diff mbox series

[V3,mlx5-next,08/13] vfio/pci_core: Make the region->release() function optional

Message ID 20211024083019.232813-9-yishaih@nvidia.com (mailing list archive)
State Superseded
Delegated to: Bjorn Helgaas
Headers show
Series Add mlx5 live migration driver | expand

Commit Message

Yishai Hadas Oct. 24, 2021, 8:30 a.m. UTC 
Make the region->release() function optional as in some cases there is
nothing to do by driver as part of it.

This is needed for coming patch from this series once we add
mlx5_vfio_pci driver to support live migration but we don't need a
migration release function.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/vfio/pci/vfio_pci_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c
index a03b5a99c2da..e581a327f90d 100644
--- a/drivers/vfio/pci/vfio_pci_core.c
+++ b/drivers/vfio/pci/vfio_pci_core.c
@@ -341,7 +341,8 @@  void vfio_pci_core_disable(struct vfio_pci_core_device *vdev)
 	vdev->virq_disabled = false;
 
 	for (i = 0; i < vdev->num_regions; i++)
-		vdev->region[i].ops->release(vdev, &vdev->region[i]);
+		if (vdev->region[i].ops->release)
+			vdev->region[i].ops->release(vdev, &vdev->region[i]);
 
 	vdev->num_regions = 0;
 	kfree(vdev->region);