[PATCH] cpufreq: exynos: Broadcast frequency change notifications for all cores

[t.figa@samsung.com (Tomasz Figa)]

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>
---
 drivers/cpufreq/exynos-cpufreq.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c
index af2d81e..c0d54a8 100644
--- 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);
 	}
 
-- 
1.8.0