diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index f1767a6b9271c..4cce71243080e 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -16,6 +16,7 @@
 #include <linux/iopoll.h>
 #include <linux/mdio.h>
 #include <linux/pci.h>
+#include <linux/time.h>
 #include "felix.h"
 
 #define VSC9959_NUM_PORTS		6
@@ -1592,7 +1593,7 @@ static void vsc9959_tas_guard_bands_update(struct ocelot *ocelot, int port)
 		u32 max_sdu;
 
 		if (min_gate_len[tc] == U64_MAX /* Gate always open */ ||
-		    min_gate_len[tc] * 1000 > needed_bit_time_ps) {
+		    min_gate_len[tc] * PSEC_PER_NSEC > needed_bit_time_ps) {
 			/* Setting QMAXSDU_CFG to 0 disables oversized frame
 			 * dropping.
 			 */
@@ -1606,7 +1607,7 @@ static void vsc9959_tas_guard_bands_update(struct ocelot *ocelot, int port)
 			 * frame, make sure to enable oversize frame dropping
 			 * for frames larger than the smallest that would fit.
 			 */
-			max_sdu = div_u64(min_gate_len[tc] * 1000,
+			max_sdu = div_u64(min_gate_len[tc] * PSEC_PER_NSEC,
 					  picos_per_byte);
 			/* A TC gate may be completely closed, which is a
 			 * special case where all packets are oversized.
diff --git a/include/linux/time64.h b/include/linux/time64.h
index 81b9686a20799..2fb8232cff1d5 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -20,6 +20,9 @@ struct itimerspec64 {
 	struct timespec64 it_value;
 };
 
+/* Parameters used to convert the timespec values: */
+#define PSEC_PER_NSEC			1000L
+
 /* Located here for timespec[64]_valid_strict */
 #define TIME64_MAX			((s64)~((u64)1 << 63))
 #define TIME64_MIN			(-TIME64_MAX - 1)
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index b9c71a304d399..0b941dd63d268 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/rcupdate.h>
+#include <linux/time.h>
 #include <net/netlink.h>
 #include <net/pkt_sched.h>
 #include <net/pkt_cls.h>
@@ -176,7 +177,7 @@ static ktime_t get_interval_end_time(struct sched_gate_list *sched,
 
 static int length_to_duration(struct taprio_sched *q, int len)
 {
-	return div_u64(len * atomic64_read(&q->picos_per_byte), 1000);
+	return div_u64(len * atomic64_read(&q->picos_per_byte), PSEC_PER_NSEC);
 }
 
 /* Returns the entry corresponding to next available interval. If
@@ -551,7 +552,7 @@ static struct sk_buff *taprio_peek(struct Qdisc *sch)
 static void taprio_set_budget(struct taprio_sched *q, struct sched_entry *entry)
 {
 	atomic_set(&entry->budget,
-		   div64_u64((u64)entry->interval * 1000,
+		   div64_u64((u64)entry->interval * PSEC_PER_NSEC,
 			     atomic64_read(&q->picos_per_byte)));
 }