ath9k_hw: Fix system hang when resuming from S3/S4
authorRajkumar Manoharan <rmanoharan@atheros.com>
Thu, 27 Jan 2011 13:09:37 +0000 (18:39 +0530)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 28 Jan 2011 20:27:20 +0000 (15:27 -0500)
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: stable@kernel.org
Cc: Jack Lee <jlee@atheros.com>
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/ath/ath9k/ar9002_hw.c

index f8a7771faee287d4bd260e9b3064d2f4ddda6e4d..f44c84ab5dceddae414dfdec5f877e98bc0013e6 100644 (file)
@@ -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;