x86, smp: refactor ->wait_for_init_deassert()

- spread out the namespace on a per APIC driver basis

 - handle a NULL ->wait_for_init_deassert() as a 'dont wait' default method

 - remove NUMAQ and Summit handlers

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ab83be2f8e0f..558af378a61d 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -196,7 +196,8 @@ static void __cpuinit smp_callin(void)
          * our local APIC.  We have to wait for the IPI or we'll
          * lock up on an APIC access.
          */
-        wait_for_init_deassert(&init_deasserted);
+        if (apic->wait_for_init_deassert)
+                apic->wait_for_init_deassert(&init_deasserted);
 
         /*
          * (This works even if the APIC is not enabled.)