[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, 3 insertions, 8 deletions

diff --git a/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c
index 47180b3fca56..bf3766754173 100644
--- a/arch/powerpc/sysdev/uic.c
+++ b/arch/powerpc/sysdev/uic.c
@@ -56,9 +56,6 @@ struct uic {
 
         /* For secondary UICs, the cascade interrupt's irqaction */
         struct irqaction cascade;
-
-        /* The device node of the interrupt controller */
-        struct device_node *of_node;
 };
 
 static void uic_unmask_irq(unsigned int virq)
@@ -220,8 +217,7 @@ out_unlock:
 
 static int uic_host_match(struct irq_host *h, struct device_node *node)
 {
-        struct uic *uic = h->host_data;
-        return uic->of_node == node;
+        return h->of_node == node;
 }
 
 static int uic_host_map(struct irq_host *h, unsigned int virq,
@@ -291,7 +287,6 @@ static struct uic * __init uic_init_one(struct device_node *node)
 
         memset(uic, 0, sizeof(*uic));
         spin_lock_init(&uic->lock);
-        uic->of_node = of_node_get(node);
         indexp = of_get_property(node, "cell-index", &len);
         if (!indexp || (len != sizeof(u32))) {
                 printk(KERN_ERR "uic: Device node %s has missing or invalid "
@@ -308,8 +303,8 @@ static struct uic * __init uic_init_one(struct device_node *node)
         }
         uic->dcrbase = *dcrreg;
 
-        uic->irqhost = irq_alloc_host(IRQ_HOST_MAP_LINEAR, NR_UIC_INTS,
-                                      &uic_host_ops, -1);
+        uic->irqhost = irq_alloc_host(of_node_get(node), IRQ_HOST_MAP_LINEAR,
+                                      NR_UIC_INTS, &uic_host_ops, -1);
         if (! uic->irqhost) {
                 of_node_put(node);
                 return NULL; /* FIXME: panic? */