HID: hid-steam: Make client_opened a counter

The client_opened variable was used to track if the hidraw was opened by any
clients to silence keyboard/mouse events while opened. However, there was no
counting of how many clients were opened, so opening two at the same time and
then closing one would fool the driver into thinking it had no remaining opened
clients.

Signed-off-by: Vicki Pfau <vi@endrift.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Author: endrift

drivers/hid/hid-steam.c

@@ -125,7 +125,7 @@ struct steam_device {
 	spinlock_t lock;
 	struct hid_device *hdev, *client_hdev;
 	struct mutex report_mutex;
-	bool client_opened;
+	unsigned long client_opened;
 	struct input_dev __rcu *input;
 	unsigned long quirks;
 	struct work_struct work_connect;
@@ -648,7 +648,7 @@ static void steam_battery_unregister(struct steam_device *steam)
 static int steam_register(struct steam_device *steam)
 {
 	int ret;
-	bool client_opened;
+	unsigned long client_opened;
 	unsigned long flags;
 
 	/*
@@ -771,7 +771,7 @@ static int steam_client_ll_open(struct hid_device *hdev)
 	unsigned long flags;
 
 	spin_lock_irqsave(&steam->lock, flags);
-	steam->client_opened = true;
+	steam->client_opened++;
 	spin_unlock_irqrestore(&steam->lock, flags);
 
 	steam_input_unregister(steam);
@@ -787,7 +787,7 @@ static void steam_client_ll_close(struct hid_device *hdev)
 	bool connected;
 
 	spin_lock_irqsave(&steam->lock, flags);
-	steam->client_opened = false;
+	steam->client_opened--;
 	connected = steam->connected && !steam->client_opened;
 	spin_unlock_irqrestore(&steam->lock, flags);
 
@@ -959,7 +959,7 @@ static void steam_remove(struct hid_device *hdev)
 	cancel_work_sync(&steam->work_connect);
 	hid_destroy_device(steam->client_hdev);
 	steam->client_hdev = NULL;
-	steam->client_opened = false;
+	steam->client_opened = 0;
 	if (steam->quirks & STEAM_QUIRK_WIRELESS) {
 		hid_info(hdev, "Steam wireless receiver disconnected");
 	}