[POWERPC] powermac: Fix G5-cpufreq for cpu on/offline

The original code here is wrong, it applies "previous" knowledge.
The way the cpufreq core is designed is that the policy for the
secondary CPU that comes online says that it must in fact not
use this policy but use the same as the other CPUs that are
listed, which in fact is CPU#0.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index 567d5523b6909e294f4fd204890848e940265a2e..00f50298c342aad55c982687e03bddbde0d731cb 100644 (file)
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -357,13 +357,13 @@ static unsigned int g5_cpufreq_get_speed(unsigned int cpu)
 
 static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
-       if (policy->cpu != 0)
-               return -ENODEV;
-
        policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
        policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
        policy->cur = g5_cpu_freqs[g5_query_freq()].frequency;
-       policy->cpus = cpu_possible_map;
+       /* secondary CPUs are tied to the primary one by the
+        * cpufreq core if in the secondary policy we tell it that
+        * it actually must be one policy together with all others. */
+       policy->cpus = cpu_online_map;
        cpufreq_frequency_table_get_attr(g5_cpu_freqs, policy->cpu);
 
        return cpufreq_frequency_table_cpuinfo(policy,