linux-kernel - [PATCH 4.19 126/229] HSI: omap_ssi: Fix refcount leak in ssi

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Message-Id: <20221024113003.079294681@linuxfoundation.org>
Date:   Mon, 24 Oct 2022 13:30:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 126/229] HSI: omap_ssi: Fix refcount leak in ssi_probe

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit 9a2ea132df860177b33c9fd421b26c4e9a0a9396 ]

When returning or breaking early from a
for_each_available_child_of_node() loop, we need to explicitly call
of_node_put() on the child node to possibly release the node.

Fixes: b209e047bc74 ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hsi/controllers/omap_ssi_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hsi/controllers/omap_ssi_core.c b/drivers/hsi/controllers/omap_ssi_core.c
index 129c5e6bc654..15ecc4bc8de6 100644
--- a/drivers/hsi/controllers/omap_ssi_core.c
+++ b/drivers/hsi/controllers/omap_ssi_core.c
@@ -560,6 +560,7 @@ static int ssi_probe(struct platform_device *pd)
 		if (!childpdev) {
 			err = -ENODEV;
 			dev_err(&pd->dev, "failed to create ssi controller port\n");
+			of_node_put(child);
 			goto out3;
 		}
 	}
-- 
2.35.1