62 acpi_status acpi_ut_create_rw_lock(struct acpi_rw_lock *lock)  in acpi_ut_create_rw_lock()  argument
66 	lock->num_readers = 0;  in acpi_ut_create_rw_lock()
67 	status = acpi_os_create_mutex(&lock->reader_mutex);  in acpi_ut_create_rw_lock()
72 	status = acpi_os_create_mutex(&lock->writer_mutex);  in acpi_ut_create_rw_lock()
76 void acpi_ut_delete_rw_lock(struct acpi_rw_lock *lock)  in acpi_ut_delete_rw_lock()  argument
79 	acpi_os_delete_mutex(lock->reader_mutex);  in acpi_ut_delete_rw_lock()
80 	acpi_os_delete_mutex(lock->writer_mutex);  in acpi_ut_delete_rw_lock()
82 	lock->num_readers = 0;  in acpi_ut_delete_rw_lock()
83 	lock->reader_mutex = NULL;  in acpi_ut_delete_rw_lock()
84 	lock->writer_mutex = NULL;  in acpi_ut_delete_rw_lock()
105 acpi_status acpi_ut_acquire_read_lock(struct acpi_rw_lock *lock)  in acpi_ut_acquire_read_lock()  argument
109 	status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_acquire_read_lock()
116 	lock->num_readers++;  in acpi_ut_acquire_read_lock()
117 	if (lock->num_readers == 1) {  in acpi_ut_acquire_read_lock()
119 		    acpi_os_acquire_mutex(lock->writer_mutex,  in acpi_ut_acquire_read_lock()
123 	acpi_os_release_mutex(lock->reader_mutex);  in acpi_ut_acquire_read_lock()
127 acpi_status acpi_ut_release_read_lock(struct acpi_rw_lock *lock)  in acpi_ut_release_read_lock()  argument
131 	status = acpi_os_acquire_mutex(lock->reader_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_release_read_lock()
138 	lock->num_readers--;  in acpi_ut_release_read_lock()
139 	if (lock->num_readers == 0) {  in acpi_ut_release_read_lock()
140 		acpi_os_release_mutex(lock->writer_mutex);  in acpi_ut_release_read_lock()
143 	acpi_os_release_mutex(lock->reader_mutex);  in acpi_ut_release_read_lock()
163 acpi_status acpi_ut_acquire_write_lock(struct acpi_rw_lock *lock)  in acpi_ut_acquire_write_lock()  argument
167 	status = acpi_os_acquire_mutex(lock->writer_mutex, ACPI_WAIT_FOREVER);  in acpi_ut_acquire_write_lock()
171 void acpi_ut_release_write_lock(struct acpi_rw_lock *lock)  in acpi_ut_release_write_lock()  argument
174 	acpi_os_release_mutex(lock->writer_mutex);  in acpi_ut_release_write_lock()