diff --git a/sys/cam/ata/ata_xpt.c b/sys/cam/ata/ata_xpt.c
index d7fe3d7d3023..fef85b82203e 100644
--- a/sys/cam/ata/ata_xpt.c
+++ b/sys/cam/ata/ata_xpt.c
@@ -942,9 +942,9 @@ device_fail:	if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 				xpt_action((union ccb *)&cts);
 			}
 		}
+		ata_device_transport(path);
 		if (changed)
 			proberequestdefaultnegotiation(periph);
-		ata_device_transport(path);
 		PROBE_SET_ACTION(softc, PROBE_SETMODE);
 		xpt_release_ccb(done_ccb);
 		xpt_schedule(periph, priority);
@@ -1123,6 +1123,9 @@ device_fail:	if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 		snprintf(ident_buf->revision, sizeof(ident_buf->revision),
 		    "%04x", softc->pm_prv);
 		path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
+		ata_device_transport(path);
+		if (periph->path->device->flags & CAM_DEV_UNCONFIGURED)
+			proberequestdefaultnegotiation(periph);
 		/* Set supported bits. */
 		bzero(&cts, sizeof(cts));
 		xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
@@ -1200,6 +1203,9 @@ device_fail:	if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 
 			path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
 		}
+		ata_device_transport(path);
+		if (changed)
+			proberequestdefaultnegotiation(periph);
 
 		if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
 			path->device->flags &= ~CAM_DEV_UNCONFIGURED;
@@ -1777,6 +1783,12 @@ ata_get_transfer_settings(struct ccb_trans_settings *cts)
 	sim = cts->ccb_h.path->bus->sim;
 	(*(sim->sim_action))(sim, (union ccb *)cts);
 
+	if (cts->protocol == PROTO_UNKNOWN ||
+	    cts->protocol == PROTO_UNSPECIFIED) {
+		cts->protocol = device->protocol;
+		cts->protocol_version = device->protocol_version;
+	}
+
 	if (cts->protocol == PROTO_ATA) {
 		ata = &cts->proto_specific.ata;
 		if ((ata->valid & CTS_ATA_VALID_TQ) == 0) {
@@ -1797,6 +1809,12 @@ ata_get_transfer_settings(struct ccb_trans_settings *cts)
 				scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 		}
 	}
+
+	if (cts->transport == XPORT_UNKNOWN ||
+	    cts->transport == XPORT_UNSPECIFIED) {
+		cts->transport = device->transport;
+		cts->transport_version = device->transport_version;
+	}
 }
 
 static void
diff --git a/sys/dev/ahci/ahci.c b/sys/dev/ahci/ahci.c
index 3b26da3fd54e..ccdba319e7b4 100644
--- a/sys/dev/ahci/ahci.c
+++ b/sys/dev/ahci/ahci.c
@@ -2881,7 +2881,7 @@ ahciaction(struct cam_sim *sim, union ccb *ccb)
 			d = &ch->curr[ccb->ccb_h.target_id];
 		else
 			d = &ch->user[ccb->ccb_h.target_id];
-		cts->protocol = PROTO_ATA;
+		cts->protocol = PROTO_UNSPECIFIED;
 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cts->transport = XPORT_SATA;
 		cts->transport_version = XPORT_VERSION_UNSPECIFIED;
@@ -2967,7 +2967,7 @@ ahciaction(struct cam_sim *sim, union ccb *ccb)
 		cpi->unit_number = cam_sim_unit(sim);
 		cpi->transport = XPORT_SATA;
 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
-		cpi->protocol = PROTO_ATA;
+		cpi->protocol = PROTO_UNSPECIFIED;
 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cpi->maxio = MAXPHYS;
 		/* ATI SB600 can't handle 256 sectors with FPDMA (NCQ). */
diff --git a/sys/dev/ata/ata-all.c b/sys/dev/ata/ata-all.c
index 6bee48d5b1a2..73e32dd749db 100644
--- a/sys/dev/ata/ata-all.c
+++ b/sys/dev/ata/ata-all.c
@@ -1787,7 +1787,7 @@ ataaction(struct cam_sim *sim, union ccb *ccb)
 			d = &ch->curr[ccb->ccb_h.target_id];
 		else
 			d = &ch->user[ccb->ccb_h.target_id];
-		cts->protocol = PROTO_ATA;
+		cts->protocol = PROTO_UNSPECIFIED;
 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		if (ch->flags & ATA_SATA) {
 			cts->transport = XPORT_SATA;
@@ -1875,7 +1875,7 @@ ataaction(struct cam_sim *sim, union ccb *ccb)
 		else
 			cpi->transport = XPORT_ATA;
 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
-		cpi->protocol = PROTO_ATA;
+		cpi->protocol = PROTO_UNSPECIFIED;
 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cpi->maxio = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
 		if (device_get_devclass(device_get_parent(parent)) ==
diff --git a/sys/dev/mvs/mvs.c b/sys/dev/mvs/mvs.c
index debe55af4b76..1c7c930b602d 100644
--- a/sys/dev/mvs/mvs.c
+++ b/sys/dev/mvs/mvs.c
@@ -2301,7 +2301,7 @@ mvsaction(struct cam_sim *sim, union ccb *ccb)
 			d = &ch->curr[ccb->ccb_h.target_id];
 		else
 			d = &ch->user[ccb->ccb_h.target_id];
-		cts->protocol = PROTO_ATA;
+		cts->protocol = PROTO_UNSPECIFIED;
 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cts->transport = XPORT_SATA;
 		cts->transport_version = XPORT_VERSION_UNSPECIFIED;
@@ -2385,7 +2385,7 @@ mvsaction(struct cam_sim *sim, union ccb *ccb)
 		cpi->unit_number = cam_sim_unit(sim);
 		cpi->transport = XPORT_SATA;
 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
-		cpi->protocol = PROTO_ATA;
+		cpi->protocol = PROTO_UNSPECIFIED;
 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cpi->maxio = MAXPHYS;
 		if ((ch->quirks & MVS_Q_SOC) == 0) {
diff --git a/sys/dev/siis/siis.c b/sys/dev/siis/siis.c
index 2b709cd9693d..caf493a9bd08 100644
--- a/sys/dev/siis/siis.c
+++ b/sys/dev/siis/siis.c
@@ -1884,7 +1884,7 @@ siisaction(struct cam_sim *sim, union ccb *ccb)
 			d = &ch->curr[ccb->ccb_h.target_id];
 		else
 			d = &ch->user[ccb->ccb_h.target_id];
-		cts->protocol = PROTO_ATA;
+		cts->protocol = PROTO_UNSPECIFIED;
 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cts->transport = XPORT_SATA;
 		cts->transport_version = XPORT_VERSION_UNSPECIFIED;
@@ -1960,7 +1960,7 @@ siisaction(struct cam_sim *sim, union ccb *ccb)
 		cpi->unit_number = cam_sim_unit(sim);
 		cpi->transport = XPORT_SATA;
 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
-		cpi->protocol = PROTO_ATA;
+		cpi->protocol = PROTO_UNSPECIFIED;
 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
 		cpi->maxio = MAXPHYS;
 		cpi->hba_vendor = pci_get_vendor(parent);