tree cba58d3959606f2f4d7dd5ea95f8a79ac73fd2ad
parent 38737e490d4ea91660d3cec83ef88c4e6d360ae4
author Russell King <rmk+kernel@arm.linux.org.uk> 1443123393 +0100
committer David S. Miller <davem@davemloft.net> 1443161093 -0700

net: fix net_device refcounting

of_find_net_device_by_node() uses class_find_device() internally to
lookup the corresponding network device.  class_find_device() returns
a reference to the embedded struct device, with its refcount
incremented.

Add a comment to the definition in net/core/net-sysfs.c indicating the
need to drop this refcount, and fix the DSA code to drop this refcount
when the OF-generated platform data is cleaned up and freed.  Also
arrange for the ref to be dropped when handling errors.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>