nr_cpus cmdline parameter not working

[Mark Salter]

I noticed that nr_cpus=1 doesn't appear to have any effect on a
pandaboard (and probably others from the looks of things). This
changes seems to be needed, but I'm not really sure if this is
the right thing or not.

diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index ce65e93..a1198ac 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -117,6 +117,9 @@ void __init smp_init_cpus(void)
 		ncores = NR_CPUS;
 	}
 
+	if (ncores > nr_cpu_ids)
+		ncores = nr_cpu_ids;
+
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);

--Mark