From: Rajkumar Manoharan <rmanoharan@atheros.com>
To: <linux-wireless@vger.kernel.org>
Cc: Rajkumar Manoharan <rmanoharan@atheros.com>, Jack Lee <jlee@atheros.com>
Subject: [PATCH 1/2] ath9k_hw: Fix system hang when resuming from S3/S4
Date: Wed, 19 Jan 2011 21:17:42 +0530 [thread overview]
Message-ID: <1295452063-13828-1-git-send-email-rmanoharan@atheros.com> (raw)
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>
---
drivers/net/wireless/ath/ath9k/ar9002_hw.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9002_hw.c b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
index f8a7771..f44c84a 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
@@ -426,9 +426,8 @@ static void ar9002_hw_configpcipowersave(struct ath_hw *ah,
}
/* 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;
--
1.7.3.5
next reply other threads:[~2011-01-19 15:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-19 15:47 Rajkumar Manoharan [this message]
2011-01-19 15:47 ` [PATCH 2/2] ath9k: Fix power save usage count imbalance on deinit Rajkumar Manoharan
2011-01-19 19:24 ` Luis R. Rodriguez
2011-01-20 7:51 ` Rajkumar Manoharan
2011-01-20 23:02 ` Luis R. Rodriguez
2011-01-23 7:21 ` Rajkumar Manoharan
2011-01-25 0:03 ` Paul Stewart
2011-01-25 5:10 ` Rajkumar Manoharan
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