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authorZhang Rui <rui.zhang@intel.com>2021-10-26 16:32:42 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-10-26 16:00:50 +0200
commitc72bcf0ab87a92634e58af62e89af0f40dfd0b88 (patch)
tree33e79614df6be591885fe39c07d6fd3885bee668 /drivers/cpufreq
parent3598b30bd970bbc09dba0cf31aa0a04105f37207 (diff)
downloadlinux-next-c72bcf0ab87a92634e58af62e89af0f40dfd0b88.tar.gz
cpufreq: intel_pstate: Fix cpu->pstate.turbo_freq initialization
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: eb3693f0521e ("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>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/intel_pstate.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index facc56dd58dd..349ddbaef796 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -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;