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| author | Jason Gunthorpe <jgg@nvidia.com> | 2021-06-17 16:22:15 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-06-21 15:29:25 -0600 |
| commit | 88a21f265ce50a17e6e71e3fb4467625cf234c5a (patch) | |
| tree | 284c8e38e4948e421c058d9e53f4e4c9dfac1158 /drivers/vfio/mdev/mdev_driver.c | |
| parent | af3ab3f9b986cdbc1b97b8a3341ce78851edb0dd (diff) | |
| download | linux-88a21f265ce50a17e6e71e3fb4467625cf234c5a.tar.gz linux-88a21f265ce50a17e6e71e3fb4467625cf234c5a.tar.bz2 linux-88a21f265ce50a17e6e71e3fb4467625cf234c5a.zip | |
vfio/mdev: Allow the mdev_parent_ops to specify the device driver to bind
This allows a mdev driver to opt out of using vfio_mdev.c, instead the
driver will provide a 'struct mdev_driver' and register directly with the
driver core.
Much of mdev_parent_ops becomes unused in this mode:
- create()/remove() are done via the mdev_driver probe()/remove()
- mdev_attr_groups becomes mdev_driver driver.dev_groups
- Wrapper function callbacks are replaced with the same ones from
struct vfio_device_ops
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Link: https://lore.kernel.org/r/20210617142218.1877096-8-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/mdev/mdev_driver.c')
| -rw-r--r-- | drivers/vfio/mdev/mdev_driver.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/vfio/mdev/mdev_driver.c b/drivers/vfio/mdev/mdev_driver.c index 041699571b7e..c368ec824e2b 100644 --- a/drivers/vfio/mdev/mdev_driver.c +++ b/drivers/vfio/mdev/mdev_driver.c @@ -71,10 +71,20 @@ static int mdev_remove(struct device *dev) return 0; } +static int mdev_match(struct device *dev, struct device_driver *drv) +{ + /* + * No drivers automatically match. Drivers are only bound by explicit + * device_driver_attach() + */ + return 0; +} + struct bus_type mdev_bus_type = { .name = "mdev", .probe = mdev_probe, .remove = mdev_remove, + .match = mdev_match, }; EXPORT_SYMBOL_GPL(mdev_bus_type); |