powerpc: Fix irq_alloc_host() reference counting and callers

When I changed irq_alloc_host() to take an of_node
(52964f87c64e6c6ea671b5bf3030fb1494090a48: "Add an optional
device_node pointer to the irq_host"), I botched the reference
counting semantics.

Stephen pointed out that it's irq_alloc_host()'s business if
it needs to take an additional reference to the device_node,
the caller shouldn't need to care.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index b5199752ac60..e9238556ae50 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -498,7 +498,7 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
         host->revmap_type = revmap_type;
         host->inval_irq = inval_irq;
         host->ops = ops;
-        host->of_node = of_node;
+        host->of_node = of_node_get(of_node);
 
         if (host->ops->match == NULL)
                 host->ops->match = default_irq_host_match;