This is a note to let you know that I've just added the patch titled
ath9k_hw: revert chainmask to user configuration after calibration
to the 3.4-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-revert-chainmask-to-user-configuration-after-calibration.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 74632d11a133b5baf6b9d622dd19d2f944d93d94 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Fri, 15 Mar 2013 14:53:31 +0100
Subject: ath9k_hw: revert chainmask to user configuration after calibration
From: Felix Fietkau <nbd@xxxxxxxxxxx>
commit 74632d11a133b5baf6b9d622dd19d2f944d93d94 upstream.
The commit 'ath9k_hw: fix calibration issues on chainmask that don't
include chain 0' changed the hardware chainmask to the chip chainmask
for the duration of the calibration, but the revert to user
configuration in the reset path runs too early.
That causes some issues with limiting the number of antennas (including
spurious failure in hardware-generated packets).
Fix this by reverting the chainmask after the essential parts of the
calibration that need the workaround, and before NF calibration is run.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Reported-by: Wojciech Dubowik <Wojciech.Dubowik@xxxxxxxxxxx>
Tested-by: Wojciech Dubowik <Wojciech.Dubowik@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_calib.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -938,6 +938,7 @@ static bool ar9003_hw_init_cal(struct at
AR_PHY_CL_TAB_1,
AR_PHY_CL_TAB_2 };
+ /* Use chip chainmask only for calibration */
ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
if (rtt) {
@@ -1085,6 +1086,9 @@ skip_tx_iqcal:
ar9003_hw_rtt_disable(ah);
}
+ /* Revert chainmask to runtime parameters */
+ ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
+
/* Initialize list pointers */
ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
ah->supp_cals = IQ_MISMATCH_CAL;
Patches currently in stable-queue which might be from nbd@xxxxxxxxxxx are
queue-3.4/ath9k_hw-revert-chainmask-to-user-configuration-after-calibration.patch
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