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| author | Johan Hovold <johan@kernel.org> | 2018-08-27 10:21:45 +0200 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2018-08-29 08:06:46 -0500 |
| commit | 36156f9241cb0f9e37d998052873ca7501ad4b36 (patch) | |
| tree | 203d1e52a9e5a942a2b99ae0ecb984fa87453df8 /tools | |
| parent | Linux 4.19-rc1 (diff) | |
| download | linux-36156f9241cb0f9e37d998052873ca7501ad4b36.tar.gz linux-36156f9241cb0f9e37d998052873ca7501ad4b36.zip | |
of: add helper to lookup compatible child node
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: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions