---

yaml
---
r: 375706
b: refs/heads/master
c: 0a3b15a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d5a2fa27ecd772b51d93a91209205ec4d6ea2da1
+refs/heads/master: 0a3b15ac3cc3ddc791901e12bdc930b5fa11a30a

trunk/drivers/acpi/processor_driver.c

@@ -95,9 +95,6 @@ static const struct acpi_device_id processor_device_ids[] = {
 };
 MODULE_DEVICE_TABLE(acpi, processor_device_ids);
 
-static SIMPLE_DEV_PM_OPS(acpi_processor_pm,
-			 acpi_processor_suspend, acpi_processor_resume);
-
 static struct acpi_driver acpi_processor_driver = {
 	.name = "processor",
 	.class = ACPI_PROCESSOR_CLASS,
@@ -107,7 +104,6 @@ static struct acpi_driver acpi_processor_driver = {
 		.remove = acpi_processor_remove,
 		.notify = acpi_processor_notify,
 		},
-	.drv.pm = &acpi_processor_pm,
 };
 
 #define INSTALL_NOTIFY_HANDLER		1
@@ -934,6 +930,8 @@ static int __init acpi_processor_init(void)
 	if (result < 0)
 		return result;
 
+	acpi_processor_syscore_init();
+
 	acpi_processor_install_hotplug_notify();
 
 	acpi_thermal_cpufreq_init();
@@ -956,6 +954,8 @@ static void __exit acpi_processor_exit(void)
 
 	acpi_processor_uninstall_hotplug_notify();
 
+	acpi_processor_syscore_exit();
+
 	acpi_bus_unregister_driver(&acpi_processor_driver);
 
 	return;

trunk/drivers/acpi/processor_idle.c

@@ -34,6 +34,7 @@
 #include <linux/sched.h>       /* need_resched() */
 #include <linux/clockchips.h>
 #include <linux/cpuidle.h>
+#include <linux/syscore_ops.h>
 
 /*
  * Include the apic definitions for x86 to have the APIC timer related defines
@@ -210,33 +211,41 @@ static void lapic_timer_state_broadcast(struct acpi_processor *pr,
 
 #endif
 
+#ifdef CONFIG_PM_SLEEP
 static u32 saved_bm_rld;
 
-static void acpi_idle_bm_rld_save(void)
+int acpi_processor_suspend(void)
 {
 	acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
+	return 0;
 }
-static void acpi_idle_bm_rld_restore(void)
+
+void acpi_processor_resume(void)
 {
 	u32 resumed_bm_rld;
 
 	acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
+	if (resumed_bm_rld == saved_bm_rld)
+		return;
 
-	if (resumed_bm_rld != saved_bm_rld)
-		acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
+	acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
 }
 
-int acpi_processor_suspend(struct device *dev)
+static struct syscore_ops acpi_processor_syscore_ops = {
+	.suspend = acpi_processor_suspend,
+	.resume = acpi_processor_resume,
+};
+
+void acpi_processor_syscore_init(void)
 {
-	acpi_idle_bm_rld_save();
-	return 0;
+	register_syscore_ops(&acpi_processor_syscore_ops);
 }
 
-int acpi_processor_resume(struct device *dev)
+void acpi_processor_syscore_exit(void)
 {
-	acpi_idle_bm_rld_restore();
-	return 0;
+	unregister_syscore_ops(&acpi_processor_syscore_ops);
 }
+#endif /* CONFIG_PM_SLEEP */
 
 #if defined(CONFIG_X86)
 static void tsc_check_state(int state)

trunk/drivers/cpufreq/Kconfig

@@ -47,7 +47,7 @@ config CPU_FREQ_STAT_DETAILS
 
 choice
 	prompt "Default CPUFreq governor"
-	default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
+	default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110
 	default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
 	help
 	  This option sets which CPUFreq governor shall be loaded at

trunk/drivers/cpufreq/Kconfig.arm

@@ -3,17 +3,16 @@
 #
 
 config ARM_BIG_LITTLE_CPUFREQ
-	tristate "Generic ARM big LITTLE CPUfreq driver"
-	depends on ARM_CPU_TOPOLOGY && PM_OPP && HAVE_CLK
-	help
-	  This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
+	tristate
+	depends on ARM_CPU_TOPOLOGY
 
 config ARM_DT_BL_CPUFREQ
-	tristate "Generic probing via DT for ARM big LITTLE CPUfreq driver"
-	depends on ARM_BIG_LITTLE_CPUFREQ && OF
+	tristate "Generic ARM big LITTLE CPUfreq driver probed via DT"
+	select ARM_BIG_LITTLE_CPUFREQ
+	depends on OF && HAVE_CLK
 	help
-	  This enables probing via DT for Generic CPUfreq driver for ARM
-	  big.LITTLE platform. This gets frequency tables from DT.
+	  This enables the Generic CPUfreq driver for ARM big.LITTLE platform.
+	  This gets frequency tables from DT.
 
 config ARM_EXYNOS_CPUFREQ
 	bool "SAMSUNG EXYNOS SoCs"

trunk/drivers/cpufreq/arm_big_little.c

@@ -40,6 +40,11 @@ static struct clk *clk[MAX_CLUSTERS];
 static struct cpufreq_frequency_table *freq_table[MAX_CLUSTERS];
 static atomic_t cluster_usage[MAX_CLUSTERS] = {ATOMIC_INIT(0), ATOMIC_INIT(0)};
 
+static int cpu_to_cluster(int cpu)
+{
+	return topology_physical_package_id(cpu);
+}
+
 static unsigned int bL_cpufreq_get(unsigned int cpu)
 {
 	u32 cur_cluster = cpu_to_cluster(cpu);
@@ -187,7 +192,7 @@ static int bL_cpufreq_init(struct cpufreq_policy *policy)
 
 	cpumask_copy(policy->cpus, topology_core_cpumask(policy->cpu));
 
-	dev_info(cpu_dev, "%s: CPU %d initialized\n", __func__, policy->cpu);
+	dev_info(cpu_dev, "CPU %d initialized\n", policy->cpu);
 	return 0;
 }
 

trunk/drivers/cpufreq/arm_big_little.h

@@ -34,11 +34,6 @@ struct cpufreq_arm_bL_ops {
 	int (*init_opp_table)(struct device *cpu_dev);
 };
 
-static inline int cpu_to_cluster(int cpu)
-{
-	return topology_physical_package_id(cpu);
-}
-
 int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops);
 void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops);
 

trunk/drivers/cpufreq/arm_big_little_dt.c

@@ -66,8 +66,8 @@ static int dt_get_transition_latency(struct device *cpu_dev)
 
 	parent = of_find_node_by_path("/cpus");
 	if (!parent) {
-		pr_info("Failed to find OF /cpus. Use CPUFREQ_ETERNAL transition latency\n");
-		return CPUFREQ_ETERNAL;
+		pr_err("failed to find OF /cpus\n");
+		return -ENOENT;
 	}
 
 	for_each_child_of_node(parent, np) {
@@ -78,11 +78,10 @@ static int dt_get_transition_latency(struct device *cpu_dev)
 		of_node_put(np);
 		of_node_put(parent);
 
-		return transition_latency;
+		return 0;
 	}
 
-	pr_info("clock-latency isn't found, use CPUFREQ_ETERNAL transition latency\n");
-	return CPUFREQ_ETERNAL;
+	return -ENODEV;
 }
 
 static struct cpufreq_arm_bL_ops dt_bL_ops = {

trunk/drivers/cpufreq/cpufreq-cpu0.c

@@ -189,36 +189,25 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
 
 	if (!np) {
 		pr_err("failed to find cpu0 node\n");
-		ret = -ENOENT;
-		goto out_put_parent;
+		return -ENOENT;
 	}
 
 	cpu_dev = &pdev->dev;
 	cpu_dev->of_node = np;
 
-	cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
-	if (IS_ERR(cpu_reg)) {
-		/*
-		 * If cpu0 regulator supply node is present, but regulator is
-		 * not yet registered, we should try defering probe.
-		 */
-		if (PTR_ERR(cpu_reg) == -EPROBE_DEFER) {
-			dev_err(cpu_dev, "cpu0 regulator not ready, retry\n");
-			ret = -EPROBE_DEFER;
-			goto out_put_node;
-		}
-		pr_warn("failed to get cpu0 regulator: %ld\n",
-			PTR_ERR(cpu_reg));
-		cpu_reg = NULL;
-	}
-
 	cpu_clk = devm_clk_get(cpu_dev, NULL);
 	if (IS_ERR(cpu_clk)) {
 		ret = PTR_ERR(cpu_clk);
 		pr_err("failed to get cpu0 clock: %d\n", ret);
 		goto out_put_node;
 	}
 
+	cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
+	if (IS_ERR(cpu_reg)) {
+		pr_warn("failed to get cpu0 regulator\n");
+		cpu_reg = NULL;
+	}
+
 	ret = of_init_opp_table(cpu_dev);
 	if (ret) {
 		pr_err("failed to init OPP table: %d\n", ret);
@@ -275,8 +264,6 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
 	opp_free_cpufreq_table(cpu_dev, &freq_table);
 out_put_node:
 	of_node_put(np);
-out_put_parent:
-	of_node_put(parent);
 	return ret;
 }
 

trunk/drivers/cpufreq/cpufreq.c

@@ -1075,14 +1075,14 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
 				__func__, cpu_dev->id, cpu);
 	}
 
-	if ((cpus == 1) && (cpufreq_driver->target))
-		__cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
-
 	pr_debug("%s: removing link, cpu: %d\n", __func__, cpu);
 	cpufreq_cpu_put(data);
 
 	/* If cpu is last user of policy, free policy */
 	if (cpus == 1) {
+		if (cpufreq_driver->target)
+			__cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT);
+
 		lock_policy_rwsem_read(cpu);
 		kobj = &data->kobj;
 		cmp = &data->kobj_unregister;

trunk/drivers/cpufreq/cpufreq_governor.c

@@ -255,7 +255,6 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		if (have_governor_per_policy()) {
 			WARN_ON(dbs_data);
 		} else if (dbs_data) {
-			dbs_data->usage_count++;
 			policy->governor_data = dbs_data;
 			return 0;
 		}
@@ -267,7 +266,6 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		}
 
 		dbs_data->cdata = cdata;
-		dbs_data->usage_count = 1;
 		rc = cdata->init(dbs_data);
 		if (rc) {
 			pr_err("%s: POLICY_INIT: init() failed\n", __func__);
@@ -296,8 +294,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 		set_sampling_rate(dbs_data, max(dbs_data->min_sampling_rate,
 					latency * LATENCY_MULTIPLIER));
 
-		if ((cdata->governor == GOV_CONSERVATIVE) &&
-				(!policy->governor->initialized)) {
+		if (dbs_data->cdata->governor == GOV_CONSERVATIVE) {
 			struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
 
 			cpufreq_register_notifier(cs_ops->notifier_block,
@@ -309,12 +306,12 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 		return 0;
 	case CPUFREQ_GOV_POLICY_EXIT:
-		if (!--dbs_data->usage_count) {
+		if ((policy->governor->initialized == 1) ||
+				have_governor_per_policy()) {
 			sysfs_remove_group(get_governor_parent_kobj(policy),
 					get_sysfs_attr(dbs_data));
 
-			if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
-				(policy->governor->initialized == 1)) {
+			if (dbs_data->cdata->governor == GOV_CONSERVATIVE) {
 				struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
 
 				cpufreq_unregister_notifier(cs_ops->notifier_block,

trunk/drivers/cpufreq/cpufreq_governor.h

@@ -211,7 +211,6 @@ struct common_dbs_data {
 struct dbs_data {
 	struct common_dbs_data *cdata;
 	unsigned int min_sampling_rate;
-	int usage_count;
 	void *tuners;
 
 	/* dbs_mutex protects dbs_enable in governor start/stop */

trunk/drivers/cpufreq/cpufreq_ondemand.c

@@ -547,6 +547,7 @@ static int od_init(struct dbs_data *dbs_data)
 	tuners->io_is_busy = should_io_be_busy();
 
 	dbs_data->tuners = tuners;
+	pr_info("%s: tuners %p\n", __func__, tuners);
 	mutex_init(&dbs_data->mutex);
 	return 0;
 }