diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/manage.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 90a944a7fadc..cae900a849c4 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -141,7 +141,7 @@ int can_request_irq(unsigned int irq, unsigned long irqflags) { struct irqaction *action; - if (irq >= NR_IRQS) + if (irq >= NR_IRQS || irq_desc[irq].status & IRQ_NOREQUEST) return 0; action = irq_desc[irq].action; @@ -356,6 +356,8 @@ int request_irq(unsigned int irq, return -EINVAL; if (irq >= NR_IRQS) return -EINVAL; + if (irq_desc[irq].status & IRQ_NOREQUEST) + return -EINVAL; if (!handler) return -EINVAL; |