Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6

[linux-2.6] / arch / x86 / kernel / apic_32.c

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 20d4dbc42e6ef2ce54fbdf8d668bf3f0bc9f4460..35a568ea8400269f4fde96377e76e1013fc5c3e3 100644 (file)
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -99,6 +99,8 @@ static DEFINE_PER_CPU(struct clock_event_device, lapic_events);
 /* Local APIC was disabled by the BIOS and enabled by the kernel */
 static int enabled_via_apicbase;
 
+static unsigned long apic_phys;
+
 /*
  * Get the LAPIC version
  */
@@ -377,8 +379,10 @@ void __init setup_boot_APIC_clock(void)
         */
        if (local_apic_timer_disabled) {
                /* No broadcast on UP ! */
-               if (num_possible_cpus() > 1)
+               if (num_possible_cpus() > 1) {
+                       lapic_clockevent.mult = 1;
                        setup_APIC_timer();
+               }
                return;
        }
 
@@ -629,9 +633,14 @@ int setup_profiling_timer(unsigned int multiplier)
  */
 void clear_local_APIC(void)
 {
-       int maxlvt = lapic_get_maxlvt();
+       int maxlvt;
        u32 v;
 
+       /* APIC hasn't been mapped yet */
+       if (!apic_phys)
+               return;
+
+       maxlvt = lapic_get_maxlvt();
        /*
         * Masking an LVT entry can trigger a local APIC error
         * if the vector is zero. Mask LVTERR first to prevent this.
@@ -1118,8 +1127,6 @@ no_apic:
  */
 void __init init_apic_mappings(void)
 {
-       unsigned long apic_phys;
-
        /*
         * If no local APIC can be found then set up a fake all
         * zeroes page to simulate the local APIC and another