staging: wilc1000: avoid use of 'hif_deinit_lock' static variable

Avoid use of static variable 'hif_deinit_lock' and move it as part of
wilc struct.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -130,8 +130,6 @@ struct wilc_join_bss_param {
 	};
 } __packed;
 
-static struct mutex hif_deinit_lock;
-
 /* 'msg' should be free by the caller for syc */
 static struct host_if_msg*
 wilc_alloc_work(struct wilc_vif *vif, void (*work_fun)(struct work_struct *),
@@ -1645,7 +1643,7 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler)
 	vif->obtaining_ip = false;
 
 	if (wilc->clients_count == 0)
-		mutex_init(&hif_deinit_lock);
+		mutex_init(&wilc->deinit_lock);
 
 	timer_setup(&vif->periodic_rssi, get_periodic_rssi, 0);
 	mod_timer(&vif->periodic_rssi, jiffies + msecs_to_jiffies(5000));
@@ -1673,7 +1671,7 @@ int wilc_deinit(struct wilc_vif *vif)
 		return -EFAULT;
 	}
 
-	mutex_lock(&hif_deinit_lock);
+	mutex_lock(&vif->wilc->deinit_lock);
 
 	del_timer_sync(&hif_drv->scan_timer);
 	del_timer_sync(&hif_drv->connect_timer);
@@ -1693,7 +1691,7 @@ int wilc_deinit(struct wilc_vif *vif)
 	kfree(hif_drv);
 	vif->hif_drv = NULL;
 	vif->wilc->clients_count--;
-	mutex_unlock(&hif_deinit_lock);
+	mutex_unlock(&vif->wilc->deinit_lock);
 	return result;
 }
 
@@ -1746,31 +1744,31 @@ void wilc_gnrl_async_info_received(struct wilc *wilc, u8 *buffer, u32 length)
 	struct host_if_drv *hif_drv;
 	struct wilc_vif *vif;
 
-	mutex_lock(&hif_deinit_lock);
+	mutex_lock(&wilc->deinit_lock);
 
 	id = get_unaligned_le32(&buffer[length - 4]);
 	vif = wilc_get_vif_from_idx(wilc, id);
 	if (!vif) {
-		mutex_unlock(&hif_deinit_lock);
+		mutex_unlock(&wilc->deinit_lock);
 		return;
 	}
 
 	hif_drv = vif->hif_drv;
 
 	if (!hif_drv) {
-		mutex_unlock(&hif_deinit_lock);
+		mutex_unlock(&wilc->deinit_lock);
 		return;
 	}
 
 	if (!hif_drv->conn_info.conn_result) {
 		netdev_err(vif->ndev, "%s: conn_result is NULL\n", __func__);
-		mutex_unlock(&hif_deinit_lock);
+		mutex_unlock(&wilc->deinit_lock);
 		return;
 	}
 
 	msg = wilc_alloc_work(vif, handle_rcvd_gnrl_async_info, false);
 	if (IS_ERR(msg)) {
-		mutex_unlock(&hif_deinit_lock);
+		mutex_unlock(&wilc->deinit_lock);
 		return;
 	}
 
@@ -1781,7 +1779,7 @@ void wilc_gnrl_async_info_received(struct wilc *wilc, u8 *buffer, u32 length)
 		kfree(msg);
 	}
 
-	mutex_unlock(&hif_deinit_lock);
+	mutex_unlock(&wilc->deinit_lock);
 }
 
 void wilc_scan_complete_received(struct wilc *wilc, u8 *buffer, u32 length)

drivers/staging/wilc1000/wilc_wfi_netdevice.h

@@ -271,6 +271,8 @@ struct wilc {
 	struct wilc_cfg cfg;
 	void *bus_data;
 	struct net_device *monitor_dev;
+	/* deinit lock */
+	struct mutex deinit_lock;
 };
 
 struct wilc_wfi_mon_priv {