[PATCH 1/2] genirq: Update stale comment for __irq_domain_add

[Punit Agrawal <punit.agrawal@arm.com>]

Commit 1bf4ddc46c5d ("irqdomain: Introduce irq_domain_create_{linear,
tree}") introduced the use of fwnode_handle to identify the interrupt
controller when calling __irq_domain_add but missed updating the kernel
doc parameters for the function.

Update this comment. While we are touching this code, also consolidate
the declaration and assignment of of_node.

Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
---
 kernel/irq/irqdomain.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 8798b6c..1fe2fea 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -80,7 +80,7 @@ EXPORT_SYMBOL_GPL(irq_domain_free_fwnode);
 
 /**
  * __irq_domain_add() - Allocate a new irq_domain data structure
- * @of_node: optional device-tree node of the interrupt controller
+ * @fwnode: firmware node for the interrupt controller
  * @size: Size of linear map; 0 for radix mapping only
  * @hwirq_max: Maximum number of interrupts supported by controller
  * @direct_max: Maximum value of direct maps; Use ~0 for no limit; 0 for no
@@ -97,9 +97,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
 				    void *host_data)
 {
 	struct irq_domain *domain;
-	struct device_node *of_node;
-
-	of_node = to_of_node(fwnode);
+	struct device_node *of_node = to_of_node(fwnode);
 
 	domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
 			      GFP_KERNEL, of_node_to_nid(of_node));
-- 
2.8.0.rc3