Re: [PATCH v3 4/6] hw/vfio/ccw: Replace DO_UPCAST(S390CCWDevice) by S390_CCW_DEVICE()

[Philippe Mathieu-Daudé]

On 13/2/23 18:01, Philippe Mathieu-Daudé wrote:
> Use the S390_CCW_DEVICE() QOM type-checking macro to avoid DO_UPCAST().

I forgot Eric R-b here:
Reviewed-by: Eric Farman <farman@linux.ibm.com>

> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/vfio/ccw.c | 9 +++------
>   1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
> index 2c20e3c202..2ea7b4a63c 100644
> --- a/hw/vfio/ccw.c
> +++ b/hw/vfio/ccw.c
> @@ -251,8 +251,7 @@ 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);
> +    S390CCWDevice *cdev = S390_CCW_DEVICE(dev);
>       VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
>   
>       ioctl(vcdev->vdev.fd, VFIO_DEVICE_RESET);
> @@ -657,8 +656,7 @@ static VFIOGroup *vfio_ccw_get_group(S390CCWDevice *cdev, 
> Error **errp)
>   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);
> +    S390CCWDevice *cdev = S390_CCW_DEVICE(dev);
>       VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
>       S390CCWDeviceClass *cdc = S390_CCW_DEVICE_GET_CLASS(cdev);
>       Error *err = NULL;
> @@ -729,8 +727,7 @@ 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);
> +    S390CCWDevice *cdev = S390_CCW_DEVICE(dev);
>       VFIOCCWDevice *vcdev = DO_UPCAST(VFIOCCWDevice, cdev, cdev);
>       S390CCWDeviceClass *cdc = S390_CCW_DEVICE_GET_CLASS(cdev);
>       VFIOGroup *group = vcdev->vdev.group;