* device yet.
* @ISP_BUF_STATE_ACTIVE: The buffer is in use for an active video transfer.
* @ISP_BUF_STATE_ERROR: The device is done with the buffer and an error
* device yet.
* @ISP_BUF_STATE_ACTIVE: The buffer is in use for an active video transfer.
* @ISP_BUF_STATE_ERROR: The device is done with the buffer and an error