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net: dsa: loop: Check for memory allocation failure

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If 'devm_kzalloc' fails, a NULL pointer will be dereferenced.
Return -ENOMEM instead, as done for some other memory allocation just a
few lines above.

Fixes: 98cd1552ea ("net: dsa: Mock-up driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christophe Jaillet 2017-05-06 07:29:45 +02:00 committed by David S. Miller
parent d62844a825
commit 8ce7aaaa97
1 changed files with 3 additions and 0 deletions
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3
drivers/net/dsa/dsa_loop.c
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@ -256,6 +256,9 @@ static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
return -ENOMEM;
ps = devm_kzalloc(&mdiodev->dev, sizeof(*ps), GFP_KERNEL);
if (!ps)
return -ENOMEM;
ps->netdev = dev_get_by_name(&init_net, pdata->netdev);
if (!ps->netdev)
return -EPROBE_DEFER;