diff --git a/drivers/s390/scsi/Makefile b/drivers/s390/scsi/Makefile
index 352056eb0dd1..01b41f7c6860 100644
--- a/drivers/s390/scsi/Makefile
+++ b/drivers/s390/scsi/Makefile
@@ -3,6 +3,8 @@
 # Makefile for the S/390 specific device drivers
 #
 
+CONTEXT_ANALYSIS := y
+
 zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_dbf.o zfcp_erp.o \
 	     zfcp_fc.o zfcp_fsf.o zfcp_qdio.o zfcp_scsi.o zfcp_sysfs.o \
 	     zfcp_unit.o zfcp_diag.o
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 40bd597fb4cd..0eb9bc9d03e4 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -154,7 +154,8 @@ extern ssize_t zfcp_fsf_scnprint_fc_security(char *buf, size_t size,
 /* zfcp_qdio.c */
 extern int zfcp_qdio_setup(struct zfcp_adapter *);
 extern void zfcp_qdio_destroy(struct zfcp_qdio *);
-extern int zfcp_qdio_sbal_get(struct zfcp_qdio *);
+extern int zfcp_qdio_sbal_get(struct zfcp_qdio *qdio)
+	__must_hold(qdio->req_q_lock);
 extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_qdio_req *);
 extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, struct zfcp_qdio_req *,
 				   struct scatterlist *);
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index ce1af72d9b61..bac8385e069f 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -281,6 +281,7 @@ static int zfcp_qdio_sbal_check(struct zfcp_qdio *qdio)
  * Returns: 0 on success, -EIO if there is no free sbal after waiting.
  */
 int zfcp_qdio_sbal_get(struct zfcp_qdio *qdio)
+	__must_hold(qdio->req_q_lock)
 {
 	long ret;