[patch V3 40/60] x86/apic/64: Uncopypaste probing

[Thomas Gleixner]

No need for the same thing twice. Also prepares for simplifying the APIC ID
validation checks.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 arch/x86/kernel/apic/probe_64.c |   21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -13,6 +13,15 @@
 
 #include "local.h"
 
+static __init void apic_install_driver(struct apic *driver)
+{
+	if (apic == driver)
+		return;
+
+	apic = driver;
+	pr_info("Switched APIC routing to %s:\n", apic->name);
+}
+
 /* Select the appropriate APIC driver */
 void __init x86_64_probe_apic(void)
 {
@@ -22,11 +31,7 @@ void __init x86_64_probe_apic(void)
 
 	for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
 		if ((*drv)->probe && (*drv)->probe()) {
-			if (apic != *drv) {
-				apic = *drv;
-				pr_info("Switched APIC routing to %s.\n",
-					apic->name);
-			}
+			apic_install_driver(*drv);
 			break;
 		}
 	}
@@ -38,11 +43,7 @@ int __init default_acpi_madt_oem_check(c
 
 	for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
 		if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
-			if (apic != *drv) {
-				apic = *drv;
-				pr_info("Setting APIC routing to %s.\n",
-					apic->name);
-			}
+			apic_install_driver(*drv);
 			return 1;
 		}
 	}