From: Jason Gunthorpe <jgg@xxxxxxxxxx>
[ Upstream commit f423fa1bc9fe1978e6b9f54927411b62cb43eb04 ]
When converting to directly create the vfio_device the mdev driver has to
put a vfio_register_emulated_iommu_dev() in the probe() and a pairing
vfio_unregister_group_dev() in the remove.
This was missed for gvt, add it.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 978cf586ac35 ("drm/i915/gvt: convert to use vfio_register_emulated_iommu_dev")
Reported-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/r/0-v1-013609965fe8+9d-vfio_gvt_unregister_jgg@xxxxxxxxxx
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> # v6.0 backport
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> # v6.0 backport
---
drivers/gpu/drm/i915/gvt/kvmgt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index e3cd58946477..de89946c4817 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1595,6 +1595,9 @@ static void intel_vgpu_remove(struct mdev_device *mdev)
if (WARN_ON_ONCE(vgpu->attached))
return;
+
+ vfio_unregister_group_dev(&vgpu->vfio_device);
+ vfio_uninit_group_dev(&vgpu->vfio_device);
intel_gvt_destroy_vgpu(vgpu);
}
