Commit Message
Greg KH
Oct. 22, 2022, 7:27 a.m. UTC
From: Perry Yuan <Perry.Yuan@amd.com> [ Upstream commit b185c5053c65b7704ead4537e4d4d9b33dc398dc ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 365f3ad166a7..d63a28c5f95a 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -322,7 +322,7 @@ 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;