mac80211: fix queues stuck issue with HT bandwidth change
No upstream commit, the buggy code was removed in 3.5 in commit
7213cf2cb0dfbb4d6b55a1da000d34338f76c0e3 and others.
Rajkumar changed code for handling channel switching in
mac80211 to stop the queues in
commit
7cc44ed48d0ec0937c1f098642540b6c9ca38de5
Author: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Date: Fri Sep 16 15:32:34 2011 +0530
mac80211: Fix regression on queue stop during 2040 bss change
which went into 3.2. In the 3.4 cycle, Paul's change
commit
3117bbdb7899d43927c8ce4fe885ab7c1231c121
Author: Paul Stewart <pstew@chromium.org>
Date: Tue Mar 13 07:46:18 2012 -0700
mac80211: Don't let regulatory make us deaf
went in and changed the TX/RX enable logic, but now
the conditions for stopping and restarting the queues
were different so that now, if the AP changes between
20/40 MHz bandwidth, it can happen that we stop but
never restart the queues. This breaks the connection
and the module actually has to be reloaded to get it
back to work.
Fix this by making sure the queues are always started
when they were stopped.
Reported-by: Florian Manschwetus <manschwetus@googlemail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>