diff options
Diffstat (limited to 'arch/i386/kernel/apic.c')
| -rw-r--r-- | arch/i386/kernel/apic.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c index acd3f1e34ca..776c90989e0 100644 --- a/arch/i386/kernel/apic.c +++ b/arch/i386/kernel/apic.c @@ -75,8 +75,10 @@ void ack_bad_irq(unsigned int irq) * holds up an irq slot - in excessive cases (when multiple * unexpected vectors occur) that might lock up the APIC * completely. + * But only ack when the APIC is enabled -AK */ - ack_APIC_irq(); + if (cpu_has_apic) + ack_APIC_irq(); } void __init apic_intr_init(void) @@ -568,16 +570,18 @@ void __devinit setup_local_APIC(void) */ void lapic_shutdown(void) { + unsigned long flags; + if (!cpu_has_apic) return; - local_irq_disable(); + local_irq_save(flags); clear_local_APIC(); if (enabled_via_apicbase) disable_local_APIC(); - local_irq_enable(); + local_irq_restore(flags); } #ifdef CONFIG_PM @@ -1303,6 +1307,7 @@ int __init APIC_init_uniprocessor (void) if (!cpu_has_apic && APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) { printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n", boot_cpu_physical_apicid); + clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability); return -1; } |