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-rw-r--r--package/mac80211/patches/409-ath9k-fix-race-with-IEEE80211_CONF_PS-checks.patch109
1 files changed, 0 insertions, 109 deletions
diff --git a/package/mac80211/patches/409-ath9k-fix-race-with-IEEE80211_CONF_PS-checks.patch b/package/mac80211/patches/409-ath9k-fix-race-with-IEEE80211_CONF_PS-checks.patch
deleted file mode 100644
index 8aabe87f95..0000000000
--- a/package/mac80211/patches/409-ath9k-fix-race-with-IEEE80211_CONF_PS-checks.patch
+++ /dev/null
@@ -1,109 +0,0 @@
-From c96f9c17f71213a562ce20d85a7418d5549235cc Mon Sep 17 00:00:00 2001
-From: Gabor Juhos <juhosg@openwrt.org>
-Date: Fri, 24 Jul 2009 16:34:37 +0200
-Subject: [PATCH 1/2] ath9k: fix race with IEEE80211_CONF_PS checks
-
-There is a small window where the mac80211 changes the IEEE80211_CONF_PS
-flag, and then informs the driver about the change. We have a race
-condition if we are checking the flag in the same time. Avoid it by
-introducing a local variable, and using that instead of checking the
-IEEE80211_CONF_PS flag directly.
-
-This fix the problem reported by Luis:
-http://article.gmane.org/gmane.linux.kernel.wireless.general/34363
-
-Changes-licensed-under: ISC
-Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
----
- drivers/net/wireless/ath/ath9k/ath9k.h | 1 +
- drivers/net/wireless/ath/ath9k/hw.c | 17 +++++++----------
- drivers/net/wireless/ath/ath9k/hw.h | 1 -
- drivers/net/wireless/ath/ath9k/main.c | 8 ++++----
- 4 files changed, 12 insertions(+), 15 deletions(-)
-
---- a/drivers/net/wireless/ath/ath9k/ath9k.h
-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
-@@ -561,6 +561,7 @@ struct ath_softc {
- u32 keymax;
- DECLARE_BITMAP(keymap, ATH_KEYMAX);
- u8 splitmic;
-+ bool ps_enabled;
- unsigned long ps_usecount;
- enum ath9k_int imask;
- enum ath9k_ht_extprotspacing ht_extprotspacing;
---- a/drivers/net/wireless/ath/ath9k/hw.c
-+++ b/drivers/net/wireless/ath/ath9k/hw.c
-@@ -2793,10 +2793,8 @@ void ath9k_ps_wakeup(struct ath_softc *s
- if (++sc->ps_usecount != 1)
- goto unlock;
-
-- if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
-- sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
-+ if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
- ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
-- }
-
- unlock:
- spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
-@@ -2810,13 +2808,12 @@ void ath9k_ps_restore(struct ath_softc *
- if (--sc->ps_usecount != 0)
- goto unlock;
-
-- if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
-- !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
-- SC_OP_WAIT_FOR_CAB |
-- SC_OP_WAIT_FOR_PSPOLL_DATA |
-- SC_OP_WAIT_FOR_TX_ACK)))
-- ath9k_hw_setpower_nolock(sc->sc_ah,
-- sc->sc_ah->restore_mode);
-+ if (sc->ps_enabled &&
-+ !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
-+ SC_OP_WAIT_FOR_CAB |
-+ SC_OP_WAIT_FOR_PSPOLL_DATA |
-+ SC_OP_WAIT_FOR_TX_ACK)))
-+ ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
-
- unlock:
- spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
---- a/drivers/net/wireless/ath/ath9k/hw.h
-+++ b/drivers/net/wireless/ath/ath9k/hw.h
-@@ -418,7 +418,6 @@ struct ath_hw {
-
- enum nl80211_iftype opmode;
- enum ath9k_power_mode power_mode;
-- enum ath9k_power_mode restore_mode;
-
- struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
- struct ar5416Stats stats;
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -496,8 +496,7 @@ static void ath9k_tasklet(unsigned long
- if (status & ATH9K_INT_TX)
- ath_tx_tasklet(sc);
-
-- if ((status & ATH9K_INT_TSFOOR) &&
-- (sc->hw->conf.flags & IEEE80211_CONF_PS)) {
-+ if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
- /*
- * TSF sync does not look correct; remain awake to sync with
- * the next Beacon.
-@@ -2001,7 +2000,7 @@ static int ath9k_tx(struct ieee80211_hw
- goto exit;
- }
-
-- if (sc->hw->conf.flags & IEEE80211_CONF_PS) {
-+ if (sc->ps_enabled) {
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- /*
- * mac80211 does not set PM field for normal data frames, so we
-@@ -2270,8 +2269,9 @@ static int ath9k_config(struct ieee80211
- }
- ath9k_hw_setrxabort(sc->sc_ah, 1);
- }
-- ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
-+ sc->ps_enabled = true;
- } else {
-+ sc->ps_enabled = false;
- ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
- if (!(ah->caps.hw_caps &
- ATH9K_HW_CAP_AUTOSLEEP)) {