driver core: fix possible missing of device probe

Inside bus_add_driver(), one device might be added(device_add()) into
the bus or probed which is triggered by deferred probe
just after completing of driver_attach() and before
'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)',
so the device won't be probed by this driver.

This patch moves the below line

	'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)'

before driver_attach() inside bus_add_driver() to fix the
problem.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 24eb07868344..f9d31320bd37 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -700,12 +700,12 @@ int bus_add_driver(struct device_driver *drv)
         if (error)
                 goto out_unregister;
 
+        klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
         if (drv->bus->p->drivers_autoprobe) {
                 error = driver_attach(drv);
                 if (error)
                         goto out_unregister;
         }
-        klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
         module_add_driver(drv->owner, drv);
 
         error = driver_create_file(drv, &driver_attr_uevent);