cpufreq: intel_pstate: Use CPUFREQ_POLICY_UNKNOWN

JIRA: https://issues.redhat.com/browse/RHEL-78189

commit de51589
Author: Christian Loehle <christian.loehle@arm.com>
Date:   Wed Dec 11 12:26:05 2024 +0000

    cpufreq: intel_pstate: Use CPUFREQ_POLICY_UNKNOWN

    epp_policy uses the same values as cpufreq_policy.policy and resets
    to CPUFREQ_POLICY_UNKNOWN during offlining. Be consistent about
    it and initialize to CPUFREQ_POLICY_UNKNOWN instead of 0, too.

    No functional change intended.

    Signed-off-by: Christian Loehle <christian.loehle@arm.com>
    Link: https://patch.msgid.link/20241211122605.3048503-3-christian.loehle@arm.com
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/cpufreq/intel_pstate.c

@@ -2713,7 +2713,7 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
 	}
 
 	cpu->epp_powersave = -EINVAL;
-	cpu->epp_policy = 0;
+	cpu->epp_policy = CPUFREQ_POLICY_UNKNOWN;
 
 	intel_pstate_get_cpu_pstates(cpu);