diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index 506bbb4..c8755ad 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -2155,6 +2155,10 @@
 
 	nsp_msg(KERN_INFO, "loading...");
 	pcmcia_get_card_services_info(&serv);
+	if (serv.Revision != CS_RELEASE_CODE) {
+		nsp_msg(KERN_DEBUG, "Card Services release does not match!");
+		return -EINVAL;
+	}
 	register_pcmcia_driver(&dev_info, &nsp_cs_attach, &nsp_cs_detach);
 
 	nsp_dbg(NSP_DEBUG_INIT, "out");