diff options
| author | Vasanthakumar Thiagarajan <vasanth@atheros.com> | 2009-08-31 17:48:36 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-31 14:42:15 -0400 |
| commit | 1c29ce672fe817c208309eea0c1ff7bf76250f15 (patch) | |
| tree | 4f01db66751551ce2089faf67bb4fcb49c750d67 | |
| parent | 3107edbae8216a80920bed7f8d4ec2e6b62390f2 (diff) | |
ath9k: Do an AHB reset before doing RTC resetmaster-2009-08-31
Doing an RTC reset when DMA is active may corrupt memory,
make sure no DMA is active at this moment by doing an
AHB reset.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index e340dacc6ebe..71f27f324cea 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1712,8 +1712,15 @@ static bool ath9k_hw_set_reset_power_on(struct ath_hw *ah) REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT); + if (!AR_SREV_9100(ah)) + REG_WRITE(ah, AR_RC, AR_RC_AHB); + REG_WRITE(ah, AR_RTC_RESET, 0); udelay(2); + + if (!AR_SREV_9100(ah)) + REG_WRITE(ah, AR_RC, 0); + REG_WRITE(ah, AR_RTC_RESET, 1); if (!ath9k_hw_wait(ah, |