Merge "gpu: drm: msm: add event to event_list after register is successful"

/*

 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2018, 2020 The Linux Foundation. All rights reserved.

 * Copyright (C) 2013 Red Hat

 * Author: Rob Clark <robdclark@gmail.com>

 *

	 * calls add to client list and return.

	 */

	count = msm_event_client_count(dev, req_event, false);

	if (count) {

		/* Add current client to list */

		spin_lock_irqsave(&dev->event_lock, flag);

		list_add_tail(&client->base.link, &priv->client_event_list);

		spin_unlock_irqrestore(&dev->event_lock, flag);

	if (count)

		return 0;

	}

	ret = msm_register_event(dev, req_event, file, true);

	if (ret) {

		DRM_ERROR("failed to enable event %x object %x object id %d\n",

			req_event->event, req_event->object_type,

			req_event->object_id);

		kfree(client);

	} else {

		/* Add current client to list */

		spin_lock_irqsave(&dev->event_lock, flag);

		list_del(&client->base.link);

		list_add_tail(&client->base.link, &priv->client_event_list);

		spin_unlock_irqrestore(&dev->event_lock, flag);

		kfree(client);

	}

	return ret;

}