From: Robin Dong <sanbai@xxxxxxxxxx>
When I build and run the kernel-2.6.39-rc2 on my laptop, my intel-3945-a/b/g wireless
card will not work and the dmesg is:
[ 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).
[ 58.598276] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 58.598279] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 94.064147] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 94.064152] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 94.064529] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 94.064533] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 133.892160] sky2 0000:02:00.0: eth1: disabling interface
[ 473.313935] sky2 0000:02:00.0: eth1: enabling interface
[ 473.314238] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 473.383740] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 473.383748] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 473.384146] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 473.384153] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 473.455655] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 473.455663] iwl3945 0000:03:00.0: Error setting Tx power (-22).
[ 473.456128] iwl3945 0000:03:00.0: Requested user TXPOWER 15 above upper limit 14.
[ 473.456134] iwl3945 0000:03:00.0: Error setting Tx power (-22).
It is weird the iwl3945 set txpower 15 above limit 14.
So I checked iwl4965 and iwl3945 driver and found out it will set
tx_power_next to 0 in "iwl4965_init_drv" but to 15 in "iwl3945_init_drv"
I change tx_power_next=0 in "iwl3945_init_drv", and my wireless card works.
Signed-off-by: Robin Dong <sanbai@xxxxxxxxxx>
---
drivers/net/wireless/iwlegacy/iwl-3945-hw.h | 2 +-
drivers/net/wireless/iwlegacy/iwl3945-base.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h index 779d3cb..21438ee 100644
--- a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h
+++ b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h
@@ -74,7 +74,7 @@
/* RSSI to dBm */
#define IWL39_RSSI_OFFSET 95
-#define IWL_DEFAULT_TX_POWER 0x0F
+#define IWL3945_TX_POWER_TARGET_POWER_MIN (0)
/*
* EEPROM related constants, enums, and structures.
diff --git a/drivers/net/wireless/iwlegacy/iwl3945-base.c b/drivers/net/wireless/iwlegacy/iwl3945-base.c
index 28eb3d8..91ed03b 100644
--- a/drivers/net/wireless/iwlegacy/iwl3945-base.c
+++ b/drivers/net/wireless/iwlegacy/iwl3945-base.c
@@ -3826,8 +3826,8 @@ static int iwl3945_init_drv(struct iwl_priv *priv)
IWL_DELAY_NEXT_FORCE_FW_RELOAD;
- priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
- priv->tx_power_next = IWL_DEFAULT_TX_POWER;
+ priv->tx_power_user_lmt = IWL3945_TX_POWER_TARGET_POWER_MIN;
+ priv->tx_power_next = IWL3945_TX_POWER_TARGET_POWER_MIN;
if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
--
1.7.1
--
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