From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Thu, 11 Sep 2014 13:35:48 +0000 (+0530)
Subject: Revert "ath9k: Calculate sleep duration"
X-Git-Tag: fixes-for-v3.18-merge-window~87^2~35^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae0fd6354134e63aa3e62456e2080c430287144d;p=pandora-kernel.git

Revert "ath9k: Calculate sleep duration"

This reverts commit 09ebb810927a110e4c354beb20308830d108a54b.

ath9k_hw_set_sta_beacon_timers() configures AR_TIM_PERIOD with
the beacon interval. Before this commit, the sleepduration was
never greater than the beacon interval. But now, the behavior
has changed. For example, with an AP that uses a beacon interval of 100:

ath: phy9: next beacon 61128704
ath: phy9: beacon period 204800
ath: phy9: DTIM period 204800

If the sleepduration is calculated based on the listen time, then
the bmiss threshold should also be changed since the HW would
be in sleep state for a longer time, but that is not done currently.

To avoid configuring a higher beacon interval based on the sleepduration,
revert to the original behavior. Power consumption is not a
problem since PS is disabled in ath9k anyway.

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

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