On Fri, 11 Oct 2019 16:15:52 +0800 Jason Wang <jasowang@xxxxxxxxxx> wrote: > This patch adds bus uevent support for mdev bus in order to allow > cooperation with userspace. > > Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> > --- > drivers/vfio/mdev/mdev_driver.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/vfio/mdev/mdev_driver.c b/drivers/vfio/mdev/mdev_driver.c > index b7c40ce86ee3..319d886ffaf7 100644 > --- a/drivers/vfio/mdev/mdev_driver.c > +++ b/drivers/vfio/mdev/mdev_driver.c > @@ -82,9 +82,17 @@ static int mdev_match(struct device *dev, struct device_driver *drv) > return 0; > } > > +static int mdev_uevent(struct device *dev, struct kobj_uevent_env *env) > +{ > + struct mdev_device *mdev = to_mdev_device(dev); > + > + return add_uevent_var(env, "MODALIAS=mdev:c%02X", mdev->class_id); > +} > + > struct bus_type mdev_bus_type = { > .name = "mdev", > .match = mdev_match, > + .uevent = mdev_uevent, > .probe = mdev_probe, > .remove = mdev_remove, > }; I'd merge that into the previous patch.