This patch adds bus uevent support for mdev bus in order to allow
cooperation with userspace.

Signed-off-by: Jason Wang <jasow...@redhat.com>
---
 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,
 };
-- 
2.19.1

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