aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/xen
diff options
context:
space:
mode:
authorMark McLoughlin <markmc@redhat.com>2008-04-02 13:54:05 -0400
committerIngo Molnar <mingo@elte.hu>2008-04-24 17:57:33 -0400
commitd2f0c52bec954460e72dee48f3a29c6f310d76be (patch)
tree9793e3f539f9eacd37b3183c8becd3190df535c4 /drivers/xen
parent1d78d7055629e3f6300d6b8d7028259ee2bffc0e (diff)
xen: Module autoprobing support for frontend drivers
Add module aliases to support autoprobing modules for xen frontend devices. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xenbus/xenbus_probe.c27
1 files changed, 25 insertions, 2 deletions
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 88fc5ec665f5..57ceb5346b74 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -88,6 +88,16 @@ int xenbus_match(struct device *_dev, struct device_driver *_drv)
88 return match_device(drv->ids, to_xenbus_device(_dev)) != NULL; 88 return match_device(drv->ids, to_xenbus_device(_dev)) != NULL;
89} 89}
90 90
91static int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env)
92{
93 struct xenbus_device *dev = to_xenbus_device(_dev);
94
95 if (add_uevent_var(env, "MODALIAS=xen:%s", dev->devicetype))
96 return -ENOMEM;
97
98 return 0;
99}
100
91/* device/<type>/<id> => <type>-<id> */ 101/* device/<type>/<id> => <type>-<id> */
92static int frontend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename) 102static int frontend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename)
93{ 103{
@@ -166,6 +176,7 @@ static struct xen_bus_type xenbus_frontend = {
166 .bus = { 176 .bus = {
167 .name = "xen", 177 .name = "xen",
168 .match = xenbus_match, 178 .match = xenbus_match,
179 .uevent = xenbus_uevent,
169 .probe = xenbus_dev_probe, 180 .probe = xenbus_dev_probe,
170 .remove = xenbus_dev_remove, 181 .remove = xenbus_dev_remove,
171 .shutdown = xenbus_dev_shutdown, 182 .shutdown = xenbus_dev_shutdown,
@@ -438,6 +449,12 @@ static ssize_t xendev_show_devtype(struct device *dev,
438} 449}
439DEVICE_ATTR(devtype, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_devtype, NULL); 450DEVICE_ATTR(devtype, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_devtype, NULL);
440 451
452static ssize_t xendev_show_modalias(struct device *dev,
453 struct device_attribute *attr, char *buf)
454{
455 return sprintf(buf, "xen:%s\n", to_xenbus_device(dev)->devicetype);
456}
457DEVICE_ATTR(modalias, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_modalias, NULL);
441 458
442int xenbus_probe_node(struct xen_bus_type *bus, 459int xenbus_probe_node(struct xen_bus_type *bus,
443 const char *type, 460 const char *type,
@@ -492,10 +509,16 @@ int xenbus_probe_node(struct xen_bus_type *bus,
492 509
493 err = device_create_file(&xendev->dev, &dev_attr_devtype); 510 err = device_create_file(&xendev->dev, &dev_attr_devtype);
494 if (err) 511 if (err)
495 goto fail_remove_file; 512 goto fail_remove_nodename;
513
514 err = device_create_file(&xendev->dev, &dev_attr_modalias);
515 if (err)
516 goto fail_remove_devtype;
496 517
497 return 0; 518 return 0;
498fail_remove_file: 519fail_remove_devtype:
520 device_remove_file(&xendev->dev, &dev_attr_devtype);
521fail_remove_nodename:
499 device_remove_file(&xendev->dev, &dev_attr_nodename); 522 device_remove_file(&xendev->dev, &dev_attr_nodename);
500fail_unregister: 523fail_unregister:
501 device_unregister(&xendev->dev); 524 device_unregister(&xendev->dev);