diff options
Diffstat (limited to 'kernel/irq/irqdomain.c')
| -rw-r--r-- | kernel/irq/irqdomain.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 8c3577f..79baaf8 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -187,10 +187,12 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, EXPORT_SYMBOL_GPL(irq_domain_add_legacy); /** - * irq_find_host() - Locates a domain for a given device node + * irq_find_matching_host() - Locates a domain for a given device node * @node: device-tree node of the interrupt controller + * @bus_token: domain-specific data */ -struct irq_domain *irq_find_host(struct device_node *node) +struct irq_domain *irq_find_matching_host(struct device_node *node, + enum irq_domain_bus_token bus_token) { struct irq_domain *h, *found = NULL; int rc; @@ -199,13 +201,19 @@ struct irq_domain *irq_find_host(struct device_node *node) * it might potentially be set to match all interrupts in * the absence of a device node. This isn't a problem so far * yet though... + * + * bus_token == DOMAIN_BUS_ANY matches any domain, any other + * values must generate an exact match for the domain to be + * selected. */ mutex_lock(&irq_domain_mutex); list_for_each_entry(h, &irq_domain_list, link) { if (h->ops->match) - rc = h->ops->match(h, node); + rc = h->ops->match(h, node, bus_token); else - rc = (h->of_node != NULL) && (h->of_node == node); + rc = ((h->of_node != NULL) && (h->of_node == node) && + ((bus_token == DOMAIN_BUS_ANY) || + (h->bus_token == bus_token))); if (rc) { found = h; @@ -215,7 +223,7 @@ struct irq_domain *irq_find_host(struct device_node *node) mutex_unlock(&irq_domain_mutex); return found; } -EXPORT_SYMBOL_GPL(irq_find_host); +EXPORT_SYMBOL_GPL(irq_find_matching_host); /** * irq_set_default_host() - Set a "default" irq domain |