diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c
index c93c0d3c1a6b791aa69e60331fbdd8681089d186..6e743ecf863b55903ecb7830858891c33919b0ec 100644
--- a/arch/x86/kernel/io_apic_32.c
+++ b/arch/x86/kernel/io_apic_32.c
@@ -1310,8 +1310,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 
 	memset(&entry,0,sizeof(entry));
 
-	disable_8259A_irq(0);
-
 	/* mask LVT0 */
 	apic_write_around(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
 
@@ -1337,8 +1335,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 	 * Add it to the IO-APIC irq-routing table:
 	 */
 	ioapic_write_entry(apic, pin, entry);
-
-	enable_8259A_irq(0);
 }
 
 void __init print_IO_APIC(void)
diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 2a60bfb7446fdeab9a5feb952ff0fdf95e8d192c..83d4e117746ba12014f703489bea9778c01a16ab 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -906,8 +906,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 
 	memset(&entry, 0, sizeof(entry));
 
-	disable_8259A_irq(0);
-
 	/* mask LVT0 */
 	apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
 
@@ -933,8 +931,6 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 	 * Add it to the IO-APIC irq-routing table:
 	 */
 	ioapic_write_entry(apic, pin, entry);
-
-	enable_8259A_irq(0);
 }
 
 void __apicdebuginit print_IO_APIC(void)