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Diffstat (limited to 'drivers/xen/xen-scsiback.c')
-rw-r--r--drivers/xen/xen-scsiback.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 61653a03a8f5..9faca6a60bb0 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -709,12 +709,11 @@ static int prepare_pending_reqs(struct vscsibk_info *info,
709static int scsiback_do_cmd_fn(struct vscsibk_info *info) 709static int scsiback_do_cmd_fn(struct vscsibk_info *info)
710{ 710{
711 struct vscsiif_back_ring *ring = &info->ring; 711 struct vscsiif_back_ring *ring = &info->ring;
712 struct vscsiif_request *ring_req; 712 struct vscsiif_request ring_req;
713 struct vscsibk_pend *pending_req; 713 struct vscsibk_pend *pending_req;
714 RING_IDX rc, rp; 714 RING_IDX rc, rp;
715 int err, more_to_do; 715 int err, more_to_do;
716 uint32_t result; 716 uint32_t result;
717 uint8_t act;
718 717
719 rc = ring->req_cons; 718 rc = ring->req_cons;
720 rp = ring->sring->req_prod; 719 rp = ring->sring->req_prod;
@@ -735,11 +734,10 @@ static int scsiback_do_cmd_fn(struct vscsibk_info *info)
735 if (!pending_req) 734 if (!pending_req)
736 return 1; 735 return 1;
737 736
738 ring_req = RING_GET_REQUEST(ring, rc); 737 ring_req = *RING_GET_REQUEST(ring, rc);
739 ring->req_cons = ++rc; 738 ring->req_cons = ++rc;
740 739
741 act = ring_req->act; 740 err = prepare_pending_reqs(info, &ring_req, pending_req);
742 err = prepare_pending_reqs(info, ring_req, pending_req);
743 if (err) { 741 if (err) {
744 switch (err) { 742 switch (err) {
745 case -ENODEV: 743 case -ENODEV:
@@ -755,9 +753,9 @@ static int scsiback_do_cmd_fn(struct vscsibk_info *info)
755 return 1; 753 return 1;
756 } 754 }
757 755
758 switch (act) { 756 switch (ring_req.act) {
759 case VSCSIIF_ACT_SCSI_CDB: 757 case VSCSIIF_ACT_SCSI_CDB:
760 if (scsiback_gnttab_data_map(ring_req, pending_req)) { 758 if (scsiback_gnttab_data_map(&ring_req, pending_req)) {
761 scsiback_fast_flush_area(pending_req); 759 scsiback_fast_flush_area(pending_req);
762 scsiback_do_resp_with_sense(NULL, 760 scsiback_do_resp_with_sense(NULL,
763 DRIVER_ERROR << 24, 0, pending_req); 761 DRIVER_ERROR << 24, 0, pending_req);
@@ -768,7 +766,7 @@ static int scsiback_do_cmd_fn(struct vscsibk_info *info)
768 break; 766 break;
769 case VSCSIIF_ACT_SCSI_ABORT: 767 case VSCSIIF_ACT_SCSI_ABORT:
770 scsiback_device_action(pending_req, TMR_ABORT_TASK, 768 scsiback_device_action(pending_req, TMR_ABORT_TASK,
771 ring_req->ref_rqid); 769 ring_req.ref_rqid);
772 break; 770 break;
773 case VSCSIIF_ACT_SCSI_RESET: 771 case VSCSIIF_ACT_SCSI_RESET:
774 scsiback_device_action(pending_req, TMR_LUN_RESET, 0); 772 scsiback_device_action(pending_req, TMR_LUN_RESET, 0);