diff options
Diffstat (limited to 'drivers/hwmon/hwmon.c')
| -rw-r--r-- | drivers/hwmon/hwmon.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index a61e7815a2a..b3c62f84b0b 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -21,6 +21,7 @@ #include <linux/gfp.h> #include <linux/spinlock.h> #include <linux/pci.h> +#include <linux/notifier.h> #define HWMON_ID_PREFIX "hwmon" #define HWMON_ID_FORMAT HWMON_ID_PREFIX "%d" @@ -29,7 +30,7 @@ static struct class *hwmon_class; static DEFINE_IDR(hwmon_idr); static DEFINE_SPINLOCK(idr_lock); - +static BLOCKING_NOTIFIER_HEAD(hwmon_notifier_list); /** * hwmon_device_register - register w/ hwmon * @dev: the device to register @@ -89,6 +90,24 @@ void hwmon_device_unregister(struct device *dev) "hwmon_device_unregister() failed: bad class ID!\n"); } +int hwmon_notifier_register(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&hwmon_notifier_list, nb); +} +EXPORT_SYMBOL(hwmon_notifier_register); + +int hwmon_notifier_unregister(struct notifier_block *nb) +{ + return blocking_notifier_chain_unregister(&hwmon_notifier_list, nb); +} +EXPORT_SYMBOL(hwmon_notifier_unregister); + +void hwmon_notify(unsigned long val, void *v) +{ + blocking_notifier_call_chain(&hwmon_notifier_list, val, v); +} +EXPORT_SYMBOL(hwmon_notify); + static void __init hwmon_pci_quirks(void) { #if defined CONFIG_X86 && defined CONFIG_PCI |