[PATCH 2/7] driver core: safely unbind drivers for devices not on a bus

[Greg KH <greg@kroah.com>]

This patch (as667) changes the __device_release_driver() routine to
prevent it from crashing when it runs across a device not on any bus.
This seems logical, inasmuch as the corresponding bus_add_device()
routine has an explicit check allowing it to accept such devices.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---

 drivers/base/dd.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

0f836ca4c122f4ef096110d652a6326fe34e6961
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 730a9ce..889c711 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -209,7 +209,7 @@ static void __device_release_driver(stru
 		sysfs_remove_link(&dev->kobj, "driver");
 		klist_remove(&dev->knode_driver);
 
-		if (dev->bus->remove)
+		if (dev->bus && dev->bus->remove)
 			dev->bus->remove(dev);
 		else if (drv->remove)
 			drv->remove(dev);
-- 
1.2.6