uwb: use time_after() when purging stale beacons

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c
index f65a52c0afac..1ccf9eb3e086 100644
--- a/drivers/uwb/beacon.c
+++ b/drivers/uwb/beacon.c
@@ -298,11 +298,12 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
 void uwb_beca_purge(void)
 {
         struct uwb_beca_e *bce, *next;
-        unsigned long now = jiffies;
+        unsigned long expires;
+
         mutex_lock(&uwb_beca.mutex);
         list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
-                if (now - bce->ts_jiffies
-                    > msecs_to_jiffies(beacon_timeout_ms)) {
+                expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
+                if (time_after(jiffies, expires)) {
                         uwbd_dev_offair(bce);
                         list_del(&bce->node);
                         uwb_bce_put(bce);