[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, 2 insertions, 5 deletions

diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 473c415e9e25..05a56e55804c 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -511,10 +511,8 @@ static struct irq_chip ipic_irq_chip = {
 
 static int ipic_host_match(struct irq_host *h, struct device_node *node)
 {
-        struct ipic *ipic = h->host_data;
-
         /* Exact match, unless ipic node is NULL */
-        return ipic->of_node == NULL || ipic->of_node == node;
+        return h->of_node == NULL || h->of_node == node;
 }
 
 static int ipic_host_map(struct irq_host *h, unsigned int virq,
@@ -568,9 +566,8 @@ struct ipic * __init ipic_init(struct device_node *node, unsigned int flags)
                 return NULL;
 
         memset(ipic, 0, sizeof(struct ipic));
-        ipic->of_node = of_node_get(node);
 
-        ipic->irqhost = irq_alloc_host(IRQ_HOST_MAP_LINEAR,
+        ipic->irqhost = irq_alloc_host(of_node_get(node), IRQ_HOST_MAP_LINEAR,
                                        NR_IPIC_INTS,
                                        &ipic_host_ops, 0);
         if (ipic->irqhost == NULL) {