virtio_console: convert to use virtio_find_vqs_info()

Instead of passing separate names and callbacks arrays
to virtio_find_vqs(), allocate one of virtual_queue_info structs and
pass it to virtio_find_vqs_info().

Suggested-by: Xuan Zhuo <[email protected]>
Signed-off-by: Jiri Pirko <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

Author: Jiri Pirko

drivers/char/virtio_console.c

@@ -1804,8 +1804,7 @@ static void config_work_handler(struct work_struct *work)
 
 static int init_vqs(struct ports_device *portdev)
 {
-	vq_callback_t **io_callbacks;
-	char **io_names;
+	struct virtqueue_info *vqs_info;
 	struct virtqueue **vqs;
 	u32 i, j, nr_ports, nr_queues;
 	int err;
@@ -1814,15 +1813,12 @@ static int init_vqs(struct ports_device *portdev)
 	nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2;
 
 	vqs = kmalloc_array(nr_queues, sizeof(struct virtqueue *), GFP_KERNEL);
-	io_callbacks = kmalloc_array(nr_queues, sizeof(vq_callback_t *),
-				     GFP_KERNEL);
-	io_names = kmalloc_array(nr_queues, sizeof(char *), GFP_KERNEL);
+	vqs_info = kcalloc(nr_queues, sizeof(*vqs_info), GFP_KERNEL);
 	portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),
 					GFP_KERNEL);
 	portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *),
 					 GFP_KERNEL);
-	if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs ||
-	    !portdev->out_vqs) {
+	if (!vqs || !vqs_info || !portdev->in_vqs || !portdev->out_vqs) {
 		err = -ENOMEM;
 		goto free;
 	}
@@ -1833,30 +1829,28 @@ static int init_vqs(struct ports_device *portdev)
 	 * 0 before others.
 	 */
 	j = 0;
-	io_callbacks[j] = in_intr;
-	io_callbacks[j + 1] = out_intr;
-	io_names[j] = "input";
-	io_names[j + 1] = "output";
+	vqs_info[j].callback = in_intr;
+	vqs_info[j + 1].callback = out_intr;
+	vqs_info[j].name = "input";
+	vqs_info[j + 1].name = "output";
 	j += 2;
 
 	if (use_multiport(portdev)) {
-		io_callbacks[j] = control_intr;
-		io_callbacks[j + 1] = NULL;
-		io_names[j] = "control-i";
-		io_names[j + 1] = "control-o";
+		vqs_info[j].callback = control_intr;
+		vqs_info[j].name = "control-i";
+		vqs_info[j + 1].name = "control-o";
 
 		for (i = 1; i < nr_ports; i++) {
 			j += 2;
-			io_callbacks[j] = in_intr;
-			io_callbacks[j + 1] = out_intr;
-			io_names[j] = "input";
-			io_names[j + 1] = "output";
+			vqs_info[j].callback = in_intr;
+			vqs_info[j + 1].callback = out_intr;
+			vqs_info[j].name = "input";
+			vqs_info[j + 1].name = "output";
 		}
 	}
 	/* Find the queues. */
-	err = virtio_find_vqs(portdev->vdev, nr_queues, vqs,
-			      io_callbacks,
-			      (const char **)io_names, NULL);
+	err = virtio_find_vqs_info(portdev->vdev, nr_queues, vqs,
+				   vqs_info, NULL);
 	if (err)
 		goto free;
 
@@ -1874,17 +1868,15 @@ static int init_vqs(struct ports_device *portdev)
 			portdev->out_vqs[i] = vqs[j + 1];
 		}
 	}
-	kfree(io_names);
-	kfree(io_callbacks);
+	kfree(vqs_info);
 	kfree(vqs);
 
 	return 0;
 
 free:
 	kfree(portdev->out_vqs);
 	kfree(portdev->in_vqs);
-	kfree(io_names);
-	kfree(io_callbacks);
+	kfree(vqs_info);
 	kfree(vqs);
 
 	return err;