1241 	struct semaphore *sem = NULL;  in acpi_os_create_semaphore()  local
1243 	sem = acpi_os_allocate_zeroed(sizeof(struct semaphore));  in acpi_os_create_semaphore()
1244 	if (!sem)  in acpi_os_create_semaphore()
1247 	sema_init(sem, initial_units);  in acpi_os_create_semaphore()
1249 	*handle = (acpi_handle *) sem;  in acpi_os_create_semaphore()
1266 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_delete_semaphore()  local
1268 	if (!sem)  in acpi_os_delete_semaphore()
1273 	BUG_ON(!list_empty(&sem->wait_list));  in acpi_os_delete_semaphore()
1274 	kfree(sem);  in acpi_os_delete_semaphore()
1275 	sem = NULL;  in acpi_os_delete_semaphore()
1286 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_wait_semaphore()  local
1293 	if (!sem || (units < 1))  in acpi_os_wait_semaphore()
1307 	ret = down_timeout(sem, jiffies);  in acpi_os_wait_semaphore()
1330 	struct semaphore *sem = (struct semaphore *)handle;  in acpi_os_signal_semaphore()  local
1335 	if (!sem || (units < 1))  in acpi_os_signal_semaphore()
1344 	up(sem);  in acpi_os_signal_semaphore()