This is a note to let you know that I've just added the patch titled
ath9k: Disable PowerSave by default
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-disable-powersave-by-default.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 531671cb17af07281e6f28c1425f754346e65c41 Mon Sep 17 00:00:00 2001
From: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
Date: Sat, 1 Jun 2013 07:08:09 +0530
Subject: ath9k: Disable PowerSave by default
From: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
commit 531671cb17af07281e6f28c1425f754346e65c41 upstream.
Almost all the DMA issues which have plagued ath9k (in station mode)
for years are related to PS. Disabling PS usually "fixes" the user's
connection stablility. Reports of DMA problems are still trickling in
and are sitting in the kernel bugzilla. Until the PS code in ath9k is
given a thorough review, disbale it by default. The slight increase
in chip power consumption is a small price to pay for improved link
stability.
Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/init.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -671,8 +671,7 @@ void ath9k_set_hw_capab(struct ath_softc
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_MESH_POINT);
- if (AR_SREV_5416(sc->sc_ah))
- hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
+ hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
Patches currently in stable-queue which might be from c_manoha@xxxxxxxxxxxxxxxx are
queue-3.4/ath9k-disable-powersave-by-default.patch
queue-3.4/ath9k-use-minstrel-rate-control-by-default.patch
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