3 files changed, 17 insertions, 6 deletions

diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index e05b417..1d0ec57 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -382,7 +382,8 @@ mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 
 	adapter->if_ops.cleanup_if(adapter);
 
-	dev_kfree_skb_any(adapter->sleep_cfm);
+	if (adapter->sleep_cfm)
+		dev_kfree_skb_any(adapter->sleep_cfm);
 }
 
 /*
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 84be196..b728f54 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -822,7 +822,9 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
 			continue;
 
 		rtnl_lock();
-		mwifiex_del_virtual_intf(priv->wdev->wiphy, priv->netdev);
+		if (priv->wdev && priv->netdev)
+			mwifiex_del_virtual_intf(priv->wdev->wiphy,
+						 priv->netdev);
 		rtnl_unlock();
 	}
 
@@ -830,9 +832,11 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
 	if (!priv)
 		goto exit_remove;
 
-	wiphy_unregister(priv->wdev->wiphy);
-	wiphy_free(priv->wdev->wiphy);
-	kfree(priv->wdev);
+	if (priv->wdev) {
+		wiphy_unregister(priv->wdev->wiphy);
+		wiphy_free(priv->wdev->wiphy);
+		kfree(priv->wdev);
+	}
 
 	mwifiex_terminate_workqueue(adapter);
 
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index 470ca75..b0fbf5d 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -54,7 +54,7 @@ int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
 {
 	bool cancel_flag = false;
-	int status = adapter->cmd_wait_q.status;
+	int status;
 	struct cmd_ctrl_node *cmd_queued;
 
 	if (!adapter->cmd_queued)
@@ -79,6 +79,8 @@ int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
 		mwifiex_cancel_pending_ioctl(adapter);
 		dev_dbg(adapter->dev, "cmd cancel\n");
 	}
+
+	status = adapter->cmd_wait_q.status;
 	adapter->cmd_wait_q.status = 0;
 
 	return status;
@@ -240,6 +242,8 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 
 		if (!netif_queue_stopped(priv->netdev))
 			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
+		if (netif_carrier_ok(priv->netdev))
+			netif_carrier_off(priv->netdev);
 
 		/* Clear any past association response stored for
 		 * application retrieval */
@@ -271,6 +275,8 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 
 		if (!netif_queue_stopped(priv->netdev))
 			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
+		if (netif_carrier_ok(priv->netdev))
+			netif_carrier_off(priv->netdev);
 
 		if (!ret) {
 			dev_dbg(adapter->dev, "info: network found in scan"