[PATCH 16/19] hw/vfio/ccw: Replace DO_UPCAST(VFIOCCWDevice) by VFIO_CCW()

[Philippe Mathieu-Daudé]

Use the VFIO_CCW() QOM type-checking macro to avoid DO_UPCAST().

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
 hw/vfio/ccw.c | 35 ++++++++++++++++-------------------
 1 file changed, 16 insertions(+), 19 deletions(-)

diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index 0354737666..a8aa5b48c4 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -76,8 +76,7 @@ struct VFIODeviceOps vfio_ccw_ops = {
 
 static IOInstEnding vfio_ccw_handle_request(SubchDev *sch)
 {
-    S390CCWDevice *cdev = sch->driver_data;
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(sch->driver_data);
     struct ccw_io_region *region = vcdev->io_region;
     int ret;
 
@@ -125,8 +124,7 @@ again:
 
 static IOInstEnding vfio_ccw_handle_store(SubchDev *sch)
 {
-    S390CCWDevice *cdev = sch->driver_data;
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(sch->driver_data);
     SCHIB *schib = &sch->curr_status;
     struct ccw_schib_region *region = vcdev->schib_region;
     SCHIB *s;
@@ -170,8 +168,7 @@ static IOInstEnding vfio_ccw_handle_store(SubchDev *sch)
 
 static int vfio_ccw_handle_clear(SubchDev *sch)
 {
-    S390CCWDevice *cdev = sch->driver_data;
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(sch->driver_data);
     struct ccw_cmd_region *region = vcdev->async_cmd_region;
     int ret;
 
@@ -210,8 +207,7 @@ again:
 
 static int vfio_ccw_handle_halt(SubchDev *sch)
 {
-    S390CCWDevice *cdev = sch->driver_data;
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(sch->driver_data);
     struct ccw_cmd_region *region = vcdev->async_cmd_region;
     int ret;
 
@@ -252,8 +248,8 @@ again:
 static void vfio_ccw_reset(DeviceState *dev)
 {
     CcwDevice *ccw_dev = DO_UPCAST(CcwDevice, parent_obj, dev);
-    S390CCWDevice *cdev = DO_UPCAST(S390CCWDevice, parent_obj, ccw_dev);
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    S390CCWDevice *cdev = S390_CCW_DEVICE(ccw_dev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(cdev);
 
     ioctl(vcdev->vdev.fd, VFIO_DEVICE_RESET);
 }
@@ -588,9 +584,10 @@ static void vfio_ccw_put_device(VFIOCCWDevice *vcdev)
 static void vfio_ccw_get_device(VFIOGroup *group, VFIOCCWDevice *vcdev,
                                 Error **errp)
 {
-    char *name = g_strdup_printf("%x.%x.%04x", vcdev->cdev.hostid.cssid,
-                                 vcdev->cdev.hostid.ssid,
-                                 vcdev->cdev.hostid.devid);
+    S390CCWDevice *cdev = S390_CCW_DEVICE(vcdev);
+    char *name = g_strdup_printf("%x.%x.%04x", cdev->hostid.cssid,
+                                 cdev->hostid.ssid,
+                                 cdev->hostid.devid);
     VFIODevice *vbasedev;
 
     QLIST_FOREACH(vbasedev, &group->device_list, next) {
@@ -611,14 +608,14 @@ static void vfio_ccw_get_device(VFIOGroup *group, 
VFIOCCWDevice *vcdev,
      */
     vcdev->vdev.ram_block_discard_allowed = true;
 
-    if (vfio_get_device(group, vcdev->cdev.mdevid, &vcdev->vdev, errp)) {
+    if (vfio_get_device(group, cdev->mdevid, &vcdev->vdev, errp)) {
         goto out_err;
     }
 
     vcdev->vdev.ops = &vfio_ccw_ops;
     vcdev->vdev.type = VFIO_DEVICE_TYPE_CCW;
     vcdev->vdev.name = name;
-    vcdev->vdev.dev = &vcdev->cdev.parent_obj.parent_obj;
+    vcdev->vdev.dev = &cdev->parent_obj.parent_obj;
 
     return;
 
@@ -657,9 +654,9 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
 {
     VFIOGroup *group;
     CcwDevice *ccw_dev = DO_UPCAST(CcwDevice, parent_obj, dev);
-    S390CCWDevice *cdev = DO_UPCAST(S390CCWDevice, parent_obj, ccw_dev);
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    S390CCWDevice *cdev = S390_CCW_DEVICE(ccw_dev);
     S390CCWDeviceClass *cdc = S390_CCW_DEVICE_GET_CLASS(cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(cdev);
     Error *err = NULL;
 
     /* Call the class init function for subchannel. */
@@ -729,9 +726,9 @@ out_err_propagate:
 static void vfio_ccw_unrealize(DeviceState *dev)
 {
     CcwDevice *ccw_dev = DO_UPCAST(CcwDevice, parent_obj, dev);
-    S390CCWDevice *cdev = DO_UPCAST(S390CCWDevice, parent_obj, ccw_dev);
-    VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
+    S390CCWDevice *cdev = S390_CCW_DEVICE(ccw_dev);
     S390CCWDeviceClass *cdc = S390_CCW_DEVICE_GET_CLASS(cdev);
+    VFIOCCWDevice *vcdev = VFIO_CCW(cdev);
     VFIOGroup *group = vcdev->vdev.group;
 
     vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_REQ_IRQ_INDEX);
-- 
2.38.1