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cpufreq: intel_pstate: Fix cpu->pstate.turbo_freq initialization

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Fix a problem in active mode that cpu->pstate.turbo_freq is initialized
only if HWP-to-frequency scaling factor is refined.

In passive mode, this problem is not exposed, because
cpu->pstate.turbo_freq is set again, later in
intel_cpufreq_cpu_init()->intel_pstate_get_hwp_cap().

Fixes: eb3693f052 ("cpufreq: intel_pstate: hybrid: CPU-specific scaling factor")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui 2021-10-26 16:32:42 +08:00 committed by Rafael J. Wysocki
parent 3598b30bd9
commit c72bcf0ab8
1 changed files with 2 additions and 1 deletions
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3
drivers/cpufreq/intel_pstate.c
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@ -540,7 +540,8 @@ static void intel_pstate_hybrid_hwp_adjust(struct cpudata *cpu)
* scaling factor is too high, so recompute it to make the HWP_CAP
* highest performance correspond to the maximum turbo frequency.
*/
if (turbo_freq < cpu->pstate.turbo_pstate * scaling) {
cpu->pstate.turbo_freq = cpu->pstate.turbo_pstate * scaling;
if (turbo_freq < cpu->pstate.turbo_freq) {
cpu->pstate.turbo_freq = turbo_freq;
scaling = DIV_ROUND_UP(turbo_freq, cpu->pstate.turbo_pstate);
cpu->pstate.scaling = scaling;