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Commit bd6e2d57 authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

iwlwifi: use antenna A only under high BT load 



When bluetooth indicated high load, we should use
only antenna A in 2.4 GHz for management frames.
Add this condition to iwl_toggle_tx_ant() to make
sure it'll always be met. Note that scanning has
a separate way of forcing the antenna, because we
should scan on antenna A only regardless of BT
traffic load.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 74e5c41b

drivers/net/wireless/iwlwifi/iwl-core.c

+4 −0
Original line number Diff line number Diff line
@@ -147,6 +147,10 @@ u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) 
	int i;

	u8 ind = ant;



	if (priv->band == IEEE80211_BAND_2GHZ &&

	    priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)

		return 0;



	for (i = 0; i < RATE_ANT_NUM - 1; i++) {

		ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;

		if (valid & BIT(ind))