ath9k: Disable PowerSave by default

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.

Cc: stable@vger.kernel.org
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index aba415103f942e51d2a29553a33ebd3c9a6be960..47d3269b69d5a41750e4f71c29a8c6b5d2d7128a 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -787,8 +787,7 @@ 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;