
-	if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
-		if (ret == 0) {
-			ret = sysdev_class_register(&omap_gpio_sysclass);
-			if (ret == 0)
-				ret = sysdev_register(&omap_gpio_device);
-		}
-	}
+	if (cpu_is_omap16xx() || cpu_class_is_omap2())
+		register_syscore_ops(&omap_gpio_syscore_ops);
 #endif
 
-	return ret;
+	return 0;
 }
 
 arch_initcall(omap_gpio_sysinit);
diff --git a/arch/arm/plat-pxa/gpio.c b/arch/arm/plat-pxa/gpio.c
index dce088f..48ebb94 100644
--- a/arch/arm/plat-pxa/gpio.c
+++ b/arch/arm/plat-pxa/gpio.c
@@ -15,7 +15,7 @@
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/slab.h>
 
 #include <mach/gpio.h>
@@ -295,7 +295,7 @@ void __init pxa_init_gpio(int mux_irq, int start, int end, set_wake_t fn)
 }
 
 #ifdef CONFIG_PM
-static int pxa_gpio_suspend(struct sys_device *dev, pm_message_t state)
+static int pxa_gpio_suspend(void)
 {
 	struct pxa_gpio_chip *c;
 	int gpio;
@@ -312,7 +312,7 @@ static int pxa_gpio_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int pxa_gpio_resume(struct sys_device *dev)
+static void pxa_gpio_resume(void)
 {
 	struct pxa_gpio_chip *c;
 	int gpio;
@@ -326,22 +326,13 @@ static int pxa_gpio_resume(struct sys_device *dev)
 		__raw_writel(c->saved_gfer, c->regbase + GFER_OFFSET);
 		__raw_writel(c->saved_gpdr, c->regbase + GPDR_OFFSET);
 	}
-	return 0;
 }
 #else
 #define pxa_gpio_suspend	NULL
 #define pxa_gpio_resume		NULL
 #endif
 
-struct sysdev_class pxa_gpio_sysclass = {
-	.name		= "gpio",
+struct syscore_ops pxa_gpio_syscore_ops = {
 	.suspend	= pxa_gpio_suspend,
 	.resume		= pxa_gpio_resume,
 };
-
-static int __init pxa_gpio_init(void)
-{
-	return sysdev_class_register(&pxa_gpio_sysclass);
-}
-
-core_initcall(pxa_gpio_init);
diff --git a/arch/arm/plat-pxa/mfp.c b/arch/arm/plat-pxa/mfp.c
index a9aa5ad..be12ead 100644
--- a/arch/arm/plat-pxa/mfp.c
+++ b/arch/arm/plat-pxa/mfp.c
@@ -17,7 +17,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
-#include <linux/sysdev.h>
 
 #include <plat/mfp.h>
 
diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c
index 27ea852..c10d10c 100644
--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -22,7 +22,7 @@
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/io.h>
@@ -1195,19 +1195,12 @@ int s3c2410_dma_getposition(unsigned int channel, dma_addr_t *src, dma_addr_t *d
 
 EXPORT_SYMBOL(s3c2410_dma_getposition);
 
-static inline struct s3c2410_dma_chan *to_dma_chan(struct sys_device *dev)
-{
-	return container_of(dev, struct s3c2410_dma_chan, dev);
-}
-
-/* system device class */
+/* system core operations */
 
 #ifdef CONFIG_PM
 
-static int s3c2410_dma_suspend(struct sys_device *dev, pm_message_t state)
+static void s3c2410_dma_suspend_chan(s3c2410_dma_chan *cp)
 {
-	struct s3c2410_dma_chan *cp = to_dma_chan(dev);
-
 	printk(KERN_DEBUG "suspending dma channel %d\n", cp->number);
 
 	if (dma_rdreg(cp, S3C2410_DMA_DMASKTRIG) & S3C2410_DMASKTRIG_ON) {
@@ -1222,13 +1215,21 @@ static int s3c2410_dma_suspend(struct sys_device *dev, pm_message_t state)
 
 		s3c2410_dma_dostop(cp);
 	}
+}
+
+static int s3c2410_dma_suspend(void)
+{
+	struct s3c2410_dma_chan *cp = s3c2410_chans;
+	int channel;
+
+	for (channel = 0; channel < dma_channels; cp++, channel++)
+		s3c2410_dma_suspend_chan(cp);
 
 	return 0;
 }
 
-static int s3c2410_dma_resume(struct sys_device *dev)
+static void s3c2410_dma_resume_chan(struct s3c2410_dma_chan *cp)
 {
-	struct s3c2410_dma_chan *cp = to_dma_chan(dev);
 	unsigned int no = cp->number | DMACH_LOW_LEVEL;
 
 	/* restore channel's hardware configuration */
@@ -1249,13 +1250,21 @@ static int s3c2410_dma_resume(struct sys_device *dev)
 	return 0;
 }
 
+static void s3c2410_dma_resume(void)
+{
+	struct s3c2410_dma_chan *cp = s3c2410_chans + dma_channels - 1;
+	int channel;
+
+	for (channel = dma_channels - 1; channel >= 0; cp++, channel--)
+		s3c2410_dma_resume_chan(cp);
+}
+
 #else
 #define s3c2410_dma_suspend NULL
 #define s3c2410_dma_resume  NULL
 #endif /* CONFIG_PM */
 
-struct sysdev_class dma_sysclass = {
-	.name		= "s3c24xx-dma",
+struct syscore_ops dma_syscore_ops = {
 	.suspend	= s3c2410_dma_suspend,
 	.resume		= s3c2410_dma_resume,
 };
@@ -1269,39 +1278,14 @@ static void s3c2410_dma_cache_ctor(void *p)
 
 /* initialisation code */
 
-static int __init s3c24xx_dma_sysclass_init(void)
+static int __init s3c24xx_dma_syscore_init(void)
 {
-	int ret = sysdev_class_register(&dma_sysclass);
-
-	if (ret != 0)
-		printk(KERN_ERR "dma sysclass registration failed\n");
-
-	return ret;
-}
-
-core_initcall(s3c24xx_dma_sysclass_init);
-
-static int __init s3c24xx_dma_sysdev_register(void)
-{
-	struct s3c2410_dma_chan *cp = s3c2410_chans;
-	int channel, ret;
-
-	for (channel = 0; channel < dma_channels; cp++, channel++) {
-		cp->dev.cls = &dma_sysclass;
-		cp->dev.id  = channel;
-		ret = sysdev_register(&cp->dev);
-
-		if (ret) {
-			printk(KERN_ERR "error registering dev for dma %d\n",
-			       channel);
- 			return ret;
-		}
-	}
+	register_syscore_ops(&dma_syscore_ops);
 
 	return 0;
 }
 
-late_initcall(s3c24xx_dma_sysdev_register);
+late_initcall(s3c24xx_dma_syscore_init);
 
 int __init s3c24xx_dma_init(unsigned int channels, unsigned int irq,
 			    unsigned int stride)
diff --git a/arch/arm/plat-s3c24xx/irq-pm.c b/arch/arm/plat-s3c24xx/irq-pm.c
index c3624d8..0efb2e2 100644
--- a/arch/arm/plat-s3c24xx/irq-pm.c
+++ b/arch/arm/plat-s3c24xx/irq-pm.c
@@ -14,7 +14,6 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
 #include <linux/irq.h>
 
 #include <plat/cpu.h>
@@ -65,7 +64,7 @@ static unsigned long save_extint[3];
 static unsigned long save_eintflt[4];
 static unsigned long save_eintmask;
 
-int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
+int s3c24xx_irq_suspend(void)
 {
 	unsigned int i;
 
@@ -81,7 +80,7 @@ int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-int s3c24xx_irq_resume(struct sys_device *dev)
+void s3c24xx_irq_resume(void)
 {
 	unsigned int i;
 
@@ -93,6 +92,4 @@ int s3c24xx_irq_resume(struct sys_device *dev)
 
 	s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
 	__raw_writel(save_eintmask, S3C24XX_EINTMASK);
-
-	return 0;
 }
diff --git a/arch/arm/plat-s5p/irq-pm.c b/arch/arm/plat-s5p/irq-pm.c
index 5259ad4..327acb3 100644
--- a/arch/arm/plat-s5p/irq-pm.c
+++ b/arch/arm/plat-s5p/irq-pm.c
@@ -16,7 +16,6 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
-#include <linux/sysdev.h>
 
 #include <plat/cpu.h>
 #include <plat/irqs.h>
@@ -77,17 +76,15 @@ static struct sleep_save eint_save[] = {
 	SAVE_ITEM(S5P_EINT_MASK(3)),
 };
 
-int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
+int s3c24xx_irq_suspend(void)
 {
 	s3c_pm_do_save(eint_save, ARRAY_SIZE(eint_save));
 
 	return 0;
 }
 
-int s3c24xx_irq_resume(struct sys_device *dev)
+void s3c24xx_irq_resume(void)
 {
 	s3c_pm_do_restore(eint_save, ARRAY_SIZE(eint_save));
-
-	return 0;
 }
 
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index cedfff5..3aedac0 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -68,6 +68,12 @@ extern void s3c24xx_init_uartdevs(char *name,
 struct sys_timer;
 extern struct sys_timer s3c24xx_timer;
 
+extern struct syscore_ops s3c2410_pm_syscore_ops;
+extern struct syscore_ops s3c2412_pm_syscore_ops;
+extern struct syscore_ops s3c2416_pm_syscore_ops;
+extern struct syscore_ops s3c244x_pm_syscore_ops;
+extern struct syscore_ops s3c64xx_irq_syscore_ops;
+
 /* system device classes */
 
 extern struct sysdev_class s3c2410_sysclass;
diff --git a/arch/arm/plat-samsung/include/plat/pm.h b/arch/arm/plat-samsung/include/plat/pm.h
index 937cc2a..7fb6f6b 100644
--- a/arch/arm/plat-samsung/include/plat/pm.h
+++ b/arch/arm/plat-samsung/include/plat/pm.h
@@ -103,14 +103,16 @@ extern void s3c_pm_do_restore_core(struct sleep_save *ptr, int count);
 
 #ifdef CONFIG_PM
 extern int s3c_irqext_wake(struct irq_data *data, unsigned int state);
-extern int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state);
-extern int s3c24xx_irq_resume(struct sys_device *dev);
+extern int s3c24xx_irq_suspend(void);
+extern void s3c24xx_irq_resume(void);
 #else
 #define s3c_irqext_wake NULL
 #define s3c24xx_irq_suspend NULL
 #define s3c24xx_irq_resume  NULL
 #endif
 
+extern struct syscore_ops s3c24xx_irq_syscore_ops;
+
 /* PM debug functions */
 
 #ifdef CONFIG_SAMSUNG_PM_DEBUG
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index f746950..f25e7ec 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -398,9 +398,9 @@ static void vfp_enable(void *unused)
 }
 
 #ifdef CONFIG_PM
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
-static int vfp_pm_suspend(struct sys_device *dev, pm_message_t state)
+static int vfp_pm_suspend(void)
 {
 	struct thread_info *ti = current_thread_info();
 	u32 fpexc = fmrx(FPEXC);
@@ -420,34 +420,25 @@ static int vfp_pm_suspend(struct sys_device *dev, pm_message_t state)
 	return 0;
 }
 
-static int vfp_pm_resume(struct sys_device *dev)
+static void vfp_pm_resume(void)
 {
 	/* ensure we have access to the vfp */
 	vfp_enable(NULL);
 
 	/* and disable it to ensure the next usage restores the state */
 	fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
-
-	return 0;
 }
 
-static struct sysdev_class vfp_pm_sysclass = {
-	.name		= "vfp",
+static struct syscore_ops vfp_pm_syscore_ops = {
 	.suspend	= vfp_pm_suspend,
 	.resume		= vfp_pm_resume,
 };
 
-static struct sys_device vfp_pm_sysdev = {
-	.cls	= &vfp_pm_sysclass,
-};
-
 static void vfp_pm_init(void)
 {
-	sysdev_class_register(&vfp_pm_sysclass);
-	sysdev_register(&vfp_pm_sysdev);
+	register_syscore_ops(&vfp_pm_syscore_ops);
 }
 
-
 #else
 static inline void vfp_pm_init(void) { }
 #endif /* CONFIG_PM */