From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759834AbYBVQ1V (ORCPT ); Fri, 22 Feb 2008 11:27:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757016AbYBVQ0v (ORCPT ); Fri, 22 Feb 2008 11:26:51 -0500 Received: from mail26.svc.cra.dublin.eircom.net ([159.134.118.55]:31938 "HELO mail26.svc.cra.dublin.eircom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756260AbYBVQ0t (ORCPT ); Fri, 22 Feb 2008 11:26:49 -0500 From: Mark McLoughlin To: linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, xen-devel@lists.xensource.com, jeremy@goop.org, Mark McLoughlin Subject: [PATCH] xen: Module autoprobing support for frontend drivers Date: Fri, 22 Feb 2008 16:20:17 +0000 Message-Id: <1203697218-32064-1-git-send-email-markmc@redhat.com> X-Mailer: git-send-email 1.5.4.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add module aliases to support autoprobing modules for xen frontend devices. Signed-off-by: Mark McLoughlin --- drivers/block/xen-blkfront.c | 1 + drivers/net/xen-netfront.c | 1 + drivers/xen/xenbus/xenbus_probe.c | 27 +++++++++++++++++++++++++-- 3 files changed, 27 insertions(+), 2 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 9c6f3f9..d0d5a02 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -998,3 +998,4 @@ module_exit(xlblk_exit); MODULE_DESCRIPTION("Xen virtual block device frontend"); MODULE_LICENSE("GPL"); MODULE_ALIAS_BLOCKDEV_MAJOR(XENVBD_MAJOR); +MODULE_ALIAS("xen:vbd"); diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 7483d45..b3fa27e 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -1809,3 +1809,4 @@ module_exit(netif_exit); MODULE_DESCRIPTION("Xen virtual network device frontend"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("xen:vif"); diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 4750de3..336363c 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) return match_device(drv->ids, to_xenbus_device(_dev)) != NULL; } +static int xenbus_uevent(struct device *_dev, struct kobj_uevent_env *env) +{ + struct xenbus_device *dev = to_xenbus_device(_dev); + + if (add_uevent_var(env, "MODALIAS=xen:%s", dev->devicetype)) + return -ENOMEM; + + return 0; +} + /* device// => - */ static int frontend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename) { @@ -166,6 +176,7 @@ static struct xen_bus_type xenbus_frontend = { .bus = { .name = "xen", .match = xenbus_match, + .uevent = xenbus_uevent, .probe = xenbus_dev_probe, .remove = xenbus_dev_remove, .shutdown = xenbus_dev_shutdown, @@ -438,6 +449,12 @@ static ssize_t xendev_show_devtype(struct device *dev, } DEVICE_ATTR(devtype, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_devtype, NULL); +static ssize_t xendev_show_modalias(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "xen:%s\n", to_xenbus_device(dev)->devicetype); +} +DEVICE_ATTR(modalias, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_modalias, NULL); int xenbus_probe_node(struct xen_bus_type *bus, const char *type, @@ -492,10 +509,16 @@ int xenbus_probe_node(struct xen_bus_type *bus, err = device_create_file(&xendev->dev, &dev_attr_devtype); if (err) - goto fail_remove_file; + goto fail_remove_nodename; + + err = device_create_file(&xendev->dev, &dev_attr_modalias); + if (err) + goto fail_remove_devtype; return 0; -fail_remove_file: +fail_remove_devtype: + device_remove_file(&xendev->dev, &dev_attr_devtype); +fail_remove_nodename: device_remove_file(&xendev->dev, &dev_attr_nodename); fail_unregister: device_unregister(&xendev->dev); -- 1.5.4.2