[68/83] ath9k: Disable PowerSave by default

From: Ben Hutchings
Date: Sun Jun 16 2013 - 18:15:45 EST

3.2.47-rc1 review patch. If anyone has any objections, please let me know.


From: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>

commit 73c79617596b89a3693ff0d89d42bcd5ddedcf15 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

Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
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
@@ -691,8 +691,7 @@ void ath9k_set_hw_capab(struct ath_softc

- 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;

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