virtio-serial: cleanup: use QOM casts.

As the virtio-serial-pci and virtio-serial-s390 are switched to the new
API, we can use QOM casts.
Signed-off-by: NKONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Tested-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: NAmit Shah <amit.shah@redhat.com>
Message-id: 1365512016-21944-7-git-send-email-fred.konrad@greensocs.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/char/virtio-serial-bus.c

@@ -53,7 +53,8 @@ static VirtIOSerialPort *find_port_by_vq(VirtIOSerial *vser, VirtQueue *vq)
 
 static bool use_multiport(VirtIOSerial *vser)
 {
-    return vser->vdev.guest_features & (1 << VIRTIO_CONSOLE_F_MULTIPORT);
+    VirtIODevice *vdev = VIRTIO_DEVICE(vser);
+    return vdev->guest_features & (1 << VIRTIO_CONSOLE_F_MULTIPORT);
 }
 
 static size_t write_to_port(VirtIOSerialPort *port,
@@ -83,7 +84,7 @@ static size_t write_to_port(VirtIOSerialPort *port,
         virtqueue_push(vq, &elem, len);
     }
 
-    virtio_notify(&port->vser->vdev, vq);
+    virtio_notify(VIRTIO_DEVICE(port->vser), vq);
     return offset;
 }
 
@@ -156,7 +157,7 @@ static void flush_queued_data(VirtIOSerialPort *port)
     if (!virtio_queue_ready(port->ovq)) {
         return;
     }
-    do_flush_queued_data(port, port->ovq, &port->vser->vdev);
+    do_flush_queued_data(port, port->ovq, VIRTIO_DEVICE(port->vser));
 }
 
 static size_t send_control_msg(VirtIOSerial *vser, void *buf, size_t len)
@@ -175,7 +176,7 @@ static size_t send_control_msg(VirtIOSerial *vser, void *buf, size_t len)
     memcpy(elem.in_sg[0].iov_base, buf, len);
 
     virtqueue_push(vq, &elem, len);
-    virtio_notify(&vser->vdev, vq);
+    virtio_notify(VIRTIO_DEVICE(vser), vq);
     return len;
 }
 
@@ -214,7 +215,7 @@ int virtio_serial_close(VirtIOSerialPort *port)
      * consume, reset the throttling flag and discard the data.
      */
     port->throttled = false;
-    discard_vq_data(port->ovq, &port->vser->vdev);
+    discard_vq_data(port->ovq, VIRTIO_DEVICE(port->vser));
 
     send_control_event(port->vser, port->id, VIRTIO_CONSOLE_PORT_OPEN, 0);
 
@@ -237,11 +238,12 @@ ssize_t virtio_serial_write(VirtIOSerialPort *port, const uint8_t *buf,
  */
 size_t virtio_serial_guest_ready(VirtIOSerialPort *port)
 {
+    VirtIODevice *vdev = VIRTIO_DEVICE(port->vser);
     VirtQueue *vq = port->ivq;
     unsigned int bytes;
 
     if (!virtio_queue_ready(vq) ||
-        !(port->vser->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK) ||
+        !(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) ||
         virtio_queue_empty(vq)) {
         return 0;
     }
@@ -391,7 +393,7 @@ static void control_out(VirtIODevice *vdev, VirtQueue *vq)
     uint8_t *buf;
     size_t len;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
 
     len = 0;
     buf = NULL;
@@ -424,7 +426,7 @@ static void handle_output(VirtIODevice *vdev, VirtQueue *vq)
     VirtIOSerial *vser;
     VirtIOSerialPort *port;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
     port = find_port_by_vq(vser, vq);
 
     if (!port || !port->host_connected) {
@@ -446,7 +448,7 @@ static uint32_t get_features(VirtIODevice *vdev, uint32_t features)
 {
     VirtIOSerial *vser;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
 
     if (vser->bus.max_nr_ports > 1) {
         features |= (1 << VIRTIO_CONSOLE_F_MULTIPORT);
@@ -459,7 +461,7 @@ static void get_config(VirtIODevice *vdev, uint8_t *config_data)
 {
     VirtIOSerial *vser;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
     memcpy(config_data, &vser->config, sizeof(struct virtio_console_config));
 }
 
@@ -491,7 +493,7 @@ static void set_status(VirtIODevice *vdev, uint8_t status)
     VirtIOSerial *vser;
     VirtIOSerialPort *port;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
     port = find_port_by_id(vser, 0);
 
     if (port && !use_multiport(port->vser)
@@ -513,19 +515,19 @@ static void vser_reset(VirtIODevice *vdev)
 {
     VirtIOSerial *vser;
 
-    vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+    vser = VIRTIO_SERIAL(vdev);
     guest_reset(vser);
 }
 
 static void virtio_serial_save(QEMUFile *f, void *opaque)
 {
-    VirtIOSerial *s = opaque;
+    VirtIOSerial *s = VIRTIO_SERIAL(opaque);
     VirtIOSerialPort *port;
     uint32_t nr_active_ports;
     unsigned int i, max_nr_ports;
 
     /* The virtio device */
-    virtio_save(&s->vdev, f);
+    virtio_save(VIRTIO_DEVICE(s), f);
 
     /* The config space */
     qemu_put_be16s(f, &s->config.cols);
@@ -576,7 +578,7 @@ static void virtio_serial_save(QEMUFile *f, void *opaque)
 static void virtio_serial_post_load_timer_cb(void *opaque)
 {
     uint32_t i;
-    VirtIOSerial *s = opaque;
+    VirtIOSerial *s = VIRTIO_SERIAL(opaque);
     VirtIOSerialPort *port;
     uint8_t host_connected;
     VirtIOSerialPortClass *vsc;
@@ -664,7 +666,7 @@ static int fetch_active_ports_list(QEMUFile *f, int version_id,
 
 static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
 {
-    VirtIOSerial *s = opaque;
+    VirtIOSerial *s = VIRTIO_SERIAL(opaque);
     uint32_t max_nr_ports, nr_active_ports, ports_map;
     unsigned int i;
     int ret;
@@ -674,7 +676,7 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
     }
 
     /* The virtio device */
-    ret = virtio_load(&s->vdev, f);
+    ret = virtio_load(VIRTIO_DEVICE(s), f);
     if (ret) {
         return ret;
     }
@@ -801,7 +803,7 @@ static void remove_port(VirtIOSerial *vser, uint32_t port_id)
     assert(port);
 
     /* Flush out any unconsumed buffers first */
-    discard_vq_data(port->ovq, &port->vser->vdev);
+    discard_vq_data(port->ovq, VIRTIO_DEVICE(port->vser));
 
     send_control_event(vser, port->id, VIRTIO_CONSOLE_PORT_REMOVE, 1);
 }
@@ -865,7 +867,7 @@ static int virtser_port_qdev_init(DeviceState *qdev)
     add_port(port->vser, port->id);
 
     /* Send an update to the guest about this new port added */
-    virtio_notify_config(&port->vser->vdev);
+    virtio_notify_config(VIRTIO_DEVICE(port->vser));
 
     return ret;
 }
@@ -952,11 +954,11 @@ static int virtio_serial_device_init(VirtIODevice *vdev)
      */
     mark_port_added(vser, 0);
 
-    vser->vdev.get_features = get_features;
-    vser->vdev.get_config = get_config;
-    vser->vdev.set_config = set_config;
-    vser->vdev.set_status = set_status;
-    vser->vdev.reset = vser_reset;
+    vdev->get_features = get_features;
+    vdev->get_config = get_config;
+    vdev->set_config = set_config;
+    vdev->set_status = set_status;
+    vdev->reset = vser_reset;
 
     vser->qdev = qdev;
 

include/hw/virtio/virtio-serial.h

@@ -192,7 +192,7 @@ typedef struct VirtIOSerialPostLoad {
 } VirtIOSerialPostLoad;
 
 struct VirtIOSerial {
-    VirtIODevice vdev;
+    VirtIODevice parent_obj;
 
     VirtQueue *c_ivq, *c_ovq;
     /* Arrays of ivqs and ovqs: one per port */