57 	struct ssam_cdev *cdev;  member
76 static struct ssam_cdev *ssam_cdev_get(struct ssam_cdev *cdev)  in ssam_cdev_get()  argument
78 	if (cdev)  in ssam_cdev_get()
79 		kref_get(&cdev->kref);  in ssam_cdev_get()
81 	return cdev;  in ssam_cdev_get()
84 static void ssam_cdev_put(struct ssam_cdev *cdev)  in ssam_cdev_put()  argument
86 	if (cdev)  in ssam_cdev_put()
87 		kref_put(&cdev->kref, __ssam_cdev_release);  in ssam_cdev_put()
111 		dev_warn(client->cdev->dev,  in ssam_cdev_notifier()
142 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_notifier_register()
177 	status = ssam_notifier_register(client->cdev->ctrl, &nf->nf);  in ssam_cdev_notifier_register()
193 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_notifier_unregister()
208 	status = ssam_notifier_unregister(client->cdev->ctrl, &client->notifier[event]->nf);  in ssam_cdev_notifier_unregister()
220 	down_read(&client->cdev->lock);  in ssam_cdev_notifier_unregister_all()
226 	if (client->cdev->ctrl) {  in ssam_cdev_notifier_unregister_all()
249 	up_read(&client->cdev->lock);  in ssam_cdev_notifier_unregister_all()
264 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_request()
345 	status = ssam_request_sync(client->cdev->ctrl, &spec, &rsp);  in ssam_cdev_request()
376 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_notif_register()
391 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_notif_unregister()
408 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_event_enable()
425 	return ssam_controller_event_enable(client->cdev->ctrl, reg, id, desc.flags);  in ssam_cdev_event_enable()
436 	lockdep_assert_held_read(&client->cdev->lock);  in ssam_cdev_event_disable()
453 	return ssam_controller_event_disable(client->cdev->ctrl, reg, id, desc.flags);  in ssam_cdev_event_disable()
463 	struct ssam_cdev *cdev = container_of(mdev, struct ssam_cdev, mdev);  in ssam_cdev_device_open()  local
470 	client->cdev = ssam_cdev_get(cdev);  in ssam_cdev_device_open()
484 	down_write(&cdev->client_lock);  in ssam_cdev_device_open()
486 	if (test_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &cdev->flags)) {  in ssam_cdev_device_open()
487 		up_write(&cdev->client_lock);  in ssam_cdev_device_open()
491 		ssam_cdev_put(client->cdev);  in ssam_cdev_device_open()
495 	list_add_tail(&client->node, &cdev->client_list);  in ssam_cdev_device_open()
497 	up_write(&cdev->client_lock);  in ssam_cdev_device_open()
511 	down_write(&client->cdev->client_lock);  in ssam_cdev_device_release()
513 	up_write(&client->cdev->client_lock);  in ssam_cdev_device_release()
521 	ssam_cdev_put(client->cdev);  in ssam_cdev_device_release()
530 	lockdep_assert_held_read(&client->cdev->lock);  in __ssam_cdev_device_ioctl()
561 	if (down_read_killable(&client->cdev->lock))  in ssam_cdev_device_ioctl()
564 	if (test_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &client->cdev->flags)) {  in ssam_cdev_device_ioctl()
565 		up_read(&client->cdev->lock);  in ssam_cdev_device_ioctl()
571 	up_read(&client->cdev->lock);  in ssam_cdev_device_ioctl()
578 	struct ssam_cdev *cdev = client->cdev;  in ssam_cdev_read()  local
582 	if (down_read_killable(&cdev->lock))  in ssam_cdev_read()
586 	if (test_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &cdev->flags)) {  in ssam_cdev_read()
587 		up_read(&cdev->lock);  in ssam_cdev_read()
594 			up_read(&cdev->lock);  in ssam_cdev_read()
602 								   &cdev->flags));  in ssam_cdev_read()
606 			if (down_read_killable(&cdev->lock))  in ssam_cdev_read()
610 			if (test_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &cdev->flags)) {  in ssam_cdev_read()
611 				up_read(&cdev->lock);  in ssam_cdev_read()
618 			up_read(&cdev->lock);  in ssam_cdev_read()
626 			up_read(&cdev->lock);  in ssam_cdev_read()
632 			up_read(&cdev->lock);  in ssam_cdev_read()
637 	up_read(&cdev->lock);  in ssam_cdev_read()
646 	if (test_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &client->cdev->flags))  in ssam_cdev_poll()
682 	struct ssam_cdev *cdev;  in ssam_dbg_device_probe()  local
689 	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);  in ssam_dbg_device_probe()
690 	if (!cdev)  in ssam_dbg_device_probe()
693 	kref_init(&cdev->kref);  in ssam_dbg_device_probe()
694 	init_rwsem(&cdev->lock);  in ssam_dbg_device_probe()
695 	cdev->ctrl = ctrl;  in ssam_dbg_device_probe()
696 	cdev->dev = &pdev->dev;  in ssam_dbg_device_probe()
698 	cdev->mdev.parent   = &pdev->dev;  in ssam_dbg_device_probe()
699 	cdev->mdev.minor    = MISC_DYNAMIC_MINOR;  in ssam_dbg_device_probe()
700 	cdev->mdev.name     = "surface_aggregator";  in ssam_dbg_device_probe()
701 	cdev->mdev.nodename = "surface/aggregator";  in ssam_dbg_device_probe()
702 	cdev->mdev.fops     = &ssam_controller_fops;  in ssam_dbg_device_probe()
704 	init_rwsem(&cdev->client_lock);  in ssam_dbg_device_probe()
705 	INIT_LIST_HEAD(&cdev->client_list);  in ssam_dbg_device_probe()
707 	status = misc_register(&cdev->mdev);  in ssam_dbg_device_probe()
709 		kfree(cdev);  in ssam_dbg_device_probe()
713 	platform_set_drvdata(pdev, cdev);  in ssam_dbg_device_probe()
719 	struct ssam_cdev *cdev = platform_get_drvdata(pdev);  in ssam_dbg_device_remove()  local
726 	set_bit(SSAM_CDEV_DEVICE_SHUTDOWN_BIT, &cdev->flags);  in ssam_dbg_device_remove()
728 	down_write(&cdev->client_lock);  in ssam_dbg_device_remove()
731 	list_for_each_entry(client, &cdev->client_list, node) {  in ssam_dbg_device_remove()
736 	list_for_each_entry(client, &cdev->client_list, node) {  in ssam_dbg_device_remove()
741 	list_for_each_entry(client, &cdev->client_list, node) {  in ssam_dbg_device_remove()
745 	up_write(&cdev->client_lock);  in ssam_dbg_device_remove()
752 	down_write(&cdev->lock);  in ssam_dbg_device_remove()
753 	cdev->ctrl = NULL;  in ssam_dbg_device_remove()
754 	cdev->dev = NULL;  in ssam_dbg_device_remove()
755 	up_write(&cdev->lock);  in ssam_dbg_device_remove()
757 	misc_deregister(&cdev->mdev);  in ssam_dbg_device_remove()
759 	ssam_cdev_put(cdev);  in ssam_dbg_device_remove()