mpi3mr: Remove unused fields in struct mpi3mr_cmd

All of these fields are either unused, or just initialized. Remove
them. This saves about 1MB of memory for the cards that I have which can
do 8k transactions at once.

Sponsored by:		Netflix
Reviewed by:		mav, jhb
Differential Revision:	https://reviews.freebsd.org/D42538

2 files changed, 0 insertions, 9 deletions

diff --git a/sys/dev/mpi3mr/mpi3mr.c b/sys/dev/mpi3mr/mpi3mr.c
index 478b0944defa..9a052c98d13e 100644
--- a/sys/dev/mpi3mr/mpi3mr.c
+++ b/sys/dev/mpi3mr/mpi3mr.c
@@ -4985,12 +4985,9 @@ mpi3mr_get_command(struct mpi3mr_softc *sc)
 	cmd->data_dir = 0;
 	cmd->ccb = NULL;
 	cmd->targ = NULL;
-	cmd->max_segs = 0;
-	cmd->lun = 0;
 	cmd->state = MPI3MR_CMD_STATE_BUSY;
 	cmd->data = NULL;
 	cmd->length = 0;
-	cmd->out_len = 0;
 out:
 	mtx_unlock(&sc->cmd_pool_lock);
 	return cmd;
diff --git a/sys/dev/mpi3mr/mpi3mr.h b/sys/dev/mpi3mr/mpi3mr.h
index 479ba9c7b11b..b00d2ef562d8 100644
--- a/sys/dev/mpi3mr/mpi3mr.h
+++ b/sys/dev/mpi3mr/mpi3mr.h
@@ -456,19 +456,13 @@ struct mpi3mr_cmd {
 	union ccb			*ccb;
 	void				*data;
 	u_int				length;
-	u_int				out_len;
-	struct uio			uio;
-	struct iovec			iovec[MPI3MR_IOVEC_COUNT];
-	u_int				max_segs;
 	struct mpi3mr_target		*targ;
-	u_int	                	lun;
 	u_int				data_dir;
 	u_int				state;
 	bus_dmamap_t			dmamap;
 	struct scsi_sense_data		*sense;
 	struct callout			callout;
 	bool				callout_owner;
-	mpi3mr_cmd_callback_t		*timeout_handler;
 	U16				hosttag;
 	U8				req_qidx;
 	Mpi3SCSIIORequest_t		io_request;