[PATCH v1] arcnet: Add NULL check in com20020pci_probe()

[Henry Martin <bsdhenrymartin@gmail.com>]

devm_kasprintf() returns NULL when memory allocation fails. Currently,
com20020pci_probe() does not check for this case, which results in a
NULL pointer dereference.

Add NULL check after devm_kasprintf() to prevent this issue.

Fixes: 6b17a597fc2f ("arcnet: restoring support for multiple Sohard Arcnet cards")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
---
 drivers/net/arcnet/com20020-pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/arcnet/com20020-pci.c b/drivers/net/arcnet/com20020-pci.c
index c5e571ec94c9..65c6fab0e359 100644
--- a/drivers/net/arcnet/com20020-pci.c
+++ b/drivers/net/arcnet/com20020-pci.c
@@ -264,6 +264,13 @@ static int com20020pci_probe(struct pci_dev *pdev,
 							"pci:red:recon:%d-%d",
 							dev->dev_id, i);
 			card->recon_led.dev = &dev->dev;
+			if (!card->tx_led.default_trigger ||
+			    !card->tx_led.name ||
+			    !card->recon_led.default_trigger ||
+			    !card->recon_led.name) {
+				ret = -ENOMEM;
+				goto err_free_arcdev;
+			}
 
 			ret = devm_led_classdev_register(&pdev->dev, &card->tx_led);
 			if (ret)
-- 
2.34.1