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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 

Pull hwmon subsystem fixes from Jean Delvare.

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (fam15h_power) Tweak runavg_range on resume
  hwmon: (coretemp) Use get_online_cpus to avoid races involving CPU hotplug
  hwmon: (via-cputemp) Use get_online_cpus to avoid races involving CPU hotplug
This commit is contained in:
Linus Torvalds 2012-09-23 14:50:15 -07:00
parent 0bf7a7056c 5f0ecb907d
commit 0737c8d7ae
3 changed files with 23 additions and 2 deletions
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5
drivers/hwmon/coretemp.c
View File

@ -815,17 +815,20 @@ static int __init coretemp_init(void)
if (err)
goto exit;
get_online_cpus();
for_each_online_cpu(i)
get_core_online(i);
#ifndef CONFIG_HOTPLUG_CPU
if (list_empty(&pdev_list)) {
put_online_cpus();
err = -ENODEV;
goto exit_driver_unreg;
}
#endif
register_hotcpu_notifier(&coretemp_cpu_notifier);
put_online_cpus();
return 0;
#ifndef CONFIG_HOTPLUG_CPU
@ -840,6 +843,7 @@ static void __exit coretemp_exit(void)
{
struct pdev_entry *p, *n;
get_online_cpus();
unregister_hotcpu_notifier(&coretemp_cpu_notifier);
mutex_lock(&pdev_list_mutex);
list_for_each_entry_safe(p, n, &pdev_list, list) {
@ -848,6 +852,7 @@ static void __exit coretemp_exit(void)
kfree(p);
}
mutex_unlock(&pdev_list_mutex);
put_online_cpus();
platform_driver_unregister(&coretemp_driver);
}

15
drivers/hwmon/fam15h_power.c
View File

@ -129,12 +129,12 @@ static bool __devinit fam15h_power_is_internal_node0(struct pci_dev *f4)
* counter saturations resulting in bogus power readings.
* We correct this value ourselves to cope with older BIOSes.
*/
static DEFINE_PCI_DEVICE_TABLE(affected_device) = {
static const struct pci_device_id affected_device[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) },
{ 0 }
};
static void __devinit tweak_runavg_range(struct pci_dev *pdev)
static void tweak_runavg_range(struct pci_dev *pdev)
{
u32 val;
@ -158,6 +158,16 @@ static void __devinit tweak_runavg_range(struct pci_dev *pdev)
REG_TDP_RUNNING_AVERAGE, val);
}
#ifdef CONFIG_PM
static int fam15h_power_resume(struct pci_dev *pdev)
{
tweak_runavg_range(pdev);
return 0;
}
#else
#define fam15h_power_resume NULL
#endif
static void __devinit fam15h_power_init_data(struct pci_dev *f4,
struct fam15h_power_data *data)
{
@ -256,6 +266,7 @@ static struct pci_driver fam15h_power_driver = {
.id_table = fam15h_power_id_table,
.probe = fam15h_power_probe,
.remove = __devexit_p(fam15h_power_remove),
.resume = fam15h_power_resume,
};
module_pci_driver(fam15h_power_driver);

5
drivers/hwmon/via-cputemp.c
View File

@ -328,6 +328,7 @@ static int __init via_cputemp_init(void)
if (err)
goto exit;
get_online_cpus();
for_each_online_cpu(i) {
struct cpuinfo_x86 *c = &cpu_data(i);
@ -347,12 +348,14 @@ static int __init via_cputemp_init(void)
#ifndef CONFIG_HOTPLUG_CPU
if (list_empty(&pdev_list)) {
put_online_cpus();
err = -ENODEV;
goto exit_driver_unreg;
}
#endif
register_hotcpu_notifier(&via_cputemp_cpu_notifier);
put_online_cpus();
return 0;
#ifndef CONFIG_HOTPLUG_CPU
@ -367,6 +370,7 @@ static void __exit via_cputemp_exit(void)
{
struct pdev_entry *p, *n;
get_online_cpus();
unregister_hotcpu_notifier(&via_cputemp_cpu_notifier);
mutex_lock(&pdev_list_mutex);
list_for_each_entry_safe(p, n, &pdev_list, list) {
@ -375,6 +379,7 @@ static void __exit via_cputemp_exit(void)
kfree(p);
}
mutex_unlock(&pdev_list_mutex);
put_online_cpus();
platform_driver_unregister(&via_cputemp_driver);
}