diff options
Diffstat (limited to 'kernel/irq/proc.c')
| -rw-r--r-- | kernel/irq/proc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index f26e534c6585..8a64a4844cde 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -68,7 +68,9 @@ static int irq_affinity_write_proc(struct file *file, const char __user *buffer, */ cpus_and(tmp, new_value, cpu_online_map); if (cpus_empty(tmp)) - return -EINVAL; + /* Special case for empty set - allow the architecture + code to set default SMP affinity. */ + return select_smp_affinity(irq) ? -EINVAL : full_count; proc_set_irq_affinity(irq, new_value); |