diff options
author | Stanislaw Gruszka <sgruszka@redhat.com> | 2011-04-13 10:56:51 +0200 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-04-13 15:09:53 -0400 |
commit | 332704a51498a7e29aa92c19dc03f11f80b71bfe (patch) | |
tree | 27b15e8fda9c070784d820cc98fd5985a475e88e /drivers | |
parent | 50f6871218802be528961e24487f00c203a5c3c7 (diff) |
iwlegacy: fix tx_power initialization
priv->tx_power_next is not initialized to max supported power,
but instead default value is used, what cause errors like
[ 58.597834] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 58.597839] iwl3945 0000:03:00.0: Error setting Tx power (-22).
if maximum tx power read from the eeprom is smaller than default.
In consequence card is unable to initialize properly. Fix the problem
and cleanup tx power initialization.
Reported-and-tested-by: Robin Dong <hao.bigrat@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl-3945-hw.h | 2 | ||||
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl-4965-hw.h | 3 | ||||
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl-core.c | 17 | ||||
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl-eeprom.c | 7 | ||||
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl3945-base.c | 4 | ||||
-rw-r--r-- | drivers/net/wireless/iwlegacy/iwl4965-base.c | 6 |
6 files changed, 11 insertions, 28 deletions
diff --git a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h index 779d3cb86e2..5c3a68d3af1 100644 --- a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h +++ b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h @@ -74,8 +74,6 @@ /* RSSI to dBm */ #define IWL39_RSSI_OFFSET 95 -#define IWL_DEFAULT_TX_POWER 0x0F - /* * EEPROM related constants, enums, and structures. */ diff --git a/drivers/net/wireless/iwlegacy/iwl-4965-hw.h b/drivers/net/wireless/iwlegacy/iwl-4965-hw.h index 08b189c8472..fc6fa2886d9 100644 --- a/drivers/net/wireless/iwlegacy/iwl-4965-hw.h +++ b/drivers/net/wireless/iwlegacy/iwl-4965-hw.h @@ -804,9 +804,6 @@ struct iwl4965_scd_bc_tbl { #define IWL4965_DEFAULT_TX_RETRY 15 -/* Limit range of txpower output target to be between these values */ -#define IWL4965_TX_POWER_TARGET_POWER_MIN (0) /* 0 dBm: 1 milliwatt */ - /* EEPROM */ #define IWL4965_FIRST_AMPDU_QUEUE 10 diff --git a/drivers/net/wireless/iwlegacy/iwl-core.c b/drivers/net/wireless/iwlegacy/iwl-core.c index a209a0e76bf..2b08efb3b65 100644 --- a/drivers/net/wireless/iwlegacy/iwl-core.c +++ b/drivers/net/wireless/iwlegacy/iwl-core.c @@ -160,6 +160,7 @@ int iwl_legacy_init_geos(struct iwl_priv *priv) struct ieee80211_channel *geo_ch; struct ieee80211_rate *rates; int i = 0; + s8 max_tx_power = 0; if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { @@ -235,8 +236,8 @@ int iwl_legacy_init_geos(struct iwl_priv *priv) geo_ch->flags |= ch->ht40_extension_channel; - if (ch->max_power_avg > priv->tx_power_device_lmt) - priv->tx_power_device_lmt = ch->max_power_avg; + if (ch->max_power_avg > max_tx_power) + max_tx_power = ch->max_power_avg; } else { geo_ch->flags |= IEEE80211_CHAN_DISABLED; } @@ -249,6 +250,10 @@ int iwl_legacy_init_geos(struct iwl_priv *priv) geo_ch->flags); } + priv->tx_power_device_lmt = max_tx_power; + priv->tx_power_user_lmt = max_tx_power; + priv->tx_power_next = max_tx_power; + if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->cfg->sku & IWL_SKU_A) { IWL_INFO(priv, "Incorrectly detected BG card as ABG. " @@ -1124,11 +1129,11 @@ int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) if (!priv->cfg->ops->lib->send_tx_power) return -EOPNOTSUPP; - if (tx_power < IWL4965_TX_POWER_TARGET_POWER_MIN) { + /* 0 dBm mean 1 milliwatt */ + if (tx_power < 0) { IWL_WARN(priv, - "Requested user TXPOWER %d below lower limit %d.\n", - tx_power, - IWL4965_TX_POWER_TARGET_POWER_MIN); + "Requested user TXPOWER %d below 1 mW.\n", + tx_power); return -EINVAL; } diff --git a/drivers/net/wireless/iwlegacy/iwl-eeprom.c b/drivers/net/wireless/iwlegacy/iwl-eeprom.c index 04c5648027d..cb346d1a9ff 100644 --- a/drivers/net/wireless/iwlegacy/iwl-eeprom.c +++ b/drivers/net/wireless/iwlegacy/iwl-eeprom.c @@ -471,13 +471,6 @@ int iwl_legacy_init_channel_map(struct iwl_priv *priv) flags & EEPROM_CHANNEL_RADAR)) ? "" : "not "); - /* Set the tx_power_user_lmt to the highest power - * supported by any channel */ - if (eeprom_ch_info[ch].max_power_avg > - priv->tx_power_user_lmt) - priv->tx_power_user_lmt = - eeprom_ch_info[ch].max_power_avg; - ch_info++; } } diff --git a/drivers/net/wireless/iwlegacy/iwl3945-base.c b/drivers/net/wireless/iwlegacy/iwl3945-base.c index 28eb3d885ba..cc7ebcee60e 100644 --- a/drivers/net/wireless/iwlegacy/iwl3945-base.c +++ b/drivers/net/wireless/iwlegacy/iwl3945-base.c @@ -3825,10 +3825,6 @@ static int iwl3945_init_drv(struct iwl_priv *priv) priv->force_reset[IWL_FW_RESET].reset_duration = IWL_DELAY_NEXT_FORCE_FW_RELOAD; - - priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER; - priv->tx_power_next = IWL_DEFAULT_TX_POWER; - if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n", eeprom->version); diff --git a/drivers/net/wireless/iwlegacy/iwl4965-base.c b/drivers/net/wireless/iwlegacy/iwl4965-base.c index 91b3d8b9d7a..d484c367816 100644 --- a/drivers/net/wireless/iwlegacy/iwl4965-base.c +++ b/drivers/net/wireless/iwlegacy/iwl4965-base.c @@ -3140,12 +3140,6 @@ static int iwl4965_init_drv(struct iwl_priv *priv) iwl_legacy_init_scan_params(priv); - /* Set the tx_power_user_lmt to the lowest power level - * this value will get overwritten by channel max power avg - * from eeprom */ - priv->tx_power_user_lmt = IWL4965_TX_POWER_TARGET_POWER_MIN; - priv->tx_power_next = IWL4965_TX_POWER_TARGET_POWER_MIN; - ret = iwl_legacy_init_channel_map(priv); if (ret) { IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); |