1 files changed, 7 insertions, 13 deletions

diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index b000017e4b5d..0e89ae7e7b22 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -612,10 +612,7 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
          * Also, we've got to be careful not to trash gate
          * 0x80, because int 0x80 is hm, kind of importantish. ;)
          */
-        static struct {
-                int vector;
-                int offset;
-        } pos[NR_CPUS] = { [ 0 ... NR_CPUS - 1] = {FIRST_DEVICE_VECTOR, 0} };
+        static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
         int old_vector = -1;
         int cpu;
 
@@ -631,14 +628,13 @@ static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
 
         for_each_cpu_mask(cpu, mask) {
                 cpumask_t domain;
-                int first, new_cpu;
+                int new_cpu;
                 int vector, offset;
 
                 domain = vector_allocation_domain(cpu);
-                first = first_cpu(domain);
 
-                vector = pos[first].vector;
-                offset = pos[first].offset;
+                vector = current_vector;
+                offset = current_offset;
 next:
                 vector += 8;
                 if (vector >= FIRST_SYSTEM_VECTOR) {
@@ -646,7 +642,7 @@ next:
                         offset = (offset + 1) % 8;
                         vector = FIRST_DEVICE_VECTOR + offset;
                 }
-                if (unlikely(pos[first].vector == vector))
+                if (unlikely(current_vector == vector))
                         continue;
                 if (vector == IA32_SYSCALL_VECTOR)
                         goto next;
@@ -654,10 +650,8 @@ next:
                         if (per_cpu(vector_irq, new_cpu)[vector] != -1)
                                 goto next;
                 /* Found one! */
-                for_each_cpu_mask(new_cpu, domain) {
-                        pos[new_cpu].vector = vector;
-                        pos[new_cpu].offset = offset;
-                }
+                current_vector = vector;
+                current_offset = offset;
                 if (old_vector >= 0) {
                         int old_cpu;
                         for_each_cpu_mask(old_cpu, irq_domain[irq])