Commit 5e2f75b8 authored by Dan Halperin's avatar Dan Halperin Committed by John W. Linville

iwlwifi: set HT flags after channel in rxon

The HT extension channel settings require priv->staging_rxon.channel to be
accurate. However, iwl_set_rxon_ht was being called before iwl_set_rxon_channel
and thus HT40 could be broken unless another call to iwl_mac_config came in.

This problem was recently introduced by "iwlwifi: Fix to set correct ht
configuration"

The particular setting in which I noticed this was monitor mode:

	iwconfig wlan0 mode monitor
	ifconfig wlan0 up
	./iw wlan0 set channel 64 HT40-
	#./iw wlan0 set channel 64 HT40-
	tcpdump -i wlan0 -y IEEE802_11_RADIO

would only catch HT40 packets if I issued the IW command twice.

From visual inspection, iwl_set_rxon_channel does not depend on
iwl_set_rxon_ht, so simply swapping them should be safe and fixes this problem.
Signed-off-by: default avatarDaniel Halperin <dhalperi@cs.washington.edu>
Acked-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 5affcd6b
...@@ -2744,8 +2744,8 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) ...@@ -2744,8 +2744,8 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
if ((le16_to_cpu(priv->staging_rxon.channel) != ch)) if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
priv->staging_rxon.flags = 0; priv->staging_rxon.flags = 0;
iwl_set_rxon_ht(priv, ht_conf);
iwl_set_rxon_channel(priv, conf->channel); iwl_set_rxon_channel(priv, conf->channel);
iwl_set_rxon_ht(priv, ht_conf);
iwl_set_flags_for_band(priv, conf->channel->band); iwl_set_flags_for_band(priv, conf->channel->band);
spin_unlock_irqrestore(&priv->lock, flags); spin_unlock_irqrestore(&priv->lock, flags);
......
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