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authorBob Copeland <me@bobcopeland.com>2009-07-29 10:13:03 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-08-04 16:43:23 -0400
commit97af743207466ff8b477e14bfb7af0ba2c93375b (patch)
tree9fc275981b34346284c1aedd370c54854f5369ae /net/mac80211/pm.c
parentad2f34b41fd6e2b84c896ccf321d5de0a7c7cd52 (diff)
downloadop-kernel-dev-97af743207466ff8b477e14bfb7af0ba2c93375b.zip
op-kernel-dev-97af743207466ff8b477e14bfb7af0ba2c93375b.tar.gz
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 <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/pm.c')
-rw-r--r--net/mac80211/pm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 5e3d476..3320f7d 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -96,6 +96,10 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
if (!netif_running(sdata->dev))
continue;
+ /* disable beaconing */
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_BEACON_ENABLED);
+
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = sdata->dev->dev_addr;
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