diff --git a/arch/arm/mach-exynos4/pm.c b/arch/arm/mach-exynos4/pm.c
index 10d917d9e3ad..8755ca8dd48d 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-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c
index 5e2f35332056..2854129f8cc7 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 2970ea9f7c2b..1e2d536adda9 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 725636fc4dc3..4728f9aa7df1 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 adc90a3c5890..f1d3bd8f6f17 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 f3355d2ec634..1a1aa220972b 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 923e01bdf017..85dcaeb9e62f 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 a7417c479ffe..752b13a7b3db 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 4c6df51ddf33..ef0958d3e5c6 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 77b38f2381c1..28ad20d42445 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 4a04205b04d5..41db2b21e213 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>
@@ -55,25 +56,8 @@ static int s3c2416_pm_add(struct sys_device *sysdev)
 	return 0;
 }
 
-static int s3c2416_pm_suspend(struct sys_device *dev, pm_message_t state)
-{
-	return 0;
-}
-
-static int s3c2416_pm_resume(struct sys_device *dev)
-{
-	/* 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,
-	.resume		= s3c2416_pm_resume,
 };
 
 static __init int s3c2416_pm_init(void)
@@ -82,3 +66,16 @@ static __init int s3c2416_pm_init(void)
 }
 
 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);
+}
+
+struct syscore_ops s3c2416_pm_syscore_ops = {
+	.resume		= s3c2416_pm_resume,
+};
diff --git a/arch/arm/mach-s3c2416/s3c2416.c b/arch/arm/mach-s3c2416/s3c2416.c
index ba7fd8737434..494ce913dc95 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 14dc67897757..d88536393310 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 f7663f731ea0..ce99ff72838d 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 ecf813546554..6224bad4d604 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 de07c2feaa32..c63e8f26d901 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 90c1707b9c95..7e8a23d2098a 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 da1bec64b9da..8bec61e242c7 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);
+
+	return 0;
 }
 
-arch_initcall(s3c64xx_irq_pm_init);
-
+core_initcall(s3c64xx_syscore_init);
diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c
index 549d7924fd4c..24febae3d4c0 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/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c
index 27ea852e3370..c10d10c56e2e 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 c3624d898630..0efb2e2848c8 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 5259ad458bc8..327acb3a4464 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 cedfff51c82b..3aedac0034ba 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 937cc2ace517..7fb6f6be8c81 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