diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 12dc0d176f3f..425a61c79bb6 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -153,35 +153,6 @@ enum {
 	ST_ADDITIONAL_MEM			= 0x200000,
 };
 
-/* SCSI inquiry data */
-typedef struct st_inq {
-	u8 DeviceType			:5;
-	u8 DeviceTypeQualifier		:3;
-	u8 DeviceTypeModifier		:7;
-	u8 RemovableMedia		:1;
-	u8 Versions;
-	u8 ResponseDataFormat		:4;
-	u8 HiSupport			:1;
-	u8 NormACA			:1;
-	u8 ReservedBit			:1;
-	u8 AERC				:1;
-	u8 AdditionalLength;
-	u8 Reserved[2];
-	u8 SoftReset			:1;
-	u8 CommandQueue			:1;
-	u8 Reserved2			:1;
-	u8 LinkedCommands		:1;
-	u8 Synchronous			:1;
-	u8 Wide16Bit			:1;
-	u8 Wide32Bit			:1;
-	u8 RelativeAddressing		:1;
-	u8 VendorId[8];
-	u8 ProductId[16];
-	u8 ProductRevisionLevel[4];
-	u8 VendorSpecific[20];
-	u8 Reserved3[40];
-} ST_INQ;
-
 struct st_sgitem {
 	u8 ctrl;	/* SG_CF_xxx */
 	u8 reserved[3];
@@ -285,7 +256,7 @@ struct st_drvver {
 #define MU_REQ_BUFFER_SIZE	(MU_REQ_COUNT * sizeof(struct req_msg))
 #define MU_STATUS_BUFFER_SIZE	(MU_STATUS_COUNT * sizeof(struct status_msg))
 #define MU_BUFFER_SIZE		(MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
-#define STEX_EXTRA_SIZE		max(sizeof(struct st_frame), sizeof(ST_INQ))
+#define STEX_EXTRA_SIZE		sizeof(struct st_frame)
 #define STEX_BUFFER_SIZE	(MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
 
 struct st_ccb {
@@ -662,24 +633,6 @@ static void stex_ys_commands(struct st_hba *hba,
 		resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
 		scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
 			le32_to_cpu(*(__le32 *)&resp->variable[0]));
-		return;
-	}
-
-	if (resp->srb_status != 0)
-		return;
-
-	/* determine inquiry command status by DeviceTypeQualifier */
-	if (ccb->cmd->cmnd[0] == INQUIRY &&
-		resp->scsi_status == SAM_STAT_GOOD) {
-		ST_INQ *inq_data;
-
-		scsi_sg_copy_to_buffer(ccb->cmd, hba->copy_buffer,
-				       STEX_EXTRA_SIZE);
-		inq_data = (ST_INQ *)hba->copy_buffer;
-		if (inq_data->DeviceTypeQualifier != 0)
-			ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
-		else
-			ccb->srb_status = SRB_STATUS_SUCCESS;
 	}
 }
 
@@ -1148,7 +1101,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		host->max_lun = 8;
 		host->max_id = 16 + 1;
 	} else if (hba->cardtype == st_yosemite) {
-		host->max_lun = 128;
+		host->max_lun = 256;
 		host->max_id = 1 + 1;
 	} else {
 		/* st_vsc , st_vsc1 and st_seq */
@@ -1301,18 +1254,7 @@ static struct pci_device_id stex_pci_tbl[] = {
 	{ 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
 
 	/* st_yosemite */
-	{ 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
-		st_yosemite }, /* SuperTrak EX4650 */
-	{ 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
-		st_yosemite }, /* SuperTrak EX4650o */
-	{ 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
-		st_yosemite }, /* SuperTrak EX8650EL */
-	{ 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
-		st_yosemite }, /* SuperTrak EX8650 */
-	{ 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
-		st_yosemite }, /* SuperTrak EX8654 */
-	{ 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		st_yosemite }, /* generic st_yosemite */
+	{ 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yosemite },
 
 	/* st_seq */
 	{ 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },