1 files changed, 1 insertions, 1 deletions

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index d3812eb84015..cc7834661427 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -55,7 +55,7 @@ int irq_select_affinity(unsigned int irq)
                 cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
         last_cpu = cpu;
 
-        irq_desc[irq].affinity = cpumask_of_cpu(cpu);
+        cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
         irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
         return 0;
 }