diff options
Diffstat (limited to 'drivers/acpi/scan.c')
| -rw-r--r-- | drivers/acpi/scan.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 59eba29a6066..d64a5826ef35 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -41,6 +41,7 @@ static DEFINE_MUTEX(acpi_scan_lock); static LIST_HEAD(acpi_scan_handlers_list); DEFINE_MUTEX(acpi_device_lock); LIST_HEAD(acpi_wakeup_device_list); +static DEFINE_MUTEX(acpi_hp_context_lock); struct acpi_device_bus_id{ char bus_id[15]; @@ -60,6 +61,16 @@ void acpi_scan_lock_release(void) } EXPORT_SYMBOL_GPL(acpi_scan_lock_release); +void acpi_lock_hp_context(void) +{ + mutex_lock(&acpi_hp_context_lock); +} + +void acpi_unlock_hp_context(void) +{ + mutex_unlock(&acpi_hp_context_lock); +} + int acpi_scan_add_handler(struct acpi_scan_handler *handler) { if (!handler || !handler->attach) |