[PATCH 5.10 467/717] net: mscc: ocelot: Fix a resource leak in the error handling path of the probe function

Greg Kroah-Hartman
2020-12-28T14:50:14Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit f87675b836b324d270fd52f1f5e6d6bb9f4bd1d5 ]

In case of error after calling 'ocelot_init()', it must be undone by a
corresponding 'ocelot_deinit()' call, as already done in the remove
function.

Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201213114838.126922-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mscc/ocelot_vsc7514.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 1e7729421a825..9cf2bc5f42892 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -1267,7 +1267,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev)

err = mscc_ocelot_init_ports(pdev, ports);
if (err)
- goto out_put_ports;
+ goto out_ocelot_deinit;

if (ocelot->ptp) {
err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
@@ -1282,8 +1282,14 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
register_switchdev_notifier(&ocelot_switchdev_nb);
register_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);

+ of_node_put(ports);
+
dev_info(&pdev->dev, "Ocelot switch probed\n");

+ return 0;
+
+out_ocelot_deinit:
+ ocelot_deinit(ocelot);
out_put_ports:
of_node_put(ports);
return err;
--
2.27.0