This is a note to let you know that I've just added the patch titled
ath9k_hw: fix power for the HT40 duplicate frames
to the 2.6.39-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath9k_hw-fix-power-for-the-ht40-duplicate-frames.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From cf3a03b9c99a0b2715741d116f50f513f545bb2d Mon Sep 17 00:00:00 2001
From: Luis R. Rodriguez <[email protected]>
Date: Wed, 4 May 2011 14:01:26 -0700
Subject: ath9k_hw: fix power for the HT40 duplicate frames
From: Luis R. Rodriguez <[email protected]>
commit cf3a03b9c99a0b2715741d116f50f513f545bb2d upstream.
With AR9003 at about ~ 10 feet from an AP that uses RTS / CTS you
will be able to associate but not not get data through given that
the power for the rates used was set too low. This increases the
power and permits data connectivity at longer distances from
access points when connected with HT40. Without this you will not
get any data through when associated to APs configured in HT40
at about more than 10 feet away.
Cc: Fiona Cain <[email protected]>
Cc: Zhen Xie <[email protected]>
Cc: Kathy Giori <[email protected]>
Cc: Neha Choksi <[email protected]>
Cc: Wayne Daniel <[email protected]>
Cc: Gaurav Jauhar <[email protected]>
Cc: Samira Naraghi <[email protected]>
CC: Ashok Chennupati <[email protected]>
Cc: Lance Zimmerman <[email protected]>
Signed-off-by: Luis R. Rodriguez <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3994,6 +3994,16 @@ static int ar9003_hw_tx_power_regwrite(s
POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 0)
);
+ /* Write the power for duplicated frames - HT40 */
+
+ /* dup40_cck (LSB), dup40_ofdm, ext20_cck, ext20_ofdm (MSB) */
+ REG_WRITE(ah, 0xa3e0,
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_6_24], 24) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 16) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_6_24], 8) |
+ POW_SM(pPwrArray[ALL_TARGET_LEGACY_1L_5L], 0)
+ );
+
/* Write the HT20 power per rate set */
/* 0/8/16 (LSB), 1-3/9-11/17-19, 4, 5 (MSB) */
Patches currently in stable-queue which might be from [email protected] are
_______________________________________________
stable mailing list
[email protected]
http://linux.kernel.org/mailman/listinfo/stable
