mac80211: Give it some time to do the TSF sync

Give slow hardware some time to do the TSF sync, to not run into an IBS= S merging endless loop in some rarely situations.

Version 2 adds a comment.

---

index 1bbfc70..ea737bf 100644
@@ -332,6 +332,10 @@ static void ieee80211_rx_bss_info(struct ieee80211=

_sub_if_data *sdata,
jiffies);
#endif
=20
+ /* give slow hardware some time to do the TSF sync */
+ if (rx_timestamp > 0x400000)
+ goto put_bss;
+
if (beacon_timestamp > rx_timestamp) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG "%s: beacon TSF higher than "

--=20
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569a
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