1 files changed, 17 insertions, 0 deletions

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index f2360a74e5d5..1941a07b5811 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -46,6 +46,23 @@
 void (*pm_power_off)(void) = machine_power_off;
 EXPORT_SYMBOL(pm_power_off);
 
+#ifdef CONFIG_ALPHA_WTINT
+/*
+ * Sleep the CPU.
+ * EV6, LCA45 and QEMU know how to power down, skipping N timer interrupts.
+ */
+void arch_cpu_idle(void)
+{
+        wtint(0);
+        local_irq_enable();
+}
+
+void arch_cpu_idle_dead(void)
+{
+        wtint(INT_MAX);
+}
+#endif /* ALPHA_WTINT */
+
 struct halt_info {
         int mode;
         char *restart_cmd;