diff options
author | Christoph Hellwig <hch@lst.de> | 2022-09-23 11:26:42 +0200 |
---|---|---|
committer | Alex Williamson <alex.williamson@redhat.com> | 2022-10-04 12:06:58 -0600 |
commit | 89345d5177aa0f6d678251e1e0870b0eeb1ab510 (patch) | |
tree | 8e29a3f83f05c8aa5a64b6b66c522c18d763c2b4 /drivers/s390/cio/vfio_ccw_drv.c | |
parent | vfio/mdev: make mdev.h standalone includable (diff) | |
download | linux-89345d5177aa0f6d678251e1e0870b0eeb1ab510.tar.gz linux-89345d5177aa0f6d678251e1e0870b0eeb1ab510.tar.bz2 linux-89345d5177aa0f6d678251e1e0870b0eeb1ab510.zip |
vfio/mdev: embedd struct mdev_parent in the parent data structure
Simplify mdev_{un}register_device by requiring the caller to pass in
a structure allocate as part of the parent device structure. This
removes the need for a list of parents and the separate mdev_parent
refcount as we can simplify rely on the reference to the parent device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Link: https://lore.kernel.org/r/20220923092652.100656-5-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/s390/cio/vfio_ccw_drv.c')
-rw-r--r-- | drivers/s390/cio/vfio_ccw_drv.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c index e9985c63dc6b..7d105915bd14 100644 --- a/drivers/s390/cio/vfio_ccw_drv.c +++ b/drivers/s390/cio/vfio_ccw_drv.c @@ -221,7 +221,8 @@ static int vfio_ccw_sch_probe(struct subchannel *sch) dev_set_drvdata(&sch->dev, private); - ret = mdev_register_device(&sch->dev, &vfio_ccw_mdev_driver); + ret = mdev_register_parent(&private->parent, &sch->dev, + &vfio_ccw_mdev_driver); if (ret) goto out_free; @@ -240,7 +241,7 @@ static void vfio_ccw_sch_remove(struct subchannel *sch) { struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev); - mdev_unregister_device(&sch->dev); + mdev_unregister_parent(&private->parent); dev_set_drvdata(&sch->dev, NULL); |