diff options
Diffstat (limited to 'kernel/irq/proc.c')
| -rw-r--r-- | kernel/irq/proc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index f26e534c658..d03b5eef8ce 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -10,6 +10,8 @@ #include <linux/proc_fs.h> #include <linux/interrupt.h> +#include "internals.h" + static struct proc_dir_entry *root_irq_dir, *irq_dir[NR_IRQS]; #ifdef CONFIG_SMP @@ -68,7 +70,9 @@ 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); |