diff options
| author | Max Gurtovoy <mgurtovoy@nvidia.com> | 2021-08-05 22:18:59 -0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-08-11 09:50:10 -0600 |
| commit | ae03c3771b8cbbed3802ad1153d896c32015c520 (patch) | |
| tree | 88b17c4754f6823d47dc2516ba43f8ff2ba38506 /samples/vfio-mdev/mtty.c | |
| parent | de5494af4815a4c9328536c72741229b7de88e7f (diff) | |
| download | linux-stable-ae03c3771b8cbbed3802ad1153d896c32015c520.tar.gz linux-stable-ae03c3771b8cbbed3802ad1153d896c32015c520.tar.bz2 linux-stable-ae03c3771b8cbbed3802ad1153d896c32015c520.zip | |
vfio: Introduce a vfio_uninit_group_dev() API call
This pairs with vfio_init_group_dev() and allows undoing any state that is
stored in the vfio_device unrelated to registration. Add appropriately
placed calls to all the drivers.
The following patch will use this to add pre-registration state for the
device set.
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/3-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'samples/vfio-mdev/mtty.c')
| -rw-r--r-- | samples/vfio-mdev/mtty.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index 8b26fecc4afe..37cc9067e160 100644 --- a/samples/vfio-mdev/mtty.c +++ b/samples/vfio-mdev/mtty.c @@ -718,8 +718,8 @@ static int mtty_probe(struct mdev_device *mdev) mdev_state = kzalloc(sizeof(struct mdev_state), GFP_KERNEL); if (mdev_state == NULL) { - atomic_add(nr_ports, &mdev_avail_ports); - return -ENOMEM; + ret = -ENOMEM; + goto err_nr_ports; } vfio_init_group_dev(&mdev_state->vdev, &mdev->dev, &mtty_dev_ops); @@ -732,9 +732,8 @@ static int mtty_probe(struct mdev_device *mdev) mdev_state->vconfig = kzalloc(MTTY_CONFIG_SPACE_SIZE, GFP_KERNEL); if (mdev_state->vconfig == NULL) { - kfree(mdev_state); - atomic_add(nr_ports, &mdev_avail_ports); - return -ENOMEM; + ret = -ENOMEM; + goto err_state; } mutex_init(&mdev_state->ops_lock); @@ -743,14 +742,19 @@ static int mtty_probe(struct mdev_device *mdev) mtty_create_config_space(mdev_state); ret = vfio_register_group_dev(&mdev_state->vdev); - if (ret) { - kfree(mdev_state); - atomic_add(nr_ports, &mdev_avail_ports); - return ret; - } - + if (ret) + goto err_vconfig; dev_set_drvdata(&mdev->dev, mdev_state); return 0; + +err_vconfig: + kfree(mdev_state->vconfig); +err_state: + vfio_uninit_group_dev(&mdev_state->vdev); + kfree(mdev_state); +err_nr_ports: + atomic_add(nr_ports, &mdev_avail_ports); + return ret; } static void mtty_remove(struct mdev_device *mdev) @@ -761,6 +765,7 @@ static void mtty_remove(struct mdev_device *mdev) vfio_unregister_group_dev(&mdev_state->vdev); kfree(mdev_state->vconfig); + vfio_uninit_group_dev(&mdev_state->vdev); kfree(mdev_state); atomic_add(nr_ports, &mdev_avail_ports); } |