powerpc/pmac: Don't register pmac PIC syscore ops when HW not present

The Apple custom PIC only exist in some earlier machine models,
anything with an MPIC will crash on suspend if we register those
syscore ops unconditionally.

This is a regression caused by commit f5a592f7d74e ("PM / PowerPC: Use
struct syscore_ops instead of sysdevs for PM")

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 9089b04211919506cb1a443025d0f058d5deff3c..7667db448aa73cc58aacaf72e74fa0c5a2339fc6 100644 (file)
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -715,7 +715,8 @@ static struct syscore_ops pmacpic_syscore_ops = {
 
 static int __init init_pmacpic_syscore(void)
 {
-       register_syscore_ops(&pmacpic_syscore_ops);
+       if (pmac_irq_hw[0])
+               register_syscore_ops(&pmacpic_syscore_ops);
        return 0;
 }