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soc/tegra: pmc: Fix child-node lookup
commit1dc6bd5e39
upstream. Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent pmc node could end up being prematurely freed as of_find_node_by_name() drops a reference to its first argument. Fixes:3568df3d31
("soc: tegra: Add thermal reset (thermtrip) support to PMC") Cc: stable <stable@vger.kernel.org> # 4.0 Cc: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1189,7 +1189,7 @@ static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
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if (!pmc->soc->has_tsense_reset)
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return;
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np = of_find_node_by_name(pmc->dev->of_node, "i2c-thermtrip");
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np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
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if (!np) {
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dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
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return;
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