Messages in this thread Patch in this message | | | Date | Tue, 15 Feb 2011 16:20:29 -0800 | From | Greg KH <> | Subject | [patch 061/176] ath9k_hw: Fix system hang when resuming from S3/S4 |
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2.6.36-stable review patch. If anyone has any objections, please let us know.
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From: Rajkumar Manoharan <rmanoharan@atheros.com>
commit 5b64aa72ead6f8be488d2be7af579f0d69fb7a6e upstream.
The bit 6 & 7 of AR_WA (0x4004) should be enabled only for the chips that are supporting L0s functionality while resuming back from S3/S4.
Enabling these bits for AR9280 is causing system hang within a few S3/S4-resume cycles.
Cc: Jack Lee <jlee@atheros.com> Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/wireless/ath/ath9k/ar9002_hw.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/ar9002_hw.c +++ b/drivers/net/wireless/ath/ath9k/ar9002_hw.c @@ -445,9 +445,8 @@ static void ar9002_hw_configpcipowersave } /* WAR for ASPM system hang */ - if (AR_SREV_9280(ah) || AR_SREV_9285(ah) || AR_SREV_9287(ah)) { + if (AR_SREV_9285(ah) || AR_SREV_9287(ah)) val |= (AR_WA_BIT6 | AR_WA_BIT7); - } if (AR_SREV_9285E_20(ah)) val |= AR_WA_BIT23;
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