Merge branch 'cpus4096' into irq/threaded

[safe/jmp/linux-2.6] / kernel / irq / numa_migrate.c

diff --git a/kernel/irq/numa_migrate.c b/kernel/irq/numa_migrate.c
index 666260e..243d612 100644 (file)
--- a/kernel/irq/numa_migrate.c
+++ b/kernel/irq/numa_migrate.c
@@ -17,16 +17,11 @@ static void init_copy_kstat_irqs(struct irq_desc *old_desc,
                                 struct irq_desc *desc,
                                 int cpu, int nr)
 {
-       unsigned long bytes;
-
        init_kstat_irqs(desc, cpu, nr);
 
-       if (desc->kstat_irqs != old_desc->kstat_irqs) {
-               /* Compute how many bytes we need per irq and allocate them */
-               bytes = nr * sizeof(unsigned int);
-
-               memcpy(desc->kstat_irqs, old_desc->kstat_irqs, bytes);
-       }
+       if (desc->kstat_irqs != old_desc->kstat_irqs)
+               memcpy(desc->kstat_irqs, old_desc->kstat_irqs,
+                        nr * sizeof(*desc->kstat_irqs));
 }
 
 static void free_kstat_irqs(struct irq_desc *old_desc, struct irq_desc *desc)
@@ -78,7 +73,7 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
        desc = irq_desc_ptrs[irq];
 
        if (desc && old_desc != desc)
-                       goto out_unlock;
+               goto out_unlock;
 
        node = cpu_to_node(cpu);
        desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node);
@@ -97,10 +92,15 @@ static struct irq_desc *__real_move_irq_desc(struct irq_desc *old_desc,
        }
 
        irq_desc_ptrs[irq] = desc;
+       spin_unlock_irqrestore(&sparse_irq_lock, flags);
 
        /* free the old one */
        free_one_irq_desc(old_desc, desc);
+       spin_unlock(&old_desc->lock);
        kfree(old_desc);
+       spin_lock(&desc->lock);
+
+       return desc;
 
 out_unlock:
        spin_unlock_irqrestore(&sparse_irq_lock, flags);