In case we will get ROC cancel from mac80211 we
should not call ieee80211_remain_on_channel_expired().
In other case I hit such warning on MIPS and
p2p negotiation failed (tested with use_chanctx=1).
ath: phy0: Starting RoC period
ath: phy0: Channel definition created: 2412 MHz
ath: phy0: Assigned next_chan to 2412 MHz
ath: phy0: Offchannel duration for chan 2412 MHz : 506632
ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz
ath: phy0: Stopping current chanctx: 2412
ath: phy0: Flush timeout: 200
ath: phy0: ath_chanctx_set_next: Set channel 2412 MHz
ath: phy0: Set channel: 2412 MHz width: 0
ath: phy0: Reset to 2412 MHz, HT40: 0 fastcc: 0
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_TSF_TIMER, state:
ATH_CHANCTX_STATE_IDLE
ath: phy0: ath_offchannel_channel_change: offchannel state:
ATH_OFFCHANNEL_ROC_START
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state:
ATH_CHANCTX_STATE_IDLE
ath: phy0: Cancel RoC
ath: phy0: RoC aborted
ath: phy0: RoC request on vif: 00:03:7f:4e:a0:cd, type: 1 duration: 500
ath: phy0: Starting RoC period
ath: phy0: Channel definition created: 2412 MHz
ath: phy0: Assigned next_chan to 2412 MHz
ath: phy0: Offchannel duration for chan 2412 MHz : 506705
ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz
ath: phy0: ath_offchannel_channel_change: offchannel state:
ATH_OFFCHANNEL_ROC_START
ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state:
ATH_CHANCTX_STATE_IDLE
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3312 at drivers/net/wireless/ath/ath9k/main.c:2319
Modules linked in: ath9k ath9k_common ath9k_hw ath mac80211 cfg80211
Signed-off-by: Janusz Dziedzic <janusz.dzied...@tieto.com>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 8 +++++++-
drivers/net/wireless/ath/ath9k/channel.c | 23 ++++++++++++++++-------
drivers/net/wireless/ath/ath9k/main.c | 4 ++--
3 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h
b/drivers/net/wireless/ath/ath9k/ath9k.h
index 030fd0f..7d41c8f 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -409,6 +409,12 @@ enum ath_offchannel_state {
ATH_OFFCHANNEL_ROC_DONE,
};
+enum ath_roc_complete_reason {
+ ATH_ROC_COMPLETE_EXPIRE,
+ ATH_ROC_COMPLETE_ABORT,
+ ATH_ROC_COMPLETE_CANCEL,
+};
+
struct ath_offchannel {
struct ath_chanctx chan;
struct timer_list timer;
@@ -470,7 +476,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct
ieee80211_vif *vif,
void ath_chanctx_set_next(struct ath_softc *sc, bool force);
void ath_offchannel_next(struct ath_softc *sc);
void ath_scan_complete(struct ath_softc *sc, bool abort);
-void ath_roc_complete(struct ath_softc *sc, bool abort);
+void ath_roc_complete(struct ath_softc *sc, enum ath_roc_complete_reason
reason);
struct ath_chanctx* ath_is_go_chanctx_present(struct ath_softc *sc);
#else
diff --git a/drivers/net/wireless/ath/ath9k/channel.c
b/drivers/net/wireless/ath/ath9k/channel.c
index 2066650..35cfcd0 100644
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -915,18 +915,27 @@ void ath_offchannel_next(struct ath_softc *sc)
}
}
-void ath_roc_complete(struct ath_softc *sc, bool abort)
+void ath_roc_complete(struct ath_softc *sc, enum ath_roc_complete_reason
reason)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- if (abort)
+ sc->offchannel.roc_vif = NULL;
+ sc->offchannel.roc_chan = NULL;
+
+ switch(reason) {
+ case ATH_ROC_COMPLETE_ABORT:
ath_dbg(common, CHAN_CTX, "RoC aborted\n");
- else
+ ieee80211_remain_on_channel_expired(sc->hw);
+ break;
+ case ATH_ROC_COMPLETE_EXPIRE:
ath_dbg(common, CHAN_CTX, "RoC expired\n");
+ ieee80211_remain_on_channel_expired(sc->hw);
+ break;
+ case ATH_ROC_COMPLETE_CANCEL:
+ ath_dbg(common, CHAN_CTX, "RoC canceled\n");
+ break;
+ }
- sc->offchannel.roc_vif = NULL;
- sc->offchannel.roc_chan = NULL;
- ieee80211_remain_on_channel_expired(sc->hw);
ath_offchannel_next(sc);
ath9k_ps_restore(sc);
}
@@ -1058,7 +1067,7 @@ static void ath_offchannel_timer(unsigned long data)
case ATH_OFFCHANNEL_ROC_START:
case ATH_OFFCHANNEL_ROC_WAIT:
sc->offchannel.state = ATH_OFFCHANNEL_ROC_DONE;
- ath_roc_complete(sc, false);
+ ath_roc_complete(sc, ATH_ROC_COMPLETE_EXPIRE);
break;
default:
break;
diff --git a/drivers/net/wireless/ath/ath9k/main.c
b/drivers/net/wireless/ath/ath9k/main.c
index 945f002..2277e09 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2244,7 +2244,7 @@ static void ath9k_cancel_pending_offchannel(struct
ath_softc *sc)
del_timer_sync(&sc->offchannel.timer);
if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START)
- ath_roc_complete(sc, true);
+ ath_roc_complete(sc, ATH_ROC_COMPLETE_ABORT);
}
if (test_bit(ATH_OP_SCANNING, &common->op_flags)) {
@@ -2353,7 +2353,7 @@ static int ath9k_cancel_remain_on_channel(struct
ieee80211_hw *hw)
if (sc->offchannel.roc_vif) {
if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START)
- ath_roc_complete(sc, true);
+ ath_roc_complete(sc, ATH_ROC_COMPLETE_CANCEL);
}
mutex_unlock(&sc->mutex);
--
1.9.1
--
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