arm: Remove unused cpu_idle_wait()
cpuidle uses a generic function now. Remove the unused code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King <linux@arm.linux.org.uk>
Link: http://lkml.kernel.org/r/20120507175652.260797846@linutronix.de
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cb253ce..a3ad496 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -160,9 +160,6 @@
and that the relevant menu configurations are displayed for
it.
-config ARCH_HAS_CPU_IDLE_WAIT
- def_bool y
-
config GENERIC_HWEIGHT
bool
default y
diff --git a/arch/arm/include/asm/processor.h b/arch/arm/include/asm/processor.h
index 5ac8d3d..d7038fa 100644
--- a/arch/arm/include/asm/processor.h
+++ b/arch/arm/include/asm/processor.h
@@ -88,8 +88,6 @@
#define cpu_relax() barrier()
#endif
-void cpu_idle_wait(void);
-
/*
* Create a new kernel thread
*/
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 2b7b017..19c95ea 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -157,26 +157,6 @@
void (*arm_pm_restart)(char str, const char *cmd) = null_restart;
EXPORT_SYMBOL_GPL(arm_pm_restart);
-static void do_nothing(void *unused)
-{
-}
-
-/*
- * cpu_idle_wait - Used to ensure that all the CPUs discard old value of
- * pm_idle and update to new pm_idle value. Required while changing pm_idle
- * handler on SMP systems.
- *
- * Caller must have changed pm_idle to the new value before the call. Old
- * pm_idle value will not be used by any CPU after the return of this function.
- */
-void cpu_idle_wait(void)
-{
- smp_mb();
- /* kick all the CPUs so that they exit out of pm_idle */
- smp_call_function(do_nothing, NULL, 1);
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
/*
* This is our default idle handler.
*/
