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Subject[019/289] ath9k: fix regression which prevents chip sleep after CAB data
2.6.36-stable review patch.  If anyone has any objections, please let us know.


From: Senthil Balasubramanian <>

commit 3fac6dfdcd2b893c22b20a03dd1bf1af8b627c4b upstream.

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: 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 <>
Signed-off-by: Greg Kroah-Hartman <>

drivers/net/wireless/ath/ath9k/recv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -631,7 +631,7 @@ static void ath_rx_ps(struct ath_softc *
* 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) &&

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