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iwlwifi: trust mac80211 HT40 setting

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When mac80211 asks us to do HT40, it'll not do so
on a channel that we marked as not having HT40+/-
with IEEE80211_CHAN_NO_HT40PLUS (or MINUS). Thus,
there's no need to verify it again in the driver.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2012-05-21 12:56:31 +02:00
parent 6468a01a71
commit 20041ea622
1 changed files with 1 additions and 23 deletions
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24
drivers/net/wireless/iwlwifi/iwl-agn-sta.c
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@ -171,26 +171,6 @@ int iwl_send_add_sta(struct iwl_priv *priv,
return cmd.handler_status;
}
static bool iwl_is_channel_extension(struct iwl_priv *priv,
enum ieee80211_band band,
u16 channel, u8 extension_chan_offset)
{
const struct iwl_channel_info *ch_info;
ch_info = iwl_get_channel_info(priv, band, channel);
if (!is_channel_valid(ch_info))
return false;
if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
return !(ch_info->ht40_extension_channel &
IEEE80211_CHAN_NO_HT40PLUS);
else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
return !(ch_info->ht40_extension_channel &
IEEE80211_CHAN_NO_HT40MINUS);
return false;
}
bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_sta_ht_cap *ht_cap)
@ -210,9 +190,7 @@ bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
return false;
#endif
return iwl_is_channel_extension(priv, priv->band,
le16_to_cpu(ctx->staging.channel),
ctx->ht.extension_chan_offset);
return true;
}
static void iwl_sta_calc_ht_flags(struct iwl_priv *priv,