cpufreq: Notify all policy->cpus in cpufreq_notify_transition()

policy->cpus contains all online cpus that have single shared clock line. And
their frequencies are always updated together.

Many SMP system's cpufreq drivers take care of this in individual drivers but
the best place for this code is in cpufreq core.

This patch modifies cpufreq_notify_transition() to notify frequency change for
all cpus in policy->cpus and hence updates all users of this API.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/arch/arm/mach-s3c24xx/cpufreq.c b/arch/arm/mach-s3c24xx/cpufreq.c
index 5f181e733eee..3c0e78ede0da 100644
--- a/arch/arm/mach-s3c24xx/cpufreq.c
+++ b/arch/arm/mach-s3c24xx/cpufreq.c
@@ -204,7 +204,6 @@ static int s3c_cpufreq_settarget(struct cpufreq_policy *policy,
         freqs.old = cpu_cur.freq;
         freqs.new = cpu_new.freq;
 
-        freqs.freqs.cpu = 0;
         freqs.freqs.old = cpu_cur.freq.armclk / 1000;
         freqs.freqs.new = cpu_new.freq.armclk / 1000;
 
@@ -218,9 +217,7 @@ static int s3c_cpufreq_settarget(struct cpufreq_policy *policy,
         s3c_cpufreq_updateclk(clk_pclk, cpu_new.freq.pclk);
 
         /* start the frequency change */
-
-        if (policy)
-                cpufreq_notify_transition(&freqs.freqs, CPUFREQ_PRECHANGE);
+        cpufreq_notify_transition(policy, &freqs.freqs, CPUFREQ_PRECHANGE);
 
         /* If hclk is staying the same, then we do not need to
          * re-write the IO or the refresh timings whilst we are changing
@@ -264,8 +261,7 @@ static int s3c_cpufreq_settarget(struct cpufreq_policy *policy,
         local_irq_restore(flags);
 
         /* notify everyone we've done this */
-        if (policy)
-                cpufreq_notify_transition(&freqs.freqs, CPUFREQ_POSTCHANGE);
+        cpufreq_notify_transition(policy, &freqs.freqs, CPUFREQ_POSTCHANGE);
 
         s3c_freq_dbg("%s: finished\n", __func__);
         return 0;