cpufreq: amd_pstate: fix wrong lowest perf fetch

Fix the wrong lowest perf value reading which is used for new
des_perf calculation by governor requested, the incorrect min_perf will
get incorrect des_perf to be set , that will cause the system frequency
changing unexpectedly.

Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Su Jinzhou <jinzhou.su@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index ec02929..a47a1a2 100644 (file)
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -312,7 +312,7 @@ static int amd_pstate_target(struct cpufreq_policy *policy,
                return -ENODEV;
 
        cap_perf = READ_ONCE(cpudata->highest_perf);
-       min_perf = READ_ONCE(cpudata->lowest_nonlinear_perf);
+       min_perf = READ_ONCE(cpudata->lowest_perf);
        max_perf = cap_perf;
 
        freqs.old = policy->cur;