All the Xen backend drivers are assigned to a special bus type
xen-backend. This allows userspace to load the modules on request.
This patch defines xen-backend:* aliases on the modules and exports this
names through modalias and uevent.
Signed-off-by: Bastian Blank <waldi@xxxxxxxxxx>
---
drivers/block/xen-blkback/blkback.c | 1 +
drivers/net/xen-netback/netback.c | 1 +
drivers/xen/xenbus/xenbus_probe.c | 3 ++-
drivers/xen/xenbus/xenbus_probe_backend.c | 3 +++
4 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/block/xen-blkback/blkback.c
b/drivers/block/xen-blkback/blkback.c
index 5cf2993..ed62008 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -824,3 +824,4 @@ static int __init xen_blkif_init(void)
module_init(xen_blkif_init);
MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("xen-backend:vbd");
diff --git a/drivers/net/xen-netback/netback.c
b/drivers/net/xen-netback/netback.c
index 0e4851b..fd00f25 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1743,3 +1743,4 @@ failed_init:
module_init(netback_init);
MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("xen-backend:vif");
diff --git a/drivers/xen/xenbus/xenbus_probe.c
b/drivers/xen/xenbus/xenbus_probe.c
index 2ed0b04..bd2f90c 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -393,7 +393,8 @@ static ssize_t devtype_show(struct device *dev,
static ssize_t modalias_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- return sprintf(buf, "xen:%s\n", to_xenbus_device(dev)->devicetype);
+ return sprintf(buf, "%s:%s\n", dev->bus->name,
+ to_xenbus_device(dev)->devicetype);
}
struct device_attribute xenbus_dev_attrs[] = {
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 @@ static int xenbus_uevent_backend(struct device *dev,
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;
--
1.7.5.4
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