From 1e4d09d2212d9e230b967f57bc8df463527dbd75 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Thu, 11 Jul 2019 13:26:52 -0600 Subject: mdev: Send uevents around parent device registration This allows udev to trigger rules when a parent device is registered or unregistered from mdev. Reviewed-by: Cornelia Huck Reviewed-by: Kirti Wankhede Signed-off-by: Alex Williamson --- drivers/vfio/mdev/mdev_core.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/vfio') diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c index ed8608763134..b558d4cfd082 100644 --- a/drivers/vfio/mdev/mdev_core.c +++ b/drivers/vfio/mdev/mdev_core.c @@ -143,6 +143,8 @@ int mdev_register_device(struct device *dev, const struct mdev_parent_ops *ops) { int ret; struct mdev_parent *parent; + char *env_string = "MDEV_STATE=registered"; + char *envp[] = { env_string, NULL }; /* check for mandatory ops */ if (!ops || !ops->create || !ops->remove || !ops->supported_type_groups) @@ -194,6 +196,8 @@ int mdev_register_device(struct device *dev, const struct mdev_parent_ops *ops) mutex_unlock(&parent_list_lock); dev_info(dev, "MDEV: Registered\n"); + kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); + return 0; add_dev_err: @@ -217,6 +221,8 @@ EXPORT_SYMBOL(mdev_register_device); void mdev_unregister_device(struct device *dev) { struct mdev_parent *parent; + char *env_string = "MDEV_STATE=unregistered"; + char *envp[] = { env_string, NULL }; mutex_lock(&parent_list_lock); parent = __find_parent_device(dev); @@ -240,6 +246,9 @@ void mdev_unregister_device(struct device *dev) up_write(&parent->unreg_sem); mdev_put_parent(parent); + + /* We still have the caller's reference to use for the uevent */ + kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); } EXPORT_SYMBOL(mdev_unregister_device); -- cgit