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From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Fri, 17 Oct 2014 07:40:17 +0530
Subject: [PATCH] ath9k: Fix offchannel flush timeout
An offchannel operation also needs to have
a flush timeout that doesn't exceed the NoA
absence duration of a GO context, so use
channel_switch_time. The first offchannel
operation is set a flush timeout of 10ms since
channel_switch_time will be zero.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
---
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -207,6 +207,26 @@ void ath_chanctx_check_active(struct ath
if (!ctx)
return;
+ if (ctx == &sc->offchannel.chan) {
+ spin_lock_bh(&sc->chan_lock);
+
+ if (likely(sc->sched.channel_switch_time))
+ ctx->flush_timeout =
+ usecs_to_jiffies(sc->sched.channel_switch_time);
+ else
+ ctx->flush_timeout =
+ msecs_to_jiffies(10);
+
+ spin_unlock_bh(&sc->chan_lock);
+
+ /*
+ * There is no need to iterate over the
+ * active/assigned channel contexts if
+ * the current context is offchannel.
+ */
+ return;
+ }
+
ictx = ctx;
list_for_each_entry(avp, &ctx->vifs, list) {
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