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iwlwifi: fix 40MHz operation setting on cards that do not allow it
Some devices have 40MHz operation disabled entirely. Ensure that driver do not enable 40MHz operation if a channel does not allow this. This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2135 Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> CC: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -749,7 +749,8 @@ static int iwl_mod_ht40_chan_info(struct iwl_priv *priv,
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ch_info->ht40_eeprom = *eeprom_ch;
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ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
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ch_info->ht40_flags = eeprom_ch->flags;
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ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
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if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
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ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
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return 0;
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}
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