---

yaml
---
r: 134873
b: refs/heads/master
c: cb3a8ee
h: refs/heads/master
i:
  134871: 19a2fd6
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: abd2fdb4c606f0e5cfec3647d57ebd20f03caafd
+refs/heads/master: cb3a8eec0e66edfe8db7d3b3bf19d25745bae3c3

trunk/net/wireless/core.h

@@ -49,6 +49,7 @@ struct cfg80211_registered_device {
 	struct rb_root bss_tree;
 	u32 bss_generation;
 	struct cfg80211_scan_request *scan_req; /* protected by RTNL */
+	unsigned long suspend_at;
 
 	/* must be last because of the way we do wiphy_priv(),
 	 * and it should at least be aligned to NETDEV_ALIGN */
@@ -113,5 +114,7 @@ void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
 void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby);
 
 void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
+void cfg80211_bss_age(struct cfg80211_registered_device *dev,
+                      unsigned long age_secs);
 
 #endif /* __NET_WIRELESS_CORE_H */

trunk/net/wireless/scan.c

@@ -61,6 +61,18 @@ static void bss_release(struct kref *ref)
 	kfree(bss);
 }
 
+/* must hold dev->bss_lock! */
+void cfg80211_bss_age(struct cfg80211_registered_device *dev,
+                      unsigned long age_secs)
+{
+	struct cfg80211_internal_bss *bss;
+	unsigned long age_jiffies = msecs_to_jiffies(age_secs * MSEC_PER_SEC);
+
+	list_for_each_entry(bss, &dev->bss_list, list) {
+		bss->ts -= age_jiffies;
+	}
+}
+
 /* must hold dev->bss_lock! */
 void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
 {
@@ -584,6 +596,15 @@ static void ieee80211_scan_add_ies(struct iw_request_info *info,
 	}
 }
 
+static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
+{
+	unsigned long end = jiffies;
+
+	if (end >= start)
+		return jiffies_to_msecs(end - start);
+
+	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
+}
 
 static char *
 ieee80211_bss(struct iw_request_info *info,
@@ -763,8 +784,8 @@ ieee80211_bss(struct iw_request_info *info,
 						  &iwe, buf);
 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVCUSTOM;
-		sprintf(buf, " Last beacon: %dms ago",
-			jiffies_to_msecs(jiffies - bss->ts));
+		sprintf(buf, " Last beacon: %ums ago",
+			elapsed_jiffies_msecs(bss->ts));
 		iwe.u.data.length = strlen(buf);
 		current_ev = iwe_stream_add_point(info, current_ev,
 						  end_buf, &iwe, buf);

trunk/net/wireless/sysfs.c

@@ -60,6 +60,8 @@ static int wiphy_suspend(struct device *dev, pm_message_t state)
 	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
 	int ret = 0;
 
+	rdev->suspend_at = get_seconds();
+
 	if (rdev->ops->suspend) {
 		rtnl_lock();
 		ret = rdev->ops->suspend(&rdev->wiphy);
@@ -74,6 +76,11 @@ static int wiphy_resume(struct device *dev)
 	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
 	int ret = 0;
 
+	/* Age scan results with time spent in suspend */
+	spin_lock_bh(&rdev->bss_lock);
+	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
+	spin_unlock_bh(&rdev->bss_lock);
+
 	if (rdev->ops->resume) {
 		rtnl_lock();
 		ret = rdev->ops->resume(&rdev->wiphy);