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iwlwifi: do not allow set tx power over channel power limit

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When setting tx power in sysfs, check against max channel tx power
limit instead of IWL_TX_POWER_TARGET_POWER_MAX.

Different devices have different max tx power limit; using
IWL_TX_POWER_TARGET_POWER_MAX can excess the limitaion and give wrong
information.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy 2009-08-21 13:34:15 -07:00 committed by John W. Linville
parent 02eec9c5a1
commit 08f2d58d0e
1 changed files with 4 additions and 4 deletions
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8
drivers/net/wireless/iwlwifi/iwl-core.c
View file

@ -1708,10 +1708,10 @@ int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
return -EINVAL;
}
if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
tx_power,
IWL_TX_POWER_TARGET_POWER_MAX);
if (tx_power > priv->tx_power_channel_lmt) {
IWL_WARN(priv,
"Requested user TXPOWER %d above upper limit %d.\n",
tx_power, priv->tx_power_channel_lmt);
return -EINVAL;
}