[POWERPC] Invert null match behaviour for irq_hosts

Currently if you don't specify a match callback for your irq_host it's
assumed you match everything. This is a kind of opt-out approach, and
turns out to be the exception rather than the rule.

So change the semantics to be opt-in, ie. you don't match anything unless
you provide a match callback.  This in itself isn't very useful, but will
allow us to provide a default match implementation in a subsequent patch.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/celleb/interrupt.c b/arch/powerpc/platforms/celleb/interrupt.c
index 4ecdf06e421b..c7c68ca70c82 100644
--- a/arch/powerpc/platforms/celleb/interrupt.c
+++ b/arch/powerpc/platforms/celleb/interrupt.c
@@ -175,11 +175,18 @@ static int beatic_pic_host_xlate(struct irq_host *h, struct device_node *ct,
         return 0;
 }
 
+static int beatic_pic_host_match(struct irq_host *h, struct device_node *np)
+{
+        /* Match all */
+        return 1;
+}
+
 static struct irq_host_ops beatic_pic_host_ops = {
         .map = beatic_pic_host_map,
         .remap = beatic_pic_host_remap,
         .unmap = beatic_pic_host_unmap,
         .xlate = beatic_pic_host_xlate,
+        .match = beatic_pic_host_match,
 };
 
 /*