x86: Fix idle consolidation fallout

The core code expects the arch idle code to return with interrupts
enabled. The conversion missed two x86 cases which fail to do that.

Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1305021557030.3972@ionos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 607af0d4d5ef..4e7a37ff03ab 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -312,6 +312,8 @@ void arch_cpu_idle(void)
 {
         if (cpuidle_idle_call())
                 x86_idle();
+        else
+                local_irq_enable();
 }
 
 /*
@@ -368,9 +370,6 @@ void amd_e400_remove_cpu(int cpu)
  */
 static void amd_e400_idle(void)
 {
-        if (need_resched())
-                return;
-
         if (!amd_e400_c1e_detected) {
                 u32 lo, hi;