crypto: virtio - Wait for tasklet to complete on device remove

The scheduled tasklet needs to be executed on device remove.

Fixes: fed93fb6 ("crypto: virtio - Handle dataq logic with tasklet")
Signed-off-by: wangyangxin <wangyangxin1@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/virtio/virtio_crypto_core.c

@@ -500,12 +500,15 @@ static void virtcrypto_free_unused_reqs(struct virtio_crypto *vcrypto)
 static void virtcrypto_remove(struct virtio_device *vdev)
 {
 	struct virtio_crypto *vcrypto = vdev->priv;
+	int i;
 
 	dev_info(&vdev->dev, "Start virtcrypto_remove.\n");
 
 	flush_work(&vcrypto->config_work);
 	if (virtcrypto_dev_started(vcrypto))
 		virtcrypto_dev_stop(vcrypto);
+	for (i = 0; i < vcrypto->max_data_queues; i++)
+		tasklet_kill(&vcrypto->data_vq[i].done_task);
 	virtio_reset_device(vdev);
 	virtcrypto_free_unused_reqs(vcrypto);
 	virtcrypto_clear_crypto_engines(vcrypto);