uwb: use time_after() when purging stale beacons
Signed-off-by: David Vrabel <david.vrabel@csr.com>
diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c
index f65a52c..1ccf9eb 100644
--- a/drivers/uwb/beacon.c
+++ b/drivers/uwb/beacon.c
@@ -298,11 +298,12 @@
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);