This was broken when the mwait stuff went in since it executes after the
initial idle_setup() has already selected an idle routine and overrides it
with default_idle.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

--- linux-2.6.8-rc2//arch/i386/kernel/process.c.org	2004-08-10 19:10:30.000000000 -0700
+++ linux-2.6.8-rc2//arch/i386/kernel/process.c	2004-08-11 16:10:12.000000000 -0700
@@ -218,18 +218,13 @@ void __init select_idle_routine(const st
 		printk("monitor/mwait feature present.\n");
 		/*
 		 * Skip, if setup has overridden idle.
-		 * Also, take care of system with asymmetric CPUs.
-		 * Use, mwait_idle only if all cpus support it.
-		 * If not, we fallback to default_idle()
+		 * One CPU supports mwait => All CPUs supports mwait
 		 */
 		if (!pm_idle) {
 			printk("using mwait in idle threads.\n");
 			pm_idle = mwait_idle;
 		}
-		return;
 	}
-	pm_idle = default_idle;
-	return;
 }
 
 static int __init idle_setup (char *str)
--- linux-2.6.8-rc2//arch/x86_64/kernel/process.c.org	2004-08-10 19:18:48.000000000 -0700
+++ linux-2.6.8-rc2//arch/x86_64/kernel/process.c	2004-08-11 16:10:16.000000000 -0700
@@ -169,9 +169,7 @@ void __init select_idle_routine(const st
 	if (cpu_has(c, X86_FEATURE_MWAIT)) {
 		/*
 		 * Skip, if setup has overridden idle.
-		 * Also, take care of system with asymmetric CPUs.
-		 * Use, mwait_idle only if all cpus support it.
-		 * If not, we fallback to default_idle()
+		 * One CPU supports mwait => All CPUs supports mwait
 		 */
 		if (!pm_idle) {
 			if (!printed) {
@@ -180,10 +178,7 @@ void __init select_idle_routine(const st
 			}
 			pm_idle = mwait_idle;
 		}
-		return;
 	}
-	pm_idle = default_idle;
-	return;
 }
 
 static int __init idle_setup (char *str)