Linux-libre 4.7.1-gnupck-4.7.1-gnu

1 files changed, 12 insertions, 15 deletions

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 3a519a011..8798b6c9e 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -139,12 +139,7 @@ void irq_domain_remove(struct irq_domain *domain)
 {
 	mutex_lock(&irq_domain_mutex);
 
-	/*
-	 * radix_tree_delete() takes care of destroying the root
-	 * node when all entries are removed. Shout if there are
-	 * any mappings left.
-	 */
-	WARN_ON(domain->revmap_tree.height);
+	WARN_ON(!radix_tree_empty(&domain->revmap_tree));
 
 	list_del(&domain->link);
 
@@ -243,14 +238,15 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
 EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
 
 /**
- * irq_find_matching_fwnode() - Locates a domain for a given fwnode
- * @fwnode: FW descriptor of the interrupt controller
+ * irq_find_matching_fwspec() - Locates a domain for a given fwspec
+ * @fwspec: FW specifier for an interrupt
  * @bus_token: domain-specific data
  */
-struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
+struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
 					    enum irq_domain_bus_token bus_token)
 {
 	struct irq_domain *h, *found = NULL;
+	struct fwnode_handle *fwnode = fwspec->fwnode;
 	int rc;
 
 	/* We might want to match the legacy controller last since
@@ -264,7 +260,9 @@ struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
 	 */
 	mutex_lock(&irq_domain_mutex);
 	list_for_each_entry(h, &irq_domain_list, link) {
-		if (h->ops->match)
+		if (h->ops->select && fwspec->param_count)
+			rc = h->ops->select(h, fwspec, bus_token);
+		else if (h->ops->match)
 			rc = h->ops->match(h, to_of_node(fwnode), bus_token);
 		else
 			rc = ((fwnode != NULL) && (h->fwnode == fwnode) &&
@@ -279,7 +277,7 @@ struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
 	mutex_unlock(&irq_domain_mutex);
 	return found;
 }
-EXPORT_SYMBOL_GPL(irq_find_matching_fwnode);
+EXPORT_SYMBOL_GPL(irq_find_matching_fwspec);
 
 /**
  * irq_set_default_host() - Set a "default" irq domain
@@ -574,11 +572,9 @@ unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec)
 	int virq;
 
 	if (fwspec->fwnode) {
-		domain = irq_find_matching_fwnode(fwspec->fwnode,
-						  DOMAIN_BUS_WIRED);
+		domain = irq_find_matching_fwspec(fwspec, DOMAIN_BUS_WIRED);
 		if (!domain)
-			domain = irq_find_matching_fwnode(fwspec->fwnode,
-							  DOMAIN_BUS_ANY);
+			domain = irq_find_matching_fwspec(fwspec, DOMAIN_BUS_ANY);
 	} else {
 		domain = irq_default_domain;
 	}
@@ -1099,6 +1095,7 @@ void irq_domain_free_irqs_common(struct irq_domain *domain, unsigned int virq,
 	}
 	irq_domain_free_irqs_parent(domain, virq, nr_irqs);
 }
+EXPORT_SYMBOL_GPL(irq_domain_free_irqs_common);
 
 /**
  * irq_domain_free_irqs_top - Clear handler and handler data, clear irqdata and free parent