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ath9k: merge a p2p powersave handling fix

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 41017
This commit is contained in:
Felix Fietkau
2014-06-05 14:55:03 +00:00
parent 236e7ee239
commit b7ce76b4b9
1 changed files with 61 additions and 0 deletions
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61
package/kernel/mac80211/patches/300-pending_work.patch
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@@ -1,3 +1,16 @@
commit 60ccc107c9b9fb732fdee1f76bb2dad44f0e1798
Author: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Date: Tue May 27 16:58:02 2014 +0530
ath9k: Fix deadlock while updating p2p beacon timer
pm_lock is taken twice while syncing HW TSF of p2p vif.
Fix this by taking the lock at caller side.
Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
commit f3831a4e3903dbc1a57d5df56deb6a143fd001bc commit f3831a4e3903dbc1a57d5df56deb6a143fd001bc
Author: Stanislaw Gruszka <sgruszka@redhat.com> Author: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Thu Jun 5 13:52:27 2014 +0200 Date: Thu Jun 5 13:52:27 2014 +0200
@@ -684,3 +697,51 @@ Date: Mon May 19 21:20:49 2014 +0200
ENTRY_OWNER_DEVICE_DATA, ENTRY_OWNER_DEVICE_DATA,
ENTRY_DATA_PENDING, ENTRY_DATA_PENDING,
ENTRY_DATA_IO_FAILED, ENTRY_DATA_IO_FAILED,
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1757,7 +1757,6 @@ out:
void ath9k_update_p2p_ps(struct ath_softc *sc, struct ieee80211_vif *vif)
{
struct ath_vif *avp = (void *)vif->drv_priv;
- unsigned long flags;
u32 tsf;
if (!sc->p2p_ps_timer)
@@ -1767,14 +1766,9 @@ void ath9k_update_p2p_ps(struct ath_soft
return;
sc->p2p_ps_vif = avp;
-
- spin_lock_irqsave(&sc->sc_pm_lock, flags);
- if (!(sc->ps_flags & PS_BEACON_SYNC)) {
- tsf = ath9k_hw_gettsf32(sc->sc_ah);
- ieee80211_parse_p2p_noa(&vif->bss_conf.p2p_noa_attr, &avp->noa, tsf);
- ath9k_update_p2p_ps_timer(sc, avp);
- }
- spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
+ tsf = ath9k_hw_gettsf32(sc->sc_ah);
+ ieee80211_parse_p2p_noa(&vif->bss_conf.p2p_noa_attr, &avp->noa, tsf);
+ ath9k_update_p2p_ps_timer(sc, avp);
}
static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
@@ -1791,6 +1785,7 @@ static void ath9k_bss_info_changed(struc
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_vif *avp = (void *)vif->drv_priv;
+ unsigned long flags;
int slottime;
ath9k_ps_wakeup(sc);
@@ -1853,7 +1848,10 @@ static void ath9k_bss_info_changed(struc
if (changed & BSS_CHANGED_P2P_PS) {
spin_lock_bh(&sc->sc_pcu_lock);
- ath9k_update_p2p_ps(sc, vif);
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
+ if (!(sc->ps_flags & PS_BEACON_SYNC))
+ ath9k_update_p2p_ps(sc, vif);
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
spin_unlock_bh(&sc->sc_pcu_lock);
}