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→QueryEvent
** EvtId=3: ErrorNotifierEvent
** EvtId=3: ErrorNotifierEvent
* /dev/nvhost-ctrl: Used to get events for syncpts.
* /dev/nvhost-ctrl: Used to get events for syncpts.
** EvtId=(event_slot | ((syncpt_id & 0xFFF) << 16) | (is_valid << 28)): New format used by NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT/NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX.
** EvtId=(event_slot | ((syncpt_id & 0xFFF) << 16) | (is_valid << 28)): New format used by [[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT|NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT]]/[[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX|NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX]].
** EvtId=(event_slot | (syncpt_id << 4)): Old format used by NVHOST_IOCTL_CTRL_SYNCPT_WAITEX.
** EvtId=(event_slot | (syncpt_id << 4)): Old format used by [[#NVHOST_IOCTL_CTRL_SYNCPT_WAITEX|NVHOST_IOCTL_CTRL_SYNCPT_WAITEX]].
* /dev/nvhost-ctrl-gpu
* /dev/nvhost-ctrl-gpu
** EvtId=1: Returns error_event_handle.
** EvtId=1: Returns error_event_handle.