gitlab.arm.com will be in the maintainance mode on Wednesday June 29th 01:00 - 10:00 (UTC+1). Repositories is read only during the maintainance.

  • Johan Hovold's avatar
    of: add helper to lookup compatible child node · 36156f92
    Johan Hovold authored
    
    
    Add of_get_compatible_child() helper that can be used to lookup
    compatible child nodes.
    
    Several drivers currently use of_find_compatible_node() to lookup child
    nodes while failing to notice that the of_find_ functions search the
    entire tree depth-first (from a given start node) and therefore can
    match unrelated nodes. The fact that these functions also drop a
    reference to the node they start searching from (e.g. the parent node)
    is typically also overlooked, something which can lead to use-after-free
    bugs.
    Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
    Signed-off-by: default avatarRob Herring <robh@kernel.org>
    36156f92
base.c 51.6 KB