diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-03 23:43:17 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-05 16:41:26 (GMT) |
| commit | e525506fcb67a9bbd94f01eac84af802139004eb (patch) | |
| tree | 505ec664227aa70fc7fa3a7f21bcfe45983ca979 /drivers/acpi/scan.c | |
| parent | 78ea4639a7647f2fcc957c3a532bde49df9895c7 (diff) | |
| download | linux-e525506fcb67a9bbd94f01eac84af802139004eb.tar.xz | |
ACPI / hotplug / PCI: Define hotplug context lock in the core
Subsequent changes will require the ACPI core to acquire the lock
protecting the ACPIPHP hotplug contexts, so move the definition of
the lock to the core and change its name to be more generic.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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 59eba29..d64a582 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) |