wilc1000: move 'deinit_lock' lock init/destroy inside module probe

Move initialization & deinitialization of 'deinit_lock' mutex lock inside
wlan_init_locks() & wlan_deinit_locks() API's respectively alongside other
locks. After the movement, the client count variable(client_count) which is
used for lock init/deinit is removed.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210916164902.74629-2-ajay.kathat@microchip.com

drivers/net/wireless/microchip/wilc1000/cfg80211.c

@@ -1683,6 +1683,7 @@ static void wlan_init_locks(struct wilc *wl)
 	mutex_init(&wl->rxq_cs);
 	mutex_init(&wl->cfg_cmd_lock);
 	mutex_init(&wl->vif_mutex);
+	mutex_init(&wl->deinit_lock);
 
 	spin_lock_init(&wl->txq_spinlock);
 	mutex_init(&wl->txq_add_to_head_cs);
@@ -1701,6 +1702,7 @@ void wlan_deinit_locks(struct wilc *wilc)
 	mutex_destroy(&wilc->cfg_cmd_lock);
 	mutex_destroy(&wilc->txq_add_to_head_cs);
 	mutex_destroy(&wilc->vif_mutex);
+	mutex_destroy(&wilc->deinit_lock);
 	cleanup_srcu_struct(&wilc->srcu);
 }
 

drivers/net/wireless/microchip/wilc1000/hif.c

@@ -1494,7 +1494,6 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler)
 {
 	struct host_if_drv *hif_drv;
 	struct wilc_vif *vif = netdev_priv(dev);
-	struct wilc *wilc = vif->wilc;
 
 	hif_drv  = kzalloc(sizeof(*hif_drv), GFP_KERNEL);
 	if (!hif_drv)
@@ -1504,9 +1503,6 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler)
 
 	vif->hif_drv = hif_drv;
 
-	if (wilc->clients_count == 0)
-		mutex_init(&wilc->deinit_lock);
-
 	timer_setup(&vif->periodic_rssi, get_periodic_rssi, 0);
 	mod_timer(&vif->periodic_rssi, jiffies + msecs_to_jiffies(5000));
 
@@ -1518,8 +1514,6 @@ int wilc_init(struct net_device *dev, struct host_if_drv **hif_drv_handler)
 
 	hif_drv->p2p_timeout = 0;
 
-	wilc->clients_count++;
-
 	return 0;
 }
 
@@ -1550,7 +1544,6 @@ int wilc_deinit(struct wilc_vif *vif)
 
 	kfree(hif_drv);
 	vif->hif_drv = NULL;
-	vif->wilc->clients_count--;
 	mutex_unlock(&vif->wilc->deinit_lock);
 	return result;
 }

drivers/net/wireless/microchip/wilc1000/netdev.h

@@ -264,7 +264,6 @@ struct wilc {
 	struct device *dev;
 	bool suspend_event;
 
-	int clients_count;
 	struct workqueue_struct *hif_workqueue;
 	enum chip_ps_states chip_ps_state;
 	struct wilc_cfg cfg;