cpufreq: exynos: Broadcast frequency change notifications for all cores

On Exynos SoCs all cores share the same frequency setting, so changing
frequency of one core will affect rest of cores.

This patch modifies the exynos-cpufreq driver to inform cpufreq core
about this behavior and broadcast frequency change notifications for all
cores.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index af2d81e..c0d54a8 100644 (file)
--- a/drivers/cpufreq/exynos-cpufreq.c
+++ b/drivers/cpufreq/exynos-cpufreq.c
@@ -100,7 +100,8 @@ static int exynos_target(struct cpufreq_policy *policy,
        }
        arm_volt = volt_table[index];
 
-       cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+       for_each_cpu(freqs.cpu, policy->cpus)
+               cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
 
        /* When the new frequency is higher than current frequency */
        if ((freqs.new > freqs.old) && !safe_arm_volt) {
@@ -115,7 +116,8 @@ static int exynos_target(struct cpufreq_policy *policy,
        if (freqs.new != freqs.old)
                exynos_info->set_freq(old_index, index);
 
-       cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+       for_each_cpu(freqs.cpu, policy->cpus)
+               cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
 
        /* When the new frequency is lower than current frequency */
        if ((freqs.new < freqs.old) ||
@@ -235,6 +237,7 @@ static int exynos_cpufreq_cpu_init(struct cpufreq_policy *policy)
                cpumask_copy(policy->related_cpus, cpu_possible_mask);
                cpumask_copy(policy->cpus, cpu_online_mask);
        } else {
+               policy->shared_type = CPUFREQ_SHARED_TYPE_ANY;
                cpumask_setall(policy->cpus);
        }