From ce73953a1eb3727d335775b39eea94fa28ec696b Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Sat, 1 Apr 2000 06:06:37 +0000
Subject: [PATCH] device_set_unit() DO NOT USE THIS.  This was approved before
 4.0 release for inclusion into the release, but bde talked me out of
 committing the module that needs this until after the release.  It is after
 the release now. :-)

---
 sys/kern/subr_bus.c | 19 +++++++++++++++++++
 sys/sys/bus.h       |  1 +
 2 files changed, 20 insertions(+)

diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c
index b8131febb6d..7492a4bbc08 100644
--- a/sys/kern/subr_bus.c
+++ b/sys/kern/subr_bus.c
@@ -1199,6 +1199,25 @@ device_shutdown(device_t dev)
     return DEVICE_SHUTDOWN(dev);
 }
 
+int
+device_set_unit(device_t dev, int unit)
+{
+    devclass_t dc;
+    int err;
+
+    dc = device_get_devclass(dev);
+    if (unit < dc->maxunit && dc->devices[unit])
+	return EBUSY;
+    err = devclass_delete_device(dc, dev);
+    if (err)
+	return err;
+    dev->unit = unit;
+    err = devclass_add_device(dc, dev);
+    if (err)
+	return err;
+    return 0;
+}
+
 #ifdef DEVICE_SYSCTLS
 
 /*
diff --git a/sys/sys/bus.h b/sys/sys/bus.h
index 84176db9755..77bd9030d57 100644
--- a/sys/sys/bus.h
+++ b/sys/sys/bus.h
@@ -257,6 +257,7 @@ void	device_set_desc_copy(device_t dev, const char* desc);
 int	device_set_devclass(device_t dev, const char *classname);
 int	device_set_driver(device_t dev, driver_t *driver);
 void	device_set_flags(device_t dev, u_int32_t flags);
+int	device_set_unit(device_t dev, int unit);	/* XXX DONT USE XXX */
 int	device_shutdown(device_t dev);
 void	device_unbusy(device_t dev);
 void	device_verbose(device_t dev);