1 files changed, 0 insertions, 18 deletions

diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index fb5cc5e14cfa..25a28a245937 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -22,10 +22,6 @@
 #include <asm/hpet.h>
 #include <asm/time.h>
 
-#if defined(CONFIG_X86_32) && defined(CONFIG_X86_IO_APIC)
-int timer_ack;
-#endif
-
 #ifdef CONFIG_X86_64
 volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
 #endif
@@ -63,20 +59,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
         /* Keep nmi watchdog up to date */
         inc_irq_stat(irq0_irqs);
 
-        /* Optimized out for !IO_APIC and x86_64 */
-        if (timer_ack) {
-                /*
-                 * Subtle, when I/O APICs are used we have to ack timer IRQ
-                 * manually to deassert NMI lines for the watchdog if run
-                 * on an 82489DX-based system.
-                 */
-                raw_spin_lock(&i8259A_lock);
-                outb(0x0c, PIC_MASTER_OCW3);
-                /* Ack the IRQ; AEOI will end it automatically. */
-                inb(PIC_MASTER_POLL);
-                raw_spin_unlock(&i8259A_lock);
-        }
-
         global_clock_event->event_handler(global_clock_event);
 
         /* MCA bus quirk: Acknowledge irq0 by setting bit 7 in port 0x61 */