uwb: use time_after() when purging stale beacons

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

uwb: use time_after() when purging stale beacons
Signed-off-by: David Vrabel <david.vrabel@csr.com>
David Vrabel
1 parent 99ee3a6d45
Showing 1 changed file with 4 additions and 3 deletions Side-by-side Diff
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);
...	...	@@ -298,11 +298,12 @@
298	298	void uwb_beca_purge(void)
299	299	{
300	300	struct uwb_beca_e bce, next;
301		- unsigned long now = jiffies;
	301	+ unsigned long expires;
	302	+
302	303	mutex_lock(&uwb_beca.mutex);
303	304	list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
304		- if (now - bce->ts_jiffies
305		- > msecs_to_jiffies(beacon_timeout_ms)) {
	305	+ expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
	306	+ if (time_after(jiffies, expires)) {
306	307	uwbd_dev_offair(bce);
307	308	list_del(&bce->node);
308	309	uwb_bce_put(bce);