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-rw-r--r--kernel/irq/irqdomain.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 8c3577fef78c..79baaf8a7813 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