netdev - [PATCH] dsa: fix for_each

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Date:   Sun, 11 Jul 2021 18:12:56 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Alexander Lobakin <alobakin@...me>
cc:     Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] dsa: fix for_each_child.cocci warnings

From: kernel test robot <lkp@...el.com>

For_each_available_child_of_node should have of_node_put() before
return around line 423.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

CC: Alexander Lobakin <alobakin@...me>
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: kernel test robot <lkp@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...ia.fr>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   de5540965853e514a85d3b775e9049deb85a2ff3
commit: 227d72063fccb2d19b30fb4197fba478514f7d83 dsa: simplify Kconfig symbols and dependencies
:::::: branch date: 15 hours ago
:::::: commit date: 4 months ago

 ksz_common.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -419,8 +419,10 @@ int ksz_switch_register(struct ksz_devic
 				if (of_property_read_u32(port, "reg",
 							 &port_num))
 					continue;
-				if (!(dev->port_mask & BIT(port_num)))
+				if (!(dev->port_mask & BIT(port_num))) {
+					of_node_put(port);
 					return -EINVAL;
+				}
 				of_get_phy_mode(port,
 						&dev->ports[port_num].interface);
 			}