1 files changed, 5 insertions, 4 deletions

diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 61317f4be444..72ae414e4d49 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -1163,14 +1163,15 @@ 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:
@@ -1181,7 +1182,7 @@ next:
         if (current_vector >= FIRST_SYSTEM_VECTOR) {
                 offset++;
                 if (!(offset%8)) {
-                        spin_unlock(&vector_lock);
+                        spin_unlock_irqrestore(&vector_lock, flags);
                         return -ENOSPC;
                 }
                 current_vector = FIRST_DEVICE_VECTOR + offset;
@@ -1192,7 +1193,7 @@ next:
         if (irq != AUTO_ASSIGN)
                 IO_APIC_VECTOR(irq) = vector;
 
-        spin_unlock(&vector_lock);
+        spin_unlock_irqrestore(&vector_lock, flags);
 
         return vector;
 }