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. :-)

2 files changed, 20 insertions, 0 deletions

diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c
index b8131fe..7492a4b 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 84176db..77bd903 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);