mac80211: update the channel context after channel switch
When the channel switch has been made, a vif is now using the channel context which was reserved. When that happens, we need to update the channel context since its parameters may change. I hit a case in which I switched to a 40Mhz channel but the reserved channel context was still on 20Mhz. The rate control would try to send 40Mhz packets on a 20Mhz channel context and that made iwlwifi's firmware unhappy. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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