From 8804517e9fc16c10081ff5e42e7d80704973a8e2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 15 Nov 2017 12:07:24 +0100 Subject: [PATCH] soc: qcom: smsm: fix child-node lookup 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. Note that the original premature free of the parent node has already been fixed separately. Also note that this pattern of looking up the first child node with a given property is rare enough that a generic helper is probably not warranted. Fixes: c97c4090ff72 ("soc: qcom: smsm: Add driver for Qualcomm SMSM") Fixes: 3e8b55411468 ("soc: qcom: smsm: fix of_node refcnting problem") Cc: Bjorn Andersson Cc: Rob Clark Signed-off-by: Johan Hovold Reviewed-by: Bjorn Andersson Signed-off-by: Andy Gross --- drivers/soc/qcom/smsm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/soc/qcom/smsm.c b/drivers/soc/qcom/smsm.c index 403bea9d546b..50214b620865 100644 --- a/drivers/soc/qcom/smsm.c +++ b/drivers/soc/qcom/smsm.c @@ -496,8 +496,10 @@ static int qcom_smsm_probe(struct platform_device *pdev) if (!smsm->hosts) return -ENOMEM; - local_node = of_find_node_with_property(of_node_get(pdev->dev.of_node), - "#qcom,smem-state-cells"); + for_each_child_of_node(pdev->dev.of_node, local_node) { + if (of_find_property(local_node, "#qcom,smem-state-cells", NULL)) + break; + } if (!local_node) { dev_err(&pdev->dev, "no state entry\n"); return -EINVAL;