x86: apic - unify disableapic and nolapic setup handlers

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/apic_32.c

@@ -1737,13 +1737,20 @@ static int __init parse_lapic(char *arg)
 }
 early_param("lapic", parse_lapic);
 
-static int __init parse_nolapic(char *arg)
+static int __init setup_disableapic(char *arg)
 {
 	disable_apic = 1;
 	setup_clear_cpu_cap(X86_FEATURE_APIC);
 	return 0;
 }
-early_param("nolapic", parse_nolapic);
+early_param("disableapic", setup_disableapic);
+
+/* same as disableapic, for compatibility */
+static int __init setup_nolapic(char *arg)
+{
+	return setup_disableapic(arg);
+}
+early_param("nolapic", setup_nolapic);
 
 static int __init parse_disable_apic_timer(char *arg)
 {

arch/x86/kernel/apic_64.c

@@ -1759,7 +1759,7 @@ early_param("nox2apic", setup_nox2apic);
 /*
  * APIC command line parameters
  */
-static __init int setup_disableapic(char *str)
+static int __init setup_disableapic(char *arg)
 {
 	disable_apic = 1;
 	setup_clear_cpu_cap(X86_FEATURE_APIC);
@@ -1768,9 +1768,9 @@ static __init int setup_disableapic(char *str)
 early_param("disableapic", setup_disableapic);
 
 /* same as disableapic, for compatibility */
-static __init int setup_nolapic(char *str)
+static int __init setup_nolapic(char *arg)
 {
-	return setup_disableapic(str);
+	return setup_disableapic(arg);
 }
 early_param("nolapic", setup_nolapic);