From: Amit Shah <amit.shah@redhat.com>
Date: Thu, 20 Jan 2011 12:15:18 -0500
Subject: [char] virtio: make console port names a KOBJ_ADD event
Message-id: <901c9efbb0da661cbcf71dc0b4a0c8f220dab382.1295525716.git.amit.shah@redhat.com>
Patchwork-id: 32727
O-Subject: [RHEL 5.7 / 5.6.z PATCH] virtio: console: Announce port names as
	KOBJ_ADD event
Bugzilla: 669909
RH-Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com>
RH-Acked-by: Harald Hoyer <harald@redhat.com>

RHEL5 has a stone-age version of udev (maintainer's words :-) which
doesn't parse the KOBJ_CHANGE event.  Let's emit the KOBJ_ADD event
instead so that symlinks are created when a port name is obtained.

Before this change, symlinks in /dev/virtio-ports were not always
created, which was noticed by the rhevm-agent team.

Bugzilla: 669909
Upstream: Not applicable (udev versions in rhel6 and upstream are fine
                          with KOBJ_CHANGE events.)

Brew: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=3051625

Thanks to Harald Hoyer for the debugging and coming up with the
solution.

Signed-off-by: Amit Shah <amit.shah@redhat.com>

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 9fc3862..9019c72 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1441,7 +1441,7 @@ static void handle_control_message(struct ports_device *portdev,
 			 * symlinks can be created based on udev
 			 * rules.
 			 */
-			kobject_uevent(&port->dev->kobj, KOBJ_CHANGE);
+			kobject_uevent(&port->dev->kobj, KOBJ_ADD);
 		}
 		break;
 	}