diff --git a/iscsi-scst/kernel/conn.c b/iscsi-scst/kernel/conn.c
index 3b3fcc511..0b5462856 100644
--- a/iscsi-scst/kernel/conn.c
+++ b/iscsi-scst/kernel/conn.c
@@ -579,9 +579,9 @@ static void iscsi_write_space_ready(struct sock *sk)
 	return;
 }
 
-static void conn_rsp_timer_fn(unsigned long arg)
+static void conn_rsp_timer_fn(struct timer_list *timer)
 {
-	struct iscsi_conn *conn = (struct iscsi_conn *)arg;
+	struct iscsi_conn *conn = container_of(timer, typeof(*conn), rsp_timer);
 	struct iscsi_cmnd *cmnd;
 	unsigned long j = jiffies;
 
@@ -952,7 +952,7 @@ int iscsi_init_conn(struct iscsi_session *session,
 	spin_lock_init(&conn->write_list_lock);
 	INIT_LIST_HEAD(&conn->write_list);
 	INIT_LIST_HEAD(&conn->write_timeout_list);
-	setup_timer(&conn->rsp_timer, conn_rsp_timer_fn, (unsigned long)conn);
+	timer_setup(&conn->rsp_timer, conn_rsp_timer_fn, 0);
 	init_waitqueue_head(&conn->read_state_waitQ);
 	init_completion(&conn->ready_to_free);
 	INIT_LIST_HEAD(&conn->reinst_pending_cmd_list);
diff --git a/iscsi-scst/kernel/isert-scst/isert_login.c b/iscsi-scst/kernel/isert-scst/isert_login.c
index 115c297bd..c367fc7bf 100644
--- a/iscsi-scst/kernel/isert-scst/isert_login.c
+++ b/iscsi-scst/kernel/isert-scst/isert_login.c
@@ -135,9 +135,10 @@ static void isert_close_conn_fn(struct work_struct *work)
 	isert_close_connection(conn);
 }
 
-static void isert_conn_timer_fn(unsigned long arg)
+static void isert_conn_timer_fn(struct timer_list *timer)
 {
-	struct isert_conn_dev *conn_dev = (struct isert_conn_dev *)arg;
+	struct isert_conn_dev *conn_dev = container_of(timer, typeof(*conn_dev),
+						       tmo_timer);
 	struct iscsi_conn *conn = conn_dev->conn;
 
 	TRACE_ENTRY();
@@ -171,8 +172,7 @@ static int add_new_connection(struct isert_listener_dev *dev,
 	INIT_WORK(&conn->close_work, isert_close_conn_fn);
 #endif
 
-	setup_timer(&conn_dev->tmo_timer, isert_conn_timer_fn,
-		    (unsigned long)conn_dev);
+	timer_setup(&conn_dev->tmo_timer, isert_conn_timer_fn, 0);
 	conn_dev->tmo_timer.expires = jiffies + 60 * HZ;
 	add_timer(&conn_dev->tmo_timer);
 	conn_dev->timer_active = 1;
diff --git a/qla2x00t/qla_init.c b/qla2x00t/qla_init.c
index 69bdaa297..410e3cc85 100644
--- a/qla2x00t/qla_init.c
+++ b/qla2x00t/qla_init.c
@@ -43,10 +43,9 @@ int qla24xx_update_fcport_fcp_prio(scsi_qla_host_t *, fc_port_t *);
 
 /* SRB Extensions ---------------------------------------------------------- */
 
-void
-qla2x00_sp_timeout(unsigned long __data)
+void qla2x00_sp_timeout(struct timer_list *timer)
 {
-	srb_t *sp = (srb_t *)__data;
+	srb_t *sp = container_of(timer, typeof(*sp), u.iocb_cmd.timer);
 	struct srb_iocb *iocb;
 	fc_port_t *fcport = sp->fcport;
 	struct qla_hw_data *ha = fcport->vha->hw;
diff --git a/qla2x00t/qla_inline.h b/qla2x00t/qla_inline.h
index 03ad04c2b..e73c3a8f4 100644
--- a/qla2x00t/qla_inline.h
+++ b/qla2x00t/qla_inline.h
@@ -171,8 +171,7 @@ done:
 static inline void
 qla2x00_init_timer(srb_t *sp, unsigned long tmo)
 {
-	setup_timer(&sp->u.iocb_cmd.timer, qla2x00_sp_timeout,
-		    (unsigned long)sp);
+	timer_setup(&sp->u.iocb_cmd.timer, qla2x00_sp_timeout, 0);
 	sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
 	add_timer(&sp->u.iocb_cmd.timer);
 	sp->free = qla2x00_sp_free;
diff --git a/scst/include/backport.h b/scst/include/backport.h
index 88f5fa971..d06230ee4 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -680,6 +680,21 @@ struct t10_pi_tuple {
 };
 #endif
 
+/* <linux/timer.h> */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0)
+/*
+ * See also commit 686fef928bba ("timer: Prepare to change timer callback
+ * argument type").
+ */
+#define timer_setup(_timer, _fn, _flags) do {			\
+	init_timer(_timer);					\
+	(_timer)->function = (void (*)(unsigned long))(_fn);	\
+	(_timer)->data = (unsigned long)(_timer);		\
+	(_timer)->flags = (_flags);				\
+} while (0)
+#endif
+
 /* <linux/types.h> */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
diff --git a/scst/src/scst_lib.c b/scst/src/scst_lib.c
index 4b051f74a..65fd4c1a4 100644
--- a/scst/src/scst_lib.c
+++ b/scst/src/scst_lib.c
@@ -1685,7 +1685,7 @@ static void scst_release_space(struct scst_cmd *cmd);
 static void scst_clear_reservation(struct scst_tgt_dev *tgt_dev);
 static int scst_alloc_add_tgt_dev(struct scst_session *sess,
 	struct scst_acg_dev *acg_dev, struct scst_tgt_dev **out_tgt_dev);
-static void scst_tgt_retry_timer_fn(unsigned long arg);
+static void scst_tgt_retry_timer_fn(struct timer_list *timer);
 
 #ifdef CONFIG_SCST_DEBUG_TM
 static void tm_dbg_init_tgt_dev(struct scst_tgt_dev *tgt_dev);
@@ -4091,7 +4091,7 @@ int scst_alloc_tgt(struct scst_tgt_template *tgtt, struct scst_tgt **tgt)
 	t->tgt_supported_dif_block_sizes = tgtt->supported_dif_block_sizes;
 	spin_lock_init(&t->tgt_lock);
 	INIT_LIST_HEAD(&t->retry_cmd_list);
-	setup_timer(&t->retry_timer, scst_tgt_retry_timer_fn, (unsigned long)t);
+	timer_setup(&t->retry_timer, scst_tgt_retry_timer_fn, 0);
 	atomic_set(&t->tgt_dif_app_failed_tgt, 0);
 	atomic_set(&t->tgt_dif_ref_failed_tgt, 0);
 	atomic_set(&t->tgt_dif_guard_failed_tgt, 0);
@@ -7480,9 +7480,9 @@ void scst_check_retries(struct scst_tgt *tgt)
 	return;
 }
 
-static void scst_tgt_retry_timer_fn(unsigned long arg)
+static void scst_tgt_retry_timer_fn(struct timer_list *timer)
 {
-	struct scst_tgt *tgt = (struct scst_tgt *)arg;
+	struct scst_tgt *tgt = container_of(timer, typeof(*tgt), retry_timer);
 	unsigned long flags;
 
 	TRACE_RETRY("Retry timer expired (retry_cmds %d)", tgt->retry_cmds);