linux-kernel - [PATCH] mailbox: mtk: add missing of_node

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Date:   Mon, 13 Dec 2021 01:44:05 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Jassi Brar <jassisinghbrar@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] mailbox: mtk: add missing of_node_put before return

From: Wang Qing <wangqing@...o.com>

Fix following coccicheck warning:
WARNING: Function "for_each_child_of_node" 
should have of_node_put() before return.

Early exits from for_each_child_of_node should decrement the
node reference counter.

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index a8845b1..03abad5
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -573,6 +573,7 @@ static int cmdq_probe(struct platform_device *pdev)
 				cmdq->clocks[alias_id].id = clk_names[alias_id];
 				cmdq->clocks[alias_id].clk = of_clk_get(node, 0);
 				if (IS_ERR(cmdq->clocks[alias_id].clk)) {
+					of_node_put(node);
 					dev_err(dev, "failed to get gce clk: %d\n", alias_id);
 					return PTR_ERR(cmdq->clocks[alias_id].clk);
 				}
-- 
2.7.4