lkml.org 
[lkml]   [2011]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[065/272] ath9k_hw: Fix system hang when resuming from S3/S4
2.6.37-stable review patch.  If anyone has any objections, please let us know.

------------------
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
@@ -444,9 +444,8 @@ 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;



\
 
 \ /
  Last update: 2011-02-16 02:45    [from the cache]
©2003-2011 Jasper Spaans