Merge branches 'pm-cpuidle', 'pm-opp' and 'pm-qos'

Merge cpuidle updates, OPP (operating performance points) updates and a
PM QoS update for 7.2-rc1:

 - Allow the intel_idle driver to avoid exposing C-states that are
   redundant when PC6 is disabled (Artem Bityutskiy)

 - Fix memory leak and a potential race in the OPP core (Abdun Nihaal,
   Di Shen)

 - Mark Rust OPP methods as inline (Nicolás Antinori)

 - Fix misc device registration failure path in the PM QoS core (Yuho
   Choi)

* pm-cpuidle:
  intel_idle: Drop C-states redundant when PC6 is disabled
  intel_idle: Introduce a helper for checking PC6
  intel_idle: Add constants for MSR_PKG_CST_CONFIG_CONTROL

* pm-opp:
  opp: rust: mark OPP methods as inline
  OPP: of: Fix potential memory leak in opp_parse_supplies()
  OPP: Fix race between OPP addition and lookup

* pm-qos:
  PM: QoS: Fix misc device registration unwind

kernel/power/qos.c

@@ -519,18 +519,23 @@ static int __init cpu_latency_qos_init(void)
 	int ret;
 
 	ret = misc_register(&cpu_latency_qos_miscdev);
-	if (ret < 0)
+	if (ret < 0) {
 		pr_err("%s: %s setup failed\n", __func__,
 		       cpu_latency_qos_miscdev.name);
+		return ret;
+	}
 
 #ifdef CONFIG_PM_QOS_CPU_SYSTEM_WAKEUP
 	ret = misc_register(&cpu_wakeup_latency_qos_miscdev);
-	if (ret < 0)
+	if (ret < 0) {
 		pr_err("%s: %s setup failed\n", __func__,
 		       cpu_wakeup_latency_qos_miscdev.name);
+		misc_deregister(&cpu_latency_qos_miscdev);
+		return ret;
+	}
 #endif
 
-	return ret;
+	return 0;
 }
 late_initcall(cpu_latency_qos_init);
 #endif /* CONFIG_CPU_IDLE */