diff mbox series

[03/15] vfio: remove the iommudata check in vfio_noiommu_attach_group

Message ID 20210924155705.4258-4-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [01/15] vfio: Move vfio_iommu_group_get() to vfio_register_group_dev() | expand

Commit Message

Christoph Hellwig Sept. 24, 2021, 3:56 p.m. UTC
vfio_noiommu_attach_group has two callers:

 1) __vfio_container_attach_groups is called by vfio_ioctl_set_iommu,
    which just called vfio_iommu_driver_allowed
 2) vfio_group_set_container requires already checks ->noiommu on the
    vfio_group, which is propagated from the iommudata in
    vfio_create_group

so this check is entirely superflous and can be removed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
---
 drivers/vfio/vfio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index faf8e0d637bb94..8bd4b0b96b94a3 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -240,7 +240,7 @@  static long vfio_noiommu_ioctl(void *iommu_data,
 static int vfio_noiommu_attach_group(void *iommu_data,
 				     struct iommu_group *iommu_group)
 {
-	return iommu_group_get_iommudata(iommu_group) == &noiommu ? 0 : -EINVAL;
+	return 0;
 }
 
 static void vfio_noiommu_detach_group(void *iommu_data,