staging: vt6656: use test_bit to check flags status

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/main_usb.c

@@ -591,7 +591,7 @@ static void vnt_stop(struct ieee80211_hw *hw)
 	/* clear all keys */
 	priv->key_entry_inuse = 0;
 
-	if ((priv->flags & DEVICE_FLAGS_UNPLUG) == false)
+	if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 		vnt_mac_shutdown(priv);
 
 	ieee80211_stop_queues(hw);

drivers/staging/vt6656/usbpipe.c

@@ -52,7 +52,7 @@ int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
 {
 	int status = 0;
 
-	if (priv->flags & DEVICE_FLAGS_DISCONNECTED)
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
 		return STATUS_FAILURE;
 
 	mutex_lock(&priv->usb_lock);
@@ -80,7 +80,7 @@ int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
 {
 	int status;
 
-	if (priv->flags & DEVICE_FLAGS_DISCONNECTED)
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
 		return STATUS_FAILURE;
 
 	mutex_lock(&priv->usb_lock);
@@ -289,7 +289,7 @@ int vnt_tx_context(struct vnt_private *priv,
 	int status;
 	struct urb *urb;
 
-	if (priv->flags & DEVICE_FLAGS_DISCONNECTED) {
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
 		context->in_use = false;
 		return STATUS_RESOURCES;
 	}

drivers/staging/vt6656/wcmd.c

@@ -97,7 +97,7 @@ void vnt_run_command(struct work_struct *work)
 	struct vnt_private *priv =
 		container_of(work, struct vnt_private, run_command_work.work);
 
-	if (priv->flags & DEVICE_FLAGS_DISCONNECTED)
+	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
 		return;
 
 	if (priv->cmd_running != true)