xen: Add module alias to autoload backend drivers
All the Xen backend drivers are assigned to a special bus type
xen-backend. This patch exports xen-backend:* names through modalias and
uevent to autoload them.
Signed-off-by: Bastian Blank <waldi@debian.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c b/drivers/xen/xenbus/xenbus_probe_backend.c
index ec510e5..60adf91 100644
--- a/drivers/xen/xenbus/xenbus_probe_backend.c
+++ b/drivers/xen/xenbus/xenbus_probe_backend.c
@@ -107,6 +107,9 @@
if (xdev == NULL)
return -ENODEV;
+ if (add_uevent_var(env, "MODALIAS=xen-backend:%s", xdev->devicetype))
+ return -ENOMEM;
+
/* stuff we want to pass to /sbin/hotplug */
if (add_uevent_var(env, "XENBUS_TYPE=%s", xdev->devicetype))
return -ENOMEM;