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Commit ebff7c92 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] p4-clockmod: print EST-capable warning message only once
  [CPUFREQ] fix BUG on cpufreq policy init failure
  [CPUFREQ] Fix another notifier leak in powernow-k8.
  [CPUFREQ] Missing "unregister_cpu_notifier" in powernow-k8.c
parents 8a304e5d 853cee26

arch/x86/kernel/cpu/cpufreq/p4-clockmod.c

+3 −3
Original line number Diff line number Diff line
@@ -158,9 +158,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c) 
{

	if (c->x86 == 0x06) {

		if (cpu_has(c, X86_FEATURE_EST))

			printk(KERN_WARNING PFX "Warning: EST-capable CPU "

			       "detected. The acpi-cpufreq module offers "

			       "voltage scaling in addition of frequency "

			printk_once(KERN_WARNING PFX "Warning: EST-capable "

			       "CPU detected. The acpi-cpufreq module offers "

			       "voltage scaling in addition to frequency "

			       "scaling. You should use that instead of "

			       "p4-clockmod, if possible.\n");

		switch (c->x86_model) {

arch/x86/kernel/cpu/cpufreq/powernow-k8.c

+10 −3
Original line number Diff line number Diff line
@@ -1537,6 +1537,7 @@ static struct notifier_block cpb_nb = { 
static int __cpuinit powernowk8_init(void)

{

	unsigned int i, supported_cpus = 0, cpu;

	int rv;



	for_each_online_cpu(i) {

		int rc;
@@ -1555,14 +1556,14 @@ static int __cpuinit powernowk8_init(void) 


		cpb_capable = true;



		register_cpu_notifier(&cpb_nb);



		msrs = msrs_alloc();

		if (!msrs) {

			printk(KERN_ERR "%s: Error allocating msrs!\n", __func__);

			return -ENOMEM;

		}



		register_cpu_notifier(&cpb_nb);



		rdmsr_on_cpus(cpu_online_mask, MSR_K7_HWCR, msrs);



		for_each_cpu(cpu, cpu_online_mask) {
@@ -1574,7 +1575,13 @@ static int __cpuinit powernowk8_init(void) 
			(cpb_enabled ? "on" : "off"));

	}



	return cpufreq_register_driver(&cpufreq_amd64_driver);

	rv = cpufreq_register_driver(&cpufreq_amd64_driver);

	if (rv < 0 && boot_cpu_has(X86_FEATURE_CPB)) {

		unregister_cpu_notifier(&cpb_nb);

		msrs_free(msrs);

		msrs = NULL;

	}

	return rv;

}



/* driver entry point for term */

drivers/cpufreq/cpufreq.c

+15 −12
Original line number Diff line number Diff line
@@ -1919,8 +1919,10 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) 


	ret = sysdev_driver_register(&cpu_sysdev_class,

					&cpufreq_sysdev_driver);

	if (ret)

		goto err_null_driver;



	if ((!ret) && !(cpufreq_driver->flags & CPUFREQ_STICKY)) {

	if (!(cpufreq_driver->flags & CPUFREQ_STICKY)) {

		int i;

		ret = -ENODEV;
@@ -1935,21 +1937,22 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data) 
		if (ret) {

			dprintk("no CPU initialized for driver %s\n",

							driver_data->name);

			sysdev_driver_unregister(&cpu_sysdev_class,

						&cpufreq_sysdev_driver);



			spin_lock_irqsave(&cpufreq_driver_lock, flags);

			cpufreq_driver = NULL;

			spin_unlock_irqrestore(&cpufreq_driver_lock, flags);

			goto err_sysdev_unreg;

		}

	}



	if (!ret) {

	register_hotcpu_notifier(&cpufreq_cpu_notifier);

	dprintk("driver %s up and running\n", driver_data->name);

	cpufreq_debug_enable_ratelimit();

	}



	return 0;

err_sysdev_unreg:

	sysdev_driver_unregister(&cpu_sysdev_class,

			&cpufreq_sysdev_driver);

err_null_driver:

	spin_lock_irqsave(&cpufreq_driver_lock, flags);

	cpufreq_driver = NULL;

	spin_unlock_irqrestore(&cpufreq_driver_lock, flags);

	return ret;

}

EXPORT_SYMBOL_GPL(cpufreq_register_driver);