[PATCH] ppc64: fix smp_startup_cpu for cpu hotplug

This change is needed in order to allow cpus to be onlined after
boot.  This used to work but the declaration of
pseries_secondary_smp_init in this file was changed in Ben's big
cleanup patch a while back, so the cpu would start at a bad address.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/smp.c

@@ -390,7 +390,8 @@ static unsigned int find_physical_cpu_to_start(unsigned int old_hwindex)
 static inline int __devinit smp_startup_cpu(unsigned int lcpu)
 {
 	int status;
-	unsigned long start_here = __pa(pseries_secondary_smp_init);
+	unsigned long start_here = __pa((u32)*((unsigned long *)
+					       pseries_secondary_smp_init));
 	unsigned int pcpu;
 
 	/* At boot time the cpus are already spinning in hold