diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index d306225..e3abfd4 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -91,13 +91,11 @@
 
 int __init sh_mobile_setup_cpuidle(void)
 {
-	int ret;
-
 	if (sh_mobile_sleep_supported & SUSP_SH_SF)
 		cpuidle_driver.states[1].disabled = false;
 
 	if (sh_mobile_sleep_supported & SUSP_SH_STANDBY)
 		cpuidle_driver.states[2].disabled = false;
 
-	return cpuidle_register(&cpuidle_driver);
+	return cpuidle_register(&cpuidle_driver, NULL);
 }
diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index 0e6e408..3460584 100644
--- a/drivers/cpuidle/cpuidle-calxeda.c
+++ b/drivers/cpuidle/cpuidle-calxeda.c
@@ -35,7 +35,7 @@
 #include <asm/cp15.h>
 
 extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
-extern void *scu_base_addr;
+extern void __iomem *scu_base_addr;
 
 static noinline void calxeda_idle_restore(void)
 {
diff --git a/drivers/cpuidle/cpuidle-kirkwood.c b/drivers/cpuidle/cpuidle-kirkwood.c
index 521b0a7..3ca3a2e 100644
--- a/drivers/cpuidle/cpuidle-kirkwood.c
+++ b/drivers/cpuidle/cpuidle-kirkwood.c
@@ -70,7 +70,7 @@
 	return cpuidle_register(&kirkwood_idle_driver, NULL);
 }
 
-int kirkwood_cpuidle_remove(struct platform_device *pdev)
+static int kirkwood_cpuidle_remove(struct platform_device *pdev)
 {
 	cpuidle_unregister(&kirkwood_idle_driver);
 	return 0;