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mac80211: Clear beacon_int in ieee80211_do_stop

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commit 5c21e8100d upstream.

This fixes stale beacon-int values that would keep a netdev
from going up.

To reproduce:

Create two VAP on one radio.
vap1 has beacon-int 100, start it.
vap2 has beacon-int 240, start it (and it will fail
  because beacon-int mismatch).
reconfigure vap2 to have beacon-int 100 and start it.
  It will fail because the stale beacon-int 240 will be used
  in the ifup path and hostapd never gets a chance to set the
  new beacon interval.

Cc: stable@vger.kernel.org
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Greear
2018-10-23 13:36:52 -07:00
committed by Greg Kroah-Hartman
parent e08ab93325
commit a75ac4e15e
1 changed files with 2 additions and 0 deletions
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2
net/mac80211/iface.c
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@@ -1015,6 +1015,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
if (local->open_count == 0) if (local->open_count == 0)
ieee80211_clear_tx_pending(local); ieee80211_clear_tx_pending(local);
sdata->vif.bss_conf.beacon_int = 0;
/* /*
* If the interface goes down while suspended, presumably because * If the interface goes down while suspended, presumably because
* the device was unplugged and that happens before our resume, * the device was unplugged and that happens before our resume,