From: Yi Liu <yi.l.liu@intel.com>
Date: Tue, 18 Jul 2023 10:55:38 +0000 (-0700)
Subject: vfio: Mark cdev usage in vfio_device
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=af949759bad27934b6f242e8a3b1c394e09fb4a3;p=linux.git

vfio: Mark cdev usage in vfio_device

This can be used 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>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Yanting Jiang <yanting.jiang@intel.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Tested-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20230718105542.4138-7-yi.l.liu@intel.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index 2c137ea94a3e6..2a45853773a61 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -139,6 +139,11 @@ 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
  *