From 97af743207466ff8b477e14bfb7af0ba2c93375b Mon Sep 17 00:00:00 2001 From: Bob Copeland Date: Wed, 29 Jul 2009 10:13:03 +0200 Subject: mac80211: disable beacons before removing the associated interface When downing interfaces, it's a good idea to tell the driver to stop sending beacons; that way the driver doesn't need special code in ops->remove_interface() when it should already handle the case in bss_info_changed(). This fixes a potential crash with at least ath5k since the vif pointer will be nullified while beacon interrupts are still active. Signed-off-by: Bob Copeland Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/mac80211/main.c') diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 9dd8d25611e..5e76dd1daf7 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -198,7 +198,8 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, } if (changed & BSS_CHANGED_BEACON_ENABLED) { - if (test_bit(SCAN_SW_SCANNING, &local->scanning)) { + if (local->quiescing || !netif_running(sdata->dev) || + test_bit(SCAN_SW_SCANNING, &local->scanning)) { sdata->vif.bss_conf.enable_beacon = false; } else { /* -- cgit v1.2.2