diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-11-28 15:25:21 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-12-09 22:34:28 +0200 |
| commit | 710e4d08f2ab6eed7950884ab30e684704e325ca (patch) | |
| tree | e0d9da1fe93b83621e87ca8cbef5bd723b8f14da | |
| parent | 9d10849e4ea8bf9d8da80afa73918a9fe45c09ef (diff) | |
iwlwifi: mvm: don't send SMPS action frame with single RX antenna
Products that have only 1 antenna in Rx don't support MIMO
in RX. As a consequence, they will be in STATIC always.
Don't tell mac80211 to update SMPS in that case. mac80211
would send an action frame to the AP which is clearly
bogus.
As a matter of fact, we have seen that some APs send a
deauth when that happens.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/utils.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/utils.c b/drivers/net/wireless/iwlwifi/mvm/utils.c index 56cf819bc0c..f4aff56a36d 100644 --- a/drivers/net/wireless/iwlwifi/mvm/utils.c +++ b/drivers/net/wireless/iwlwifi/mvm/utils.c @@ -518,6 +518,11 @@ void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, int i; lockdep_assert_held(&mvm->mutex); + + /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ + if (num_of_ant(iwl_fw_valid_rx_ant(mvm->fw)) == 1) + return; + mvmvif = iwl_mvm_vif_from_mac80211(vif); mvmvif->smps_requests[req_type] = smps_request; for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { |