diff options
Diffstat (limited to 'arch/x86/kernel/io_apic_64.c')
| -rw-r--r-- | arch/x86/kernel/io_apic_64.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c index 1b8cccb5ba2..a054db9ef19 100644 --- a/arch/x86/kernel/io_apic_64.c +++ b/arch/x86/kernel/io_apic_64.c @@ -1124,7 +1124,12 @@ static void ioapic_register_intr(int irq, unsigned long trigger) { struct irq_desc *desc; - desc = irq_to_desc(irq); + /* first time to use this irq_desc */ + if (irq < 16) + desc = irq_to_desc(irq); + else + desc = irq_to_desc_alloc(irq); + if (trigger) desc->status |= IRQ_LEVEL; else @@ -1919,6 +1924,9 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void) irq = __get_cpu_var(vector_irq)[vector]; desc = irq_to_desc(irq); + if (!desc) + continue; + cfg = irq_cfg(irq); spin_lock(&desc->lock); if (!cfg->move_cleanup_count) |