nfc: virtual_ncidev: Add variable to check if ndev is running

[platform/kernel/linux-starfive.git] / drivers / nfc / virtual_ncidev.c

diff --git a/drivers/nfc/virtual_ncidev.c b/drivers/nfc/virtual_ncidev.c
index b027be0..590b038 100644 (file)
--- a/drivers/nfc/virtual_ncidev.c
+++ b/drivers/nfc/virtual_ncidev.c
@@ -26,10 +26,14 @@ struct virtual_nci_dev {
        struct mutex mtx;
        struct sk_buff *send_buff;
        struct wait_queue_head wq;
+       bool running;
 };
 
 static int virtual_nci_open(struct nci_dev *ndev)
 {
+       struct virtual_nci_dev *vdev = nci_get_drvdata(ndev);
+
+       vdev->running = true;
        return 0;
 }
 
@@ -40,6 +44,7 @@ static int virtual_nci_close(struct nci_dev *ndev)
        mutex_lock(&vdev->mtx);
        kfree_skb(vdev->send_buff);
        vdev->send_buff = NULL;
+       vdev->running = false;
        mutex_unlock(&vdev->mtx);
 
        return 0;
@@ -50,7 +55,7 @@ static int virtual_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
        struct virtual_nci_dev *vdev = nci_get_drvdata(ndev);
 
        mutex_lock(&vdev->mtx);
-       if (vdev->send_buff) {
+       if (vdev->send_buff || !vdev->running) {
                mutex_unlock(&vdev->mtx);
                kfree_skb(skb);
                return -1;