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cfg80211: disable CSA for all drivers 

The channel switch announcement code has some major locking problems
which can cause a deadlock in worst case. A series of fixes has been
proposed, but these are non-trivial and need to be tested first.
Therefore disable CSA completely for 3.13.

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Simon Wunderlich 2013-11-26 16:07:26 +01:00 committed by Johannes Berg
parent 24d47300d1
commit dda444d524
1 changed files with 6 additions and 0 deletions
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6
net/wireless/core.c
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@ -454,6 +454,12 @@ int wiphy_register(struct wiphy *wiphy)
/* support for 5/10 MHz is broken due to nl80211 API mess - disable */
wiphy->flags &= ~WIPHY_FLAG_SUPPORTS_5_10_MHZ;
/*
* There are major locking problems in nl80211/mac80211 for CSA,
* disable for all drivers until this has been reworked.
*/
wiphy->flags &= ~WIPHY_FLAG_HAS_CHANNEL_SWITCH;
#ifdef CONFIG_PM
if (WARN_ON(wiphy->wowlan &&
(wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&