package/mac80211/patches/404-ath9k-wake-up-the-chip-for-TSF-reset.patch

   1 From d2fa21debb4ea8c022b0fbed165eea821d19da9e Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Sat, 20 Jun 2009 23:57:22 +0200
   4 Subject: [PATCH] ath9k: wake up the chip for TSF reset
   5
   6 If we are in NETWORK SLEEP state, AR_SLP32_TSF_WRITE_STATUS limit
   7 always exceeds in 'ath9k_hw_reset_tsf', because reading of the
   8 AR_SLP3 register always return with the magic 0xdeadbeef value.
   9
  10 Changes-licensed-under: ISC
  11 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  12 ---
  13  drivers/net/wireless/ath/ath9k/hw.c |    2 ++
  14  1 files changed, 2 insertions(+), 0 deletions(-)
  15
  16 --- a/drivers/net/wireless/ath/ath9k/hw.c
  17 +++ b/drivers/net/wireless/ath/ath9k/hw.c
  18 @@ -3803,6 +3803,7 @@ void ath9k_hw_reset_tsf(struct ath_hw *a
  19  {
  20         int count;
  21
  22 +       ath9k_ps_wakeup(ah->ah_sc);
  23         count = 0;
  24         while (REG_READ(ah, AR_SLP32_MODE) & AR_SLP32_TSF_WRITE_STATUS) {
  25                 count++;
  26 @@ -3814,6 +3815,7 @@ void ath9k_hw_reset_tsf(struct ath_hw *a
  27                 udelay(10);
  28         }
  29         REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
  30 +       ath9k_ps_restore(ah->ah_sc);
  31  }
  32
  33  bool ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)