diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-27 12:10:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-27 12:10:58 -0800 |
| commit | 3aebae061cea6f6627ab882a73de7b0b21af3127 (patch) | |
| tree | 4ea296a2b63b38e69e37434e7976b45cfc816c0d | |
| parent | 9d1d166f18f8f0f332573b8d2e28e5b3291f09c5 (diff) | |
| parent | bd00fdf198e2da475a2f4265a83686ab42d998a8 (diff) | |
Merge tag 'vfio-v4.10-rc6' of git://github.com/awilliam/linux-vfio
Pull VFIO fix from Alex Williamson:
"mdev IOMMU groups are not yet compatible with the powerpc SPAPR IOMMU
backend, detect and fail group attach (Greg Kurz)"
* tag 'vfio-v4.10-rc6' of git://github.com/awilliam/linux-vfio:
vfio/spapr: fail tce_iommu_attach_group() when iommu_data is null
| -rw-r--r-- | drivers/vfio/vfio_iommu_spapr_tce.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index c8823578a1b2..128d10282d16 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -1270,6 +1270,10 @@ static int tce_iommu_attach_group(void *iommu_data, /* pr_debug("tce_vfio: Attaching group #%u to iommu %p\n", iommu_group_id(iommu_group), iommu_group); */ table_group = iommu_group_get_iommudata(iommu_group); + if (!table_group) { + ret = -ENODEV; + goto unlock_exit; + } if (tce_groups_attached(container) && (!table_group->ops || !table_group->ops->take_ownership || |