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authorBastian Blank <waldi@debian.org>2011-06-29 14:40:08 +0200
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-06-30 12:15:33 -0400
commit149bb2fab547253e6359e76f1b86b95247110e68 (patch)
treecef69badb03090fc225bc08fbbc3ae20e3693d45 /drivers
parentcc85e93342c030f8ba07f572afa159ec4518231f (diff)
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/xen/xenbus/xenbus_probe.c3
-rw-r--r--drivers/xen/xenbus/xenbus_probe_backend.c3
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 2ed0b045c69a..bd2f90c9ac8b 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 ec510e562820..60adf919d78d 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;