irqdomain: Convert irqdomain-%3Eof_node to fwnode

Now that we have everyone accessing the of_node field via the
irq_domain_get_of_node accessor, it is pretty easy to swap it
for a pointer to a fwnode_handle.

This translates into a few limited changes in __irq_domain_add,
and an updated irq_domain_get_of_node.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Graeme Gregory <graeme@xora.org.uk>
Cc: Jake Oshins <jakeo@microsoft.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1444737105-31573-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 8f8b538b067d..1aee5c118bae 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -46,17 +46,21 @@ struct irq_domain *__irq_domain_add(struct device_node *of_node, int size,
                                     void *host_data)
 {
         struct irq_domain *domain;
+        struct fwnode_handle *fwnode;
 
         domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
                               GFP_KERNEL, of_node_to_nid(of_node));
         if (WARN_ON(!domain))
                 return NULL;
 
+        of_node_get(of_node);
+        fwnode = of_node ? &of_node->fwnode : NULL;
+
         /* Fill structure */
         INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);
         domain->ops = ops;
         domain->host_data = host_data;
-        domain->of_node = of_node_get(of_node);
+        domain->fwnode = fwnode;
         domain->hwirq_max = hwirq_max;
         domain->revmap_size = size;
         domain->revmap_direct_max_irq = direct_max;