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| author | Dave Airlie <airlied@redhat.com> | 2017-03-28 10:34:19 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-03-28 10:34:19 +0300 |
| commit | e5c1ff14757afe21733ddee9cc4bbaeaeadbf803 (patch) | |
| tree | 0da1c9aaf772fac30fe68590a4ca1c3dd439cebd /drivers/vfio/vfio.c | |
| parent | 65d1086c44791112188f6aebbdc3a27cab3736d3 (diff) | |
| parent | c02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff) | |
| download | linux-e5c1ff14757afe21733ddee9cc4bbaeaeadbf803.tar.xz | |
Backmerge tag 'v4.11-rc4' into drm-next
Linux 4.11-rc4
The i915 GVT team need the rc4 code to base some more code on.
Diffstat (limited to 'drivers/vfio/vfio.c')
| -rw-r--r-- | drivers/vfio/vfio.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 609f4f982c74..561084ab387f 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -403,6 +403,7 @@ static void vfio_group_release(struct kref *kref) struct iommu_group *iommu_group = group->iommu_group; WARN_ON(!list_empty(&group->device_list)); + WARN_ON(group->notifier.head); list_for_each_entry_safe(unbound, tmp, &group->unbound_list, unbound_next) { @@ -1573,6 +1574,10 @@ static int vfio_group_fops_open(struct inode *inode, struct file *filep) return -EBUSY; } + /* Warn if previous user didn't cleanup and re-init to drop them */ + if (WARN_ON(group->notifier.head)) + BLOCKING_INIT_NOTIFIER_HEAD(&group->notifier); + filep->private_data = group; return 0; @@ -1584,9 +1589,6 @@ static int vfio_group_fops_release(struct inode *inode, struct file *filep) filep->private_data = NULL; - /* Any user didn't unregister? */ - WARN_ON(group->notifier.head); - vfio_group_try_dissolve_container(group); atomic_dec(&group->opened); |