linux-kernel - [PATCH] phy: marvell: phy-mvebu-cp110-comphy: Add of_node

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Message-Id: <20190723105327.8370-1-nishkadg.linux@gmail.com>
Date:   Tue, 23 Jul 2019 16:23:27 +0530
From:   Nishka Dasgupta <nishkadg.linux@...il.com>
To:     kishon@...com, linux-kernel@...r.kernel.org
Cc:     Nishka Dasgupta <nishkadg.linux@...il.com>
Subject: [PATCH] phy: marvell: phy-mvebu-cp110-comphy: Add of_node_put() before return

Each iteration of for_each_available_child_of_node puts the previous
node, but in the case of a return from the middle of the loop, there is
no put, thus causing a memory leak. Hence add an of_node_put before the
return in two places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@...il.com>
---
 drivers/phy/marvell/phy-mvebu-cp110-comphy.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/marvell/phy-mvebu-cp110-comphy.c b/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
index d98e0451f6a1..f7a16dc6e171 100644
--- a/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
+++ b/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
@@ -626,12 +626,16 @@ static int mvebu_comphy_probe(struct platform_device *pdev)
 		}
 
 		lane = devm_kzalloc(&pdev->dev, sizeof(*lane), GFP_KERNEL);
-		if (!lane)
+		if (!lane) {
+			of_node_put(child);
 			return -ENOMEM;
+		}
 
 		phy = devm_phy_create(&pdev->dev, child, &mvebu_comphy_ops);
-		if (IS_ERR(phy))
+		if (IS_ERR(phy)) {
+			of_node_put(child);
 			return PTR_ERR(phy);
+		}
 
 		lane->priv = priv;
 		lane->mode = PHY_MODE_INVALID;
-- 
2.19.1