linux-kernel - [PATCH 3.19.y-ckt 102/155] iwlwifi: mvm: clear csa countdown when AP is stopped

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Message-Id: <1447370309-357-103-git-send-email-kamal@canonical.com>
Date:	Thu, 12 Nov 2015 15:17:36 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Avraham Stern <avraham.stern@...el.com>,
	Luca Coelho <luciano.coelho@...el.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 102/155] iwlwifi: mvm: clear csa countdown when AP is stopped

3.19.8-ckt10 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Avraham Stern <avraham.stern@...el.com>

commit e9cb0327b26dd7ba43a3b7a05b4b62219decf42d upstream.

The csa_countdown flag was not cleared when the AP is stopped.
As a result, if the AP was stopped after csa_countdown had started,
all the folowing channel switch commands would fail.
Fix that by clearing the csa_countdown flag when the AP is stopped.

Signed-off-by: Avraham Stern <avraham.stern@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/net/wireless/iwlwifi/mvm/mac80211.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 7b0d757..ba2b6f5 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -1818,6 +1818,7 @@ static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
 		iwl_mvm_remove_time_event(mvm, mvmvif,
 					  &mvmvif->time_event_data);
 		RCU_INIT_POINTER(mvm->csa_vif, NULL);
+		mvmvif->csa_countdown = false;
 	}
 
 	if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
-- 
1.9.1

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