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    Subject[PATCH 6.0 666/862] cpufreq: amd_pstate: fix wrong lowest perf fetch
    Date
    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;
    --
    2.35.1


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