192 	struct apm_user *as;  in queue_event()  local
195 	list_for_each_entry(as, &apm_user_list, list) {  in queue_event()
196 		if (as->reader)  in queue_event()
197 			queue_add_event(&as->queue, event);  in queue_event()
205 	struct apm_user *as = fp->private_data;  in apm_read()  local
212 	if (queue_empty(&as->queue) && fp->f_flags & O_NONBLOCK)  in apm_read()
215 	wait_event_interruptible(apm_waitqueue, !queue_empty(&as->queue));  in apm_read()
217 	while ((i >= sizeof(event)) && !queue_empty(&as->queue)) {  in apm_read()
218 		event = queue_get_event(&as->queue);  in apm_read()
225 		if (as->suspend_state == SUSPEND_PENDING &&  in apm_read()
227 			as->suspend_state = SUSPEND_READ;  in apm_read()
242 	struct apm_user *as = fp->private_data;  in apm_poll()  local
245 	return queue_empty(&as->queue) ? 0 : EPOLLIN | EPOLLRDNORM;  in apm_poll()
261 	struct apm_user *as = filp->private_data;  in apm_ioctl()  local
264 	if (!as->suser || !as->writer)  in apm_ioctl()
271 		as->suspend_result = -EINTR;  in apm_ioctl()
273 		switch (as->suspend_state) {  in apm_ioctl()
280 			as->suspend_state = SUSPEND_ACKED;  in apm_ioctl()
298 					as->suspend_state != SUSPEND_ACKED))  in apm_ioctl()
302 			as->suspend_result = -ETIMEDOUT;  in apm_ioctl()
306 			as->suspend_state = SUSPEND_WAIT;  in apm_ioctl()
314 			as->suspend_result = pm_suspend(PM_SUSPEND_MEM);  in apm_ioctl()
318 		err = as->suspend_result;  in apm_ioctl()
319 		as->suspend_state = SUSPEND_NONE;  in apm_ioctl()
329 	struct apm_user *as = filp->private_data;  in apm_release()  local
334 	list_del(&as->list);  in apm_release()
342 	if (as->suspend_state == SUSPEND_PENDING ||  in apm_release()
343 	    as->suspend_state == SUSPEND_READ)  in apm_release()
349 	kfree(as);  in apm_release()
355 	struct apm_user *as;  in apm_open()  local
357 	as = kzalloc(sizeof(*as), GFP_KERNEL);  in apm_open()
358 	if (as) {  in apm_open()
366 		as->suser = capable(CAP_SYS_ADMIN);  in apm_open()
367 		as->writer = (filp->f_mode & FMODE_WRITE) == FMODE_WRITE;  in apm_open()
368 		as->reader = (filp->f_mode & FMODE_READ) == FMODE_READ;  in apm_open()
371 		list_add(&as->list, &apm_user_list);  in apm_open()
374 		filp->private_data = as;  in apm_open()
377 	return as ? 0 : -ENOMEM;  in apm_open()
513 	struct apm_user *as;  in apm_suspend_notifier()  local
533 		list_for_each_entry(as, &apm_user_list, list) {  in apm_suspend_notifier()
534 			if (as->suspend_state != SUSPEND_WAIT && as->reader &&  in apm_suspend_notifier()
535 			    as->writer && as->suser) {  in apm_suspend_notifier()
536 				as->suspend_state = SUSPEND_PENDING;  in apm_suspend_notifier()
538 				queue_add_event(&as->queue, apm_event);  in apm_suspend_notifier()
570 			list_for_each_entry(as, &apm_user_list, list) {  in apm_suspend_notifier()
571 				if (as->suspend_state == SUSPEND_PENDING ||  in apm_suspend_notifier()
572 				    as->suspend_state == SUSPEND_READ) {  in apm_suspend_notifier()
573 					as->suspend_state = SUSPEND_ACKTO;  in apm_suspend_notifier()
603 		list_for_each_entry(as, &apm_user_list, list) {  in apm_suspend_notifier()
604 			if (as->suspend_state == SUSPEND_ACKED) {  in apm_suspend_notifier()
611 				as->suspend_result = 0;  in apm_suspend_notifier()
612 				as->suspend_state = SUSPEND_DONE;  in apm_suspend_notifier()