[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, 4 insertions, 3 deletions

diff --git a/arch/powerpc/sysdev/mpic_msi.c b/arch/powerpc/sysdev/mpic_msi.c
index b076793033c2..9ca4d8f444ff 100644
--- a/arch/powerpc/sysdev/mpic_msi.c
+++ b/arch/powerpc/sysdev/mpic_msi.c
@@ -117,16 +117,17 @@ static int mpic_msi_reserve_dt_hwirqs(struct mpic *mpic)
         int i, len;
         const u32 *p;
 
-        p = of_get_property(mpic->of_node, "msi-available-ranges", &len);
+        p = of_get_property(mpic->irqhost->of_node,
+                            "msi-available-ranges", &len);
         if (!p) {
                 pr_debug("mpic: no msi-available-ranges property found on %s\n",
-                          mpic->of_node->full_name);
+                          mpic->irqhost->of_node->full_name);
                 return -ENODEV;
         }
 
         if (len % 8 != 0) {
                 printk(KERN_WARNING "mpic: Malformed msi-available-ranges "
-                       "property on %s\n", mpic->of_node->full_name);
+                       "property on %s\n", mpic->irqhost->of_node->full_name);
                 return -EINVAL;
         }