51 	if (agp_fe.current_controller == NULL)  in agp_find_mem_by_key()
52 		return NULL;  in agp_find_mem_by_key()
56 	while (curr != NULL) {  in agp_find_mem_by_key()
74 	if (agp_find_mem_by_key(temp->key) != NULL) {  in agp_remove_from_pool()
78 		if (prev != NULL) {  in agp_remove_from_pool()
80 			if (next != NULL)  in agp_remove_from_pool()
85 			if (next != NULL)  in agp_remove_from_pool()
86 				next->prev = NULL;  in agp_remove_from_pool()
122 	return NULL;  in agp_find_seg_in_client()
129 	if (client->segments != NULL) {  in agp_remove_seg_from_client()
130 		if (*(client->segments) != NULL) {  in agp_remove_seg_from_client()
136 		client->segments = NULL;  in agp_remove_seg_from_client()
147 	if (prev_seg != NULL)  in agp_add_seg_to_client()
171 	if (seg == NULL) {  in agp_create_segment()
173 		region->seg_list = NULL;  in agp_create_segment()
184 	region->seg_list = NULL;  in agp_create_segment()
187 	if (ret_seg == NULL) {  in agp_create_segment()
205 	if (prev != NULL) {  in agp_insert_into_pool()
221 	while (curr != NULL) {  in agp_find_private()
227 	return NULL;  in agp_find_private()
236 	if (prev != NULL)  in agp_insert_file_private()
250 	if (prev != NULL) {  in agp_remove_file_private()
253 		if (next != NULL)  in agp_remove_file_private()
257 		if (next != NULL)  in agp_remove_file_private()
258 			next->prev = NULL;  in agp_remove_file_private()
281 	if (memory == NULL)  in agp_allocate_memory_wrap()
282 		return NULL;  in agp_allocate_memory_wrap()
299 	while (controller != NULL) {  in agp_find_controller_by_pid()
305 	return NULL;  in agp_find_controller_by_pid()
313 	if (controller == NULL)  in agp_create_controller()
314 		return NULL;  in agp_create_controller()
327 	if (prev_controller != NULL)  in agp_insert_controller()
349 		if (priv != NULL) {  in agp_remove_all_clients()
380 	if (prev_controller != NULL) {  in agp_remove_controller()
382 		if (next_controller != NULL)  in agp_remove_controller()
386 		if (next_controller != NULL)  in agp_remove_controller()
387 			next_controller->prev = NULL;  in agp_remove_controller()
396 		agp_fe.current_controller = NULL;  in agp_remove_controller()
410 	while (clients != NULL) {  in agp_controller_make_current()
415 		if (priv != NULL) {  in agp_controller_make_current()
433 	while (clients != NULL) {  in agp_controller_release_current()
438 		if (priv != NULL)  in agp_controller_release_current()
444 	agp_fe.current_controller = NULL;  in agp_controller_release_current()
459 	if (controller == NULL)  in agp_find_client_in_controller()
460 		return NULL;  in agp_find_client_in_controller()
464 	while (client != NULL) {  in agp_find_client_in_controller()
470 	return NULL;  in agp_find_client_in_controller()
479 	while (controller != NULL) {  in agp_find_controller_for_client()
480 		if ((agp_find_client_in_controller(controller, id)) != NULL)  in agp_find_controller_for_client()
485 	return NULL;  in agp_find_controller_for_client()
492 	if (agp_fe.current_controller == NULL)  in agp_find_client_by_pid()
493 		return NULL;  in agp_find_client_by_pid()
506 	if (prev_client != NULL)  in agp_insert_client()
518 	if (new_client == NULL)  in agp_create_client()
519 		return NULL;  in agp_create_client()
534 	if (controller == NULL)  in agp_remove_client()
538 	if (client == NULL)  in agp_remove_client()
544 	if (prev_client != NULL) {  in agp_remove_client()
546 		if (next_client != NULL)  in agp_remove_client()
550 		if (next_client != NULL)  in agp_remove_client()
551 			next_client->prev = NULL;  in agp_remove_client()
594 		if (client == NULL)  in agp_mmap()
656 		if (controller != NULL) {  in agp_release()
660 			controller = NULL;  in agp_release()
669 	file->private_data = NULL;  in agp_release()
686 	if (priv == NULL) {  in agp_open()
700 	if (client != NULL) {  in agp_open()
746 	if (agp_fe.current_controller != NULL)  in agpioc_acquire_wrap()
761 	if (controller != NULL) {  in agpioc_acquire_wrap()
766 		if (controller == NULL) {  in agpioc_acquire_wrap()
818 		if (client_priv != NULL) {  in agpioc_reserve_wrap()
822 		if (client == NULL) {  in agpioc_reserve_wrap()
836 		if (segment == NULL)  in agpioc_reserve_wrap()
846 		if (client == NULL) {  in agpioc_reserve_wrap()
850 			if (client == NULL) {  in agpioc_reserve_wrap()
856 			if (client_priv != NULL) {  in agpioc_reserve_wrap()
888 	if (memory == NULL)  in agpioc_allocate_wrap()
908 	if (memory == NULL)  in agpioc_deallocate_wrap()
926 	if (memory == NULL)  in agpioc_bind_wrap()
943 	if (memory == NULL)  in agpioc_unbind_wrap()
958 	if ((agp_fe.current_controller == NULL) &&  in agp_ioctl()