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-rw-r--r--package/kernel/mac80211/patches/312-ath9k-Fix-offchannel-flush-timeout.patch43
1 files changed, 43 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/312-ath9k-Fix-offchannel-flush-timeout.patch b/package/kernel/mac80211/patches/312-ath9k-Fix-offchannel-flush-timeout.patch
new file mode 100644
index 0000000000..0a4257d8a1
--- /dev/null
+++ b/package/kernel/mac80211/patches/312-ath9k-Fix-offchannel-flush-timeout.patch
@@ -0,0 +1,43 @@
+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) {