From: Sujith Manoharan Date: Sun, 16 Nov 2014 00:41:06 +0000 (+0530) Subject: ath9k: Clear offchannel state properly X-Git-Tag: firefly_0821_release~176^2~2717^2~28^2~69 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e21a1d8b2b92e78fca0b4ee48681aa03dd671f88;p=firefly-linux-kernel-4.4.55.git ath9k: Clear offchannel state properly When a pending roc or scan operation is cancelled, the offchannel operation is cleared, but the offchannel state in the main scheduler is not cleared. This causes problems since an active GO will try to process a stale offchannel request that was deferred earlier. Fix this by clearing the state when there is no pending offchannel (roc/scan) operation. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c index 1dadf6d77a82..ee76682cc058 100644 --- a/drivers/net/wireless/ath/ath9k/channel.c +++ b/drivers/net/wireless/ath/ath9k/channel.c @@ -900,6 +900,11 @@ void ath_offchannel_next(struct ath_softc *sc) sc->offchannel.state = ATH_OFFCHANNEL_ROC_START; ath_chanctx_offchan_switch(sc, sc->offchannel.roc_chan); } else { + spin_lock_bh(&sc->chan_lock); + sc->sched.offchannel_pending = false; + sc->sched.wait_switch = false; + spin_unlock_bh(&sc->chan_lock); + ath_chanctx_switch(sc, ath_chanctx_get_oper_chan(sc, false), NULL); sc->offchannel.state = ATH_OFFCHANNEL_IDLE;