driver core: bus_add_driver should return an error if no bus

As pointed out by Dave Jones.

Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 1a5a350eca15..1d76e2349654 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -603,7 +603,7 @@ int bus_add_driver(struct device_driver *drv)
         int error = 0;
 
         if (!bus)
-                return 0;
+                return -EINVAL;
 
         pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
         error = kobject_set_name(&drv->kobj, "%s", drv->name);