diff options
| -rw-r--r-- | kernel/irq/manage.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 0139908b8d53..3e693430bfe1 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1168,6 +1168,14 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) new->flags &= ~IRQF_ONESHOT; mutex_lock(&desc->request_mutex); + if (!desc->action) { + ret = irq_request_resources(desc); + if (ret) { + pr_err("Failed to request resources for %s (irq %d) on irqchip %s\n", + new->name, irq, desc->irq_data.chip->name); + goto out_mutex; + } + } chip_bus_lock(desc); @@ -1271,13 +1279,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) } if (!shared) { - ret = irq_request_resources(desc); - if (ret) { - pr_err("Failed to request resources for %s (irq %d) on irqchip %s\n", - new->name, irq, desc->irq_data.chip->name); - goto out_unlock; - } - init_waitqueue_head(&desc->wait_for_threads); /* Setup the type (level, edge polarity) if configured: */ @@ -1386,6 +1387,10 @@ out_unlock: chip_bus_sync_unlock(desc); + if (!desc->action) + irq_release_resources(desc); + +out_mutex: mutex_unlock(&desc->request_mutex); out_thread: @@ -1484,7 +1489,6 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id) if (!desc->action) { irq_settings_clr_disable_unlazy(desc); irq_shutdown(desc); - irq_release_resources(desc); irq_remove_timings(desc); } @@ -1527,6 +1531,9 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id) } } + if (!desc->action) + irq_release_resources(desc); + mutex_unlock(&desc->request_mutex); irq_chip_pm_put(&desc->irq_data); |