mps_user_command
static int mps_user_command(struct mps_softc *, struct mps_usr_command *);
error = mps_user_command(sc, (struct mps_usr_command *)arg);
if (mps_user_command(fd, &req, sizeof(req), &reply, sizeof(reply),
if (mps_user_command(fd, &req, sizeof(req), &reply, sizeof(reply),
if (mps_user_command(fd, &req, sizeof(req), &reply, sizeof(reply),
error = mps_user_command(fd, &req, sizeof(MPI2_IOC_FACTS_REQUEST),
int mps_user_command(int fd, void *req, uint32_t req_len, void *reply,