[PATCH v2 06/14] cpufreq: amd_pstate: fix wrong lowest perf fetch

From: Perry Yuan
Date: Sat Jul 09 2022 - 10:19:19 EST


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.

Signed-off-by: Perry Yuan <Perry.Yuan@xxxxxxx>
Signed-off-by: Su Jinzhou <jinzhou.su@xxxxxxx>
---
drivers/cpufreq/amd-pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index fc0de9fd643b..7c51f4125263 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -308,7 +308,7 @@ 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;
--
2.25.1