netdev - [PATCH v2 net 4/8] net: mscc: ocelot: check for errors on memory allocation of ports

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Date:   Fri, 18 Sep 2020 04:07:26 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     yangbo.lu@....com, xiaoliang.yang_1@....com,
        UNGLinuxDriver@...rochip.com, claudiu.manoil@....com,
        alexandre.belloni@...tlin.com, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com, kuba@...nel.org
Subject: [PATCH v2 net 4/8] net: mscc: ocelot: check for errors on memory allocation of ports

From: Vladimir Oltean <vladimir.oltean@....com>

Do not proceed probing if we couldn't allocate memory for the ports
array, just error out.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
Changes in v2:
Stopped leaking the 'ports' OF node.

 drivers/net/ethernet/mscc/ocelot_vsc7514.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 65408bc994c4..904ea299a5e8 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -993,6 +993,10 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
 
 	ocelot->ports = devm_kcalloc(&pdev->dev, ocelot->num_phys_ports,
 				     sizeof(struct ocelot_port *), GFP_KERNEL);
+	if (!ocelot->ports) {
+		err = -ENOMEM;
+		goto out_put_ports;
+	}
 
 	ocelot->vcap_is2_keys = vsc7514_vcap_is2_keys;
 	ocelot->vcap_is2_actions = vsc7514_vcap_is2_actions;
-- 
2.25.1