ARM / Samsung: Use struct syscore_ops for "core" power management

Replace sysdev classes and struct sys_device objects used for "core"
power management by Samsung platforms with struct syscore_ops objects
that are simpler.

This generally reduces the code size and the kernel memory footprint.
It also is necessary for removing sysdevs entirely from the kernel in
the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 2 insertions, 28 deletions

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);