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| author | Alex Williamson <alex.williamson@redhat.com> | 2018-05-18 11:40:33 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2018-06-08 10:24:30 -0600 |
| commit | 6a62c1dfb5c7f6719361180fd0fdf45b15a35d95 (patch) | |
| tree | 0425a82038562ef3a4f2b59995e18cdf00fb971d | |
| parent | 002fe996f67f4f46d8917b14cfb6e4313c20685a (diff) | |
| download | linux-6a62c1dfb5c7f6719361180fd0fdf45b15a35d95.tar.bz2 | |
vfio/mdev: Re-order sysfs attribute creation
There exists a gap at the end of mdev_device_create() where the device
is visible to userspace, but we're not yet ready to handle removal, as
triggered through the 'remove' attribute. We handle this properly in
mdev_device_remove() with an -EAGAIN return, but we can marginally
reduce this gap by adding this attribute as a final step of our sysfs
setup.
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| -rw-r--r-- | drivers/vfio/mdev/mdev_sysfs.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/vfio/mdev/mdev_sysfs.c b/drivers/vfio/mdev/mdev_sysfs.c index 802df210929b..249472f05509 100644 --- a/drivers/vfio/mdev/mdev_sysfs.c +++ b/drivers/vfio/mdev/mdev_sysfs.c @@ -257,24 +257,24 @@ int mdev_create_sysfs_files(struct device *dev, struct mdev_type *type) { int ret; - ret = sysfs_create_files(&dev->kobj, mdev_device_attrs); - if (ret) - return ret; - ret = sysfs_create_link(type->devices_kobj, &dev->kobj, dev_name(dev)); if (ret) - goto device_link_failed; + return ret; ret = sysfs_create_link(&dev->kobj, &type->kobj, "mdev_type"); if (ret) goto type_link_failed; + ret = sysfs_create_files(&dev->kobj, mdev_device_attrs); + if (ret) + goto create_files_failed; + return ret; +create_files_failed: + sysfs_remove_link(&dev->kobj, "mdev_type"); type_link_failed: sysfs_remove_link(type->devices_kobj, dev_name(dev)); -device_link_failed: - sysfs_remove_files(&dev->kobj, mdev_device_attrs); return ret; } |