Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / kernel / apic / io_apic.c

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 2fc696e..f6cd5b4 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -54,7 +54,6 @@
 #include <asm/dma.h>
 #include <asm/timer.h>
 #include <asm/i8259.h>
-#include <asm/nmi.h>
 #include <asm/msidef.h>
 #include <asm/hypertransport.h>
 #include <asm/setup.h>
@@ -2646,24 +2645,6 @@ static void lapic_register_intr(int irq)
                                      "edge");
 }
 
-static void __init setup_nmi(void)
-{
-       /*
-        * Dirty trick to enable the NMI watchdog ...
-        * We put the 8259A master into AEOI mode and
-        * unmask on all local APICs LVT0 as NMI.
-        *
-        * The idea to use the 8259A in AEOI mode ('8259A Virtual Wire')
-        * is from Maciej W. Rozycki - so we do not have to EOI from
-        * the NMI handler or the timer interrupt.
-        */
-       apic_printk(APIC_VERBOSE, KERN_INFO "activating NMI Watchdog ...");
-
-       enable_NMI_through_LVT0();
-
-       apic_printk(APIC_VERBOSE, " done.\n");
-}
-
 /*
  * This looks a bit hackish but it's about the only one way of sending
  * a few INTA cycles to 8259As and any associated glue logic.  ICR does
@@ -2769,15 +2750,6 @@ static inline void __init check_timer(void)
         */
        apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
        legacy_pic->init(1);
-#ifdef CONFIG_X86_32
-       {
-               unsigned int ver;
-
-               ver = apic_read(APIC_LVR);
-               ver = GET_APIC_VERSION(ver);
-               timer_ack = (nmi_watchdog == NMI_IO_APIC && !APIC_INTEGRATED(ver));
-       }
-#endif
 
        pin1  = find_isa_irq_pin(0, mp_INT);
        apic1 = find_isa_irq_apic(0, mp_INT);
@@ -2825,10 +2797,6 @@ static inline void __init check_timer(void)
                                unmask_ioapic(cfg);
                }
                if (timer_irq_works()) {
-                       if (nmi_watchdog == NMI_IO_APIC) {
-                               setup_nmi();
-                               legacy_pic->unmask(0);
-                       }
                        if (disable_timer_pin_1 > 0)
                                clear_IO_APIC_pin(0, pin1);
                        goto out;
@@ -2854,11 +2822,6 @@ static inline void __init check_timer(void)
                if (timer_irq_works()) {
                        apic_printk(APIC_QUIET, KERN_INFO "....... works.\n");
                        timer_through_8259 = 1;
-                       if (nmi_watchdog == NMI_IO_APIC) {
-                               legacy_pic->mask(0);
-                               setup_nmi();
-                               legacy_pic->unmask(0);
-                       }
                        goto out;
                }
                /*
@@ -2870,15 +2833,6 @@ static inline void __init check_timer(void)
                apic_printk(APIC_QUIET, KERN_INFO "....... failed.\n");
        }
 
-       if (nmi_watchdog == NMI_IO_APIC) {
-               apic_printk(APIC_QUIET, KERN_WARNING "timer doesn't work "
-                           "through the IO-APIC - disabling NMI Watchdog!\n");
-               nmi_watchdog = NMI_NONE;
-       }
-#ifdef CONFIG_X86_32
-       timer_ack = 0;
-#endif
-
        apic_printk(APIC_QUIET, KERN_INFO
                    "...trying to set up timer as Virtual Wire IRQ...\n");