[POWERPC] Add an optional device_node pointer to the irq_host

The majority of irq_host implementations (3 out of 4) are associated
with a device_node, and need to stash it somewhere. Rather than having
it somewhere different for each host, add an optional device_node pointer
to the irq_host structure.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index dfad0e469eec..79b451247b89 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -418,10 +418,11 @@ irq_hw_number_t virq_to_hw(unsigned int virq)
 }
 EXPORT_SYMBOL_GPL(virq_to_hw);
 
-__init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
-                                                unsigned int revmap_arg,
-                                                struct irq_host_ops *ops,
-                                                irq_hw_number_t inval_irq)
+__init_refok struct irq_host *irq_alloc_host(struct device_node *of_node,
+                                unsigned int revmap_type,
+                                unsigned int revmap_arg,
+                                struct irq_host_ops *ops,
+                                irq_hw_number_t inval_irq)
 {
         struct irq_host *host;
         unsigned int size = sizeof(struct irq_host);
@@ -446,6 +447,7 @@ __init_refok struct irq_host *irq_alloc_host(unsigned int revmap_type,
         host->revmap_type = revmap_type;
         host->inval_irq = inval_irq;
         host->ops = ops;
+        host->of_node = of_node;
 
         spin_lock_irqsave(&irq_big_lock, flags);