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SubjectRe: [RFC PATCH] cpufreq: cpufreq-cpu0: do not allow transitions with regulators suspended
On Thursday 14 November 2013 07:57 PM, Nishanth Menon wrote:
> I am guessing this is a little too early for restarting policy here
> considering syscore_ops->resume is pretty early..

Yeah, looks like that..

> http://pastebin.mozilla.org/3602746 is the equivalent patch for v3.12
> http://pastebin.mozilla.org/3602747 is the result.

Can you try this instead of last diff I sent?


diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index dc67fa0..e70e906 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1324,6 +1324,15 @@ static void handle_update(struct work_struct *work)
container_of(work, struct cpufreq_policy, update);
unsigned int cpu = policy->cpu;
pr_debug("handle_update for cpu %u called\n", cpu);
+
+ if (has_target() && !policy->governor_enabled) {
+ if ((ret = __cpufreq_governor(policy, CPUFREQ_GOV_START)) ||
+ (ret = __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))) {
+ pr_err("%s: Failed to start governor\n", __func__);
+ goto fail;
+ }
+ }
+
cpufreq_update_policy(cpu);
}



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