cpuidle: build fix for non-x86

Convert cpu_idle_wait() to cpuidle_kick_cpus() macro which is
SMP-only, and gives error on non supported CPU.

Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

3 files changed, 17 insertions, 1 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 368864dfe6eb..37d1297e6787 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -105,6 +105,9 @@ config ARCH_HAS_ILOG2_U32
 config ARCH_HAS_ILOG2_U64
         def_bool n
 
+config ARCH_HAS_CPU_IDLE_WAIT
+        def_bool y
+
 config GENERIC_CALIBRATE_DELAY
         def_bool y
 
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index d2fabe7863a9..794962d9f48b 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -82,7 +82,7 @@ void cpuidle_uninstall_idle_handler(void)
 {
         if (enabled_devices && (pm_idle != pm_idle_old)) {
                 pm_idle = pm_idle_old;
-                cpu_idle_wait();
+                cpuidle_kick_cpus();
         }
 }
 
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 16a51546db44..cb95f5a9075a 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -72,6 +72,19 @@ cpuidle_set_statedata(struct cpuidle_state *state, void *data)
         state->driver_data = data;
 }
 
+#ifdef CONFIG_SMP
+#ifdef CONFIG_ARCH_HAS_CPU_IDLE_WAIT
+static inline void cpuidle_kick_cpus(void)
+{
+        cpu_idle_wait();
+}
+#else /* !CONFIG_ARCH_HAS_CPU_IDLE_WAIT */
+#error "Arch needs cpu_idle_wait() equivalent here"
+#endif /* !CONFIG_ARCH_HAS_CPU_IDLE_WAIT */
+#else /* !CONFIG_SMP */
+static inline void cpuidle_kick_cpus(void) {}
+#endif /* !CONFIG_SMP */
+
 struct cpuidle_state_kobj {
         struct cpuidle_state *state;
         struct completion kobj_unregister;