diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 38a3ff30bde..519cd4e6f9e 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -836,14 +836,15 @@ u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 }; int assign_irq_vector(int irq) { static int current_vector = FIRST_DEVICE_VECTOR, offset = 0; + unsigned long flags; int vector; BUG_ON(irq != AUTO_ASSIGN && (unsigned)irq >= NR_IRQ_VECTORS); - spin_lock(&vector_lock); + spin_lock_irqsave(&vector_lock, flags); if (irq != AUTO_ASSIGN && IO_APIC_VECTOR(irq) > 0) { - spin_unlock(&vector_lock); + spin_unlock_irqrestore(&vector_lock, flags); return IO_APIC_VECTOR(irq); } next: @@ -862,7 +863,7 @@ next: if (irq != AUTO_ASSIGN) IO_APIC_VECTOR(irq) = vector; - spin_unlock(&vector_lock); + spin_unlock_irqrestore(&vector_lock, flags); return vector; } |