diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/manage.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 391cb738b2db..e688e7e06772 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -1574,20 +1574,27 @@ EXPORT_SYMBOL_GPL(remove_irq); * have completed. * * This function must not be called from interrupt context. + * + * Returns the devname argument passed to request_irq. */ -void free_irq(unsigned int irq, void *dev_id) +const void *free_irq(unsigned int irq, void *dev_id) { struct irq_desc *desc = irq_to_desc(irq); + struct irqaction *action; + const char *devname; if (!desc || WARN_ON(irq_settings_is_per_cpu_devid(desc))) - return; + return NULL; #ifdef CONFIG_SMP if (WARN_ON(desc->affinity_notify)) desc->affinity_notify = NULL; #endif - kfree(__free_irq(irq, dev_id)); + action = __free_irq(irq, dev_id); + devname = action->name; + kfree(action); + return devname; } EXPORT_SYMBOL(free_irq); |