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2018-10-23drm/msm: fix OF child-node lookupJohan Hovold1-2/+3
Use the new of_get_compatible_child() helper to lookup the legacy pwrlevels child node instead of using of_find_compatible_node(), which searches the entire tree from a given start node and thus can return an unrelated (i.e. non-child) node. This also addresses a potential use-after-free (e.g. after probe deferral) as the tree-wide helper drops a reference to its first argument (i.e. the probed device's node). While at it, also fix the related child-node reference leak. Fixes: e2af8b6b0ca1 ("drm/msm: gpu: Use OPP tables if we can") Cc: stable <stable@vger.kernel.org> # 4.12 Cc: Jordan Crouse <jcrouse@codeaurora.org> Cc: Rob Clark <robdclark@gmail.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-23drm/mediatek: fix OF sibling-node lookupJohan Hovold1-2/+3
Use the new of_get_compatible_child() helper to lookup the sibling instead of using of_find_compatible_node(), which searches the entire tree from a given start node and thus can return an unrelated (i.e. non-sibling) node. This also addresses a potential use-after-free (e.g. after probe deferral) as the tree-wide helper drops a reference to its first argument (i.e. the parent device node). While at it, also fix the related cec-node reference leak. Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support") Cc: stable <stable@vger.kernel.org> # 4.8 Cc: Junzhi Zhao <junzhi.zhao@mediatek.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: CK Hu <ck.hu@mediatek.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-22of: Add missing exports of node name compare functionsRob Herring1-0/+2
Commit f42b0e18f2e5 ("of: add node name compare helper functions") failed to add the module exports to of_node_name_eq() and of_node_name_prefix(). Add them now. Fixes: f42b0e18f2e5 ("of: add node name compare helper functions") Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-17dt-bindings: Add OLPC vendor prefixLubomir Rintel1-0/+1
One Laptop Per Child is a non-profit that produced the XO series of eductional laptops for children. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Rob Herring <robh@kernel.org>