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authorAvraham Stern <avraham.stern@intel.com>2017-01-09 15:39:15 +0200
committerLuca Coelho <luciano.coelho@intel.com>2017-02-08 17:54:22 +0200
commitb45242c99f503d0a526c2b1f647ad562f9cf9dd5 (patch)
treef0a9bb1739241b5a4240c55579357f2098ee8717 /net/batman-adv
parent2b18824a5d1eae58946e3c8a60d48f0b1ff32265 (diff)
iwlwifi: mvm: Fix CSA received immediately after association
The session protection set for association is only removed when BSS_CHANGED_BEACON_INFO is set and BSS_CHANGED_ASSOC is not set. However, mac80211 may set both on association (in case a beacon was already received). In this case, mac80211 will not set BSS_CHANGED_BEACON_INFO on the next beacons because it has already notified the beacon change, so the session protection is never removed (until the session protection ends). When a CSA is received within this time, the station will fail to folllow the channel switch because it cannot schedule the time event. Fix this by removing the session protection when BSS_CHANGED_BEACON_INFO and BSS_CHANGED_ASSOC are both set. Signed-off-by: Avraham Stern <avraham.stern@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'net/batman-adv')
0 files changed, 0 insertions, 0 deletions
0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/6lowpan/nhc.h')