Driver core: Cleanup get_device_parent() in device_add() and device_move()

Make setup_parent() void as get_device_parent() will always return
either a valid kobject or NULL.
Introduce cleanup_glue_dir() to drop reference grabbed on "glue"
directory by get_device_parent(). Use it for cleanup in device_move()
and device_add() on errors.

This should fix the refcounting problem reported in
http://marc.info/?l=linux-kernel&m=120052487909200&w=2

Signed-off-by: Cornelia Huck <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Gabor Gombas <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Cc: David Miller <[email protected]>
Cc: Kay Sievers <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions