[PATCH v5 04/10] vfio: Mark cdev usage in vfio_device

[Yi Liu <yi.l.liu@intel.com>]

Use it to differentiate whether to report group_id or devid in the revised
VFIO_DEVICE_GET_PCI_HOT_RESET_INFO ioctl. At this moment, no cdev path yet,
so the vfio_device_cdev_opened() helper always returns false.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
 include/linux/vfio.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index 16fd04490550..a61130bc06a2 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -140,6 +140,11 @@ int vfio_iommufd_emulated_attach_ioas(struct vfio_device *vdev, u32 *pt_id);
 	((int (*)(struct vfio_device *vdev, u32 *pt_id)) NULL)
 #endif
 
+static inline bool vfio_device_cdev_opened(struct vfio_device *device)
+{
+	return false;
+}
+
 /**
  * struct vfio_migration_ops - VFIO bus device driver migration callbacks
  *
-- 
2.34.1