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From 4101e8dc540d19f1f6c24930629149191786e4cd Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Mon, 9 Sep 2013 16:48:59 +0300
Subject: [PATCH 27/75] wlcore: don't switch channels on disconnected STA vifs
Sending the FW a channel switch command on a disconnected vif may result
in a beacon loss event. Avoid this edge case.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
---
drivers/net/wireless/ti/wlcore/main.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -5179,6 +5179,10 @@ static void wl12xx_op_channel_switch(str
if (unlikely(wl->state == WLCORE_STATE_OFF)) {
wl12xx_for_each_wlvif_sta(wl, wlvif) {
struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
+
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
+ continue;
+
ieee80211_chswitch_done(vif, false);
}
goto out;
@@ -5194,6 +5198,9 @@ static void wl12xx_op_channel_switch(str
wl12xx_for_each_wlvif_sta(wl, wlvif) {
unsigned long delay_usec;
+ if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
+ continue;
+
ret = wl->ops->channel_switch(wl, wlvif, ch_switch);
if (ret)
goto out_sleep;
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