[POWERPC] Check for NULL ppc_md.init_IRQ() before calling

Check to make sure ppc_md.init_IRQ has been set before calling it.

Signed-off-by: Sonny Rao <sonny@burdell.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index a3351561d283..2fc87862146c 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -336,7 +336,8 @@ void do_IRQ(struct pt_regs *regs)
 
 void __init init_IRQ(void)
 {
-        ppc_md.init_IRQ();
+        if (ppc_md.init_IRQ)
+                ppc_md.init_IRQ();
 #ifdef CONFIG_PPC64
         irq_ctx_init();
 #endif