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[3.8.y.z,extended,stable] Patch "ath9k: Disable PowerSave by default" has been added to staging queue

Message ID 1371234825-32393-1-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa June 14, 2013, 6:33 p.m. UTC 
This is a note to let you know that I have just added a patch titled

    ath9k: Disable PowerSave by default

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.3.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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From 85410742a795a884220e6537ac6094f6e97ffa70 Mon Sep 17 00:00:00 2001
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Sat, 1 Jun 2013 07:08:09 +0530
Subject: ath9k: Disable PowerSave by default

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@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/net/wireless/ath/ath9k/init.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
1.8.1.2
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Patch

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index f69ef5d..c4ef015 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -774,8 +774,7 @@  void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
 	hw->wiphy->iface_combinations = &if_comb;
 	hw->wiphy->n_iface_combinations = 1;

-	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;