Re: [PATCH v5 06/10] hw/vfio: create common module

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> +int vfio_get_device(VFIOGroup *group, const char *name,
> +                       VFIODevice *vbasedev)
> +{
> +    struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
> +    struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
> +    struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
> +    int ret;
> +
> +    ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, name);
> +    if (ret < 0) {
Should be:
if(ret) {
instead of:
if (ret < 0) {

The ioctl can, and sometimes does, return positive values in case of
errors.  This should also be fixed in vfio_container_do_ioctl()


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