Merge "tspp2: Fix event callback deadlock"

{

	struct tspp2_event_work *event_work =

		container_of(work, struct tspp2_event_work, work);

	struct tspp2_event_work cb_info = *event_work;

	if (mutex_lock_interruptible(&event_work->device->mutex))

		return;

	if (event_work->callback)

		event_work->callback(event_work->cookie,

					event_work->event_bitmask);

	list_add_tail(&event_work->link, &event_work->device->free_work_list);

	mutex_unlock(&event_work->device->mutex);

	/*

	 * Must run callback with tspp2 device mutex unlocked,

	 * as callback might call tspp2 driver API and cause a deadlock.

	 */

	if (cb_info.callback)

		cb_info.callback(cb_info.cookie, cb_info.event_bitmask);

}

/**