pqi_aio_r56_path_request
struct pqi_aio_r56_path_request *request, struct scsi_cmnd *scmd,
iu_length = offsetof(struct pqi_aio_r56_path_request, sg_descriptors) -
struct pqi_aio_r56_path_request *r56_request;
memset(r56_request, 0, offsetof(struct pqi_aio_r56_path_request, sg_descriptors));