Merge branches 'btc', 'dma', 'entry', 'fixes', 'linker-layout', 'misc', 'mmci', ...

[pandora-kernel.git] / arch / arm / kernel / smp.c

diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index e7f92a4..167e3cb 100644 (file)
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -365,14 +365,21 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         */
        if (max_cpus > ncores)
                max_cpus = ncores;
-
-       if (max_cpus > 1) {
+       if (ncores > 1 && max_cpus) {
                /*
                 * Enable the local timer or broadcast device for the
                 * boot CPU, but only if we have more than one CPU.
                 */
                percpu_timer_setup();
 
+               /*
+                * Initialise the present map, which describes the set of CPUs
+                * actually populated at the present time. A platform should
+                * re-initialize the map in platform_smp_prepare_cpus() if
+                * present != possible (e.g. physical hotplug).
+                */
+               init_cpu_present(&cpu_possible_map);
+
                /*
                 * Initialise the SCU if there are more than one CPU
                 * and let them know where to start.