2013-06-01 01:40:54

by Sujith Manoharan

[permalink] [raw]
Subject: [PATCH] ath9k: Disable PowerSave by default

From: Sujith Manoharan <[email protected]>

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

Cc: [email protected]
Signed-off-by: Sujith Manoharan <[email protected]>
drivers/net/wireless/ath/ath9k/init.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index f908dc1..9fc4d67 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -790,8 +790,7 @@ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
hw->wiphy->iface_combinations = if_comb;
hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);

- 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;