From: Senthil Balasubramanian Date: Thu, 16 Sep 2010 19:12:35 +0000 (-0400) Subject: ath9k: fix regression which prevents chip sleep after CAB data X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3fac6dfdcd2b893c22b20a03dd1bf1af8b627c4b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git ath9k: fix regression which prevents chip sleep after CAB data The patch: commit 293dc5dfdbcc16cde06e40a688394cc8ab083e48 Author: Gabor Juhos Date: Fri Jun 19 12:17:48 2009 +0200 ath9k: remove ath_rx_ps_back_to_sleep helper This helper only clears the SC_OP_WAIT_FOR_{BEACON,CAB} flags. Remove it and clear these flags directly in the approptiate places instead. Changes-licensed-under: ISC Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville introduced a regression which forgot to lift the beacon flag after we received all broadcast and multicast data. This meant we never went to sleep consuming about ~650mW on idle. This pretty much broke power save completely. This patch has fixes for stable kernels [2.6.32+]. Cc: stable@kernel.org Cc: Paul Stewart Cc: Sameer Nanda Cc: Gabor Juhos Cc: Amod Bodas Signed-off-by: Senthil Balasubramanian Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 007df33ab05e..c5e7af4f51ab 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -639,7 +639,7 @@ static void ath_rx_ps(struct ath_softc *sc, struct sk_buff *skb) * No more broadcast/multicast frames to be received at this * point. */ - sc->ps_flags &= ~PS_WAIT_FOR_CAB; + sc->ps_flags &= ~(PS_WAIT_FOR_CAB | PS_WAIT_FOR_BEACON); ath_print(common, ATH_DBG_PS, "All PS CAB frames received, back to sleep\n"); } else if ((sc->ps_flags & PS_WAIT_FOR_PSPOLL_DATA) &&