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iwlwifi: fix 40MHz operation setting on cards that do not allow it

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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>
This commit is contained in:
Reinette Chatre 2009-12-14 14:12:13 -08:00 committed by John W. Linville
parent dc57a303fa
commit 6c3069b1e7
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/iwlwifi/iwl-eeprom.c
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@ -749,7 +749,8 @@ static int iwl_mod_ht40_chan_info(struct iwl_priv *priv,
ch_info->ht40_eeprom = *eeprom_ch;
ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
ch_info->ht40_flags = eeprom_ch->flags;
ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
return 0;
}