Commit 0961dd0d authored by Thomas Renninger's avatar Thomas Renninger Committed by Dave Jones

[CPUFREQ] _PPC frequency change issues

BIOS might change frequency behind our back when BIOS changes allowed
frequencies via _PPC.  In this case cpufreq core got out of sync.
Ask driver for current freq and notify governors about a change
Signed-off-by: default avatarThomas Renninger <trenn@suse.de>
Signed-off-by: default avatarVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent c70ca00f
......@@ -1429,6 +1429,14 @@ int cpufreq_update_policy(unsigned int cpu)
policy.policy = data->user_policy.policy;
policy.governor = data->user_policy.governor;
/* BIOS might change freq behind our back
-> ask driver for current freq and notify governors about a change */
if (cpufreq_driver->get) {
policy.cur = cpufreq_driver->get(cpu);
if (data->cur != policy.cur)
cpufreq_out_of_sync(cpu, data->cur, policy.cur);
}
ret = __cpufreq_set_policy(data, &policy);
mutex_unlock(&data->lock);
......
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