diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/resend.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index edec335c0a7a..5f2c66860ac6 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -68,11 +68,16 @@ static int irq_sw_resend(struct irq_desc *desc) */ if (!desc->parent_irq) return -EINVAL; + + desc = irq_to_desc(desc->parent_irq); + if (!desc) + return -EINVAL; } /* Add to resend_list and activate the softirq: */ raw_spin_lock(&irq_resend_lock); - hlist_add_head(&desc->resend_node, &irq_resend_list); + if (hlist_unhashed(&desc->resend_node)) + hlist_add_head(&desc->resend_node, &irq_resend_list); raw_spin_unlock(&irq_resend_lock); tasklet_schedule(&resend_tasklet); return 0; |