linux-kernel - [PATCH net-next v1 1/4] net: mvpp2: Put fwnode in error case during ->probe()

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Message-Id: <20210510095808.3302997-1-andy.shevchenko@gmail.com>
Date:   Mon, 10 May 2021 12:58:05 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        Jakub Kicinski <kuba@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH net-next v1 1/4] net: mvpp2: Put fwnode in error case during ->probe()

In each iteration fwnode_for_each_available_child_node() bumps a reference
counting of a loop variable followed by dropping in on a next iteration,

Since in error case the loop is broken, we have to drop a reference count
by ourselves. Do it for port_fwnode in error case during ->probe().

Fixes: 248122212f68 ("net: mvpp2: use device_*/fwnode_* APIs instead of of_*")
Cc: Marcin Wojtas <mw@...ihalf.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index ec706d614cac..b48c08829a31 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -7552,6 +7552,8 @@ static int mvpp2_probe(struct platform_device *pdev)
 	return 0;
 
 err_port_probe:
+	fwnode_handle_put(port_fwnode);
+
 	i = 0;
 	fwnode_for_each_available_child_node(fwnode, port_fwnode) {
 		if (priv->port_list[i])
-- 
2.31.1