28 acpi_status acpi_ut_create_rw_lock(struct acpi_rw_lock *lock)  in acpi_ut_create_rw_lock()  argument
32 	lock->num_readers = 0;  in acpi_ut_create_rw_lock()
33 	status = acpi_os_create_mutex(&lock->reader_mutex);  in acpi_ut_create_rw_lock()
38 	status = acpi_os_create_mutex(&lock->writer_mutex);  in acpi_ut_create_rw_lock()
42 void acpi_ut_delete_rw_lock(struct acpi_rw_lock *lock)  in acpi_ut_delete_rw_lock()  argument
45 	acpi_os_delete_mutex(lock->reader_mutex);  in acpi_ut_delete_rw_lock()
46 	acpi_os_delete_mutex(lock->writer_mutex);  in acpi_ut_delete_rw_lock()
48 	lock->num_readers = 0;  in acpi_ut_delete_rw_lock()
49 	lock->reader_mutex = NULL;  in acpi_ut_delete_rw_lock()
50 	lock->writer_mutex = NULL;  in acpi_ut_delete_rw_lock()
71 acpi_status acpi_ut_acquire_read_lock(struct acpi_rw_lock *lock)  in acpi_ut_acquire_read_lock()  argument
75 	status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_acquire_read_lock()
82 	lock->num_readers++;  in acpi_ut_acquire_read_lock()
83 	if (lock->num_readers == 1) {  in acpi_ut_acquire_read_lock()
85 		    acpi_os_acquire_mutex(lock->writer_mutex,  in acpi_ut_acquire_read_lock()
89 	acpi_os_release_mutex(lock->reader_mutex);  in acpi_ut_acquire_read_lock()
93 acpi_status acpi_ut_release_read_lock(struct acpi_rw_lock *lock)  in acpi_ut_release_read_lock()  argument
97 	status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_release_read_lock()
104 	lock->num_readers--;  in acpi_ut_release_read_lock()
105 	if (lock->num_readers == 0) {  in acpi_ut_release_read_lock()
106 		acpi_os_release_mutex(lock->writer_mutex);  in acpi_ut_release_read_lock()
109 	acpi_os_release_mutex(lock->reader_mutex);  in acpi_ut_release_read_lock()
129 acpi_status acpi_ut_acquire_write_lock(struct acpi_rw_lock *lock)  in acpi_ut_acquire_write_lock()  argument
133 	status = acpi_os_acquire_mutex(lock->writer_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_acquire_write_lock()
137 void acpi_ut_release_write_lock(struct acpi_rw_lock *lock)  in acpi_ut_release_write_lock()  argument
140 	acpi_os_release_mutex(lock->writer_mutex);  in acpi_ut_release_write_lock()