linux-kernel - [PATCH v2] regulator: add missing call to of_node

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Date:   Fri, 26 Feb 2021 09:39:35 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     cristian.marussi@....com
Cc:     sudeep.holla@....com, lgirdwood@...il.com, broonie@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH v2] regulator: add missing call to of_node_put()

In one of the error paths of the for_each_child_of_node() loop,
add missing call to of_node_put().

Fix the following coccicheck warning:
./drivers/regulator/scmi-regulator.c:343:1-23: WARNING: Function
"for_each_child_of_node" should have of_node_put() before return around
line 347.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---

Changes in v2:
-add braces for if

 drivers/regulator/scmi-regulator.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/scmi-regulator.c b/drivers/regulator/scmi-regulator.c
index 0e8b3ca..a917c81 100644
--- a/drivers/regulator/scmi-regulator.c
+++ b/drivers/regulator/scmi-regulator.c
@@ -343,8 +343,10 @@ static int scmi_regulator_probe(struct scmi_device *sdev)
 	for_each_child_of_node(np, child) {
 		ret = process_scmi_regulator_of_node(sdev, child, rinfo);
 		/* abort on any mem issue */
-		if (ret == -ENOMEM)
+		if (ret == -ENOMEM) {
+			of_node_put(child);
 			return ret;
+		}
 	}
 
 	/*
-- 
1.8.3.1