[SCSI] stex: fix queue depth setting

We want to set the queue depth to something reasonable - not
the can_queue.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index f308a03..3790906 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -467,7 +467,7 @@
 	/* Cheat: usually extracted from Inquiry data */
 	sdev->tagged_supported = 1;
 
-	scsi_activate_tcq(sdev, sdev->host->can_queue);
+	scsi_activate_tcq(sdev, ST_CMD_PER_LUN);
 
 	return 0;
 }