linux-kernel - [PATCH 2/3] gve: Propagate error codes to caller

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Message-Id: <4dd2418fabfde8631c8f0644ab6cee1fec972cc0.1625118581.git.christophe.jaillet@wanadoo.fr>
Date:   Thu,  1 Jul 2021 07:58:51 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     csully@...gle.com, sagis@...gle.com, jonolson@...gle.com,
        davem@...emloft.net, kuba@...nel.org, awogbemila@...gle.com,
        willemb@...gle.com, yangchun@...gle.com, bcf@...gle.com,
        kuozhao@...gle.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/3] gve: Propagate error codes to caller

If 'gve_probe()' fails, we should propagate the error code, instead of
hard coding a -ENXIO value.
Make sure that all error handling paths set a correct value for 'err'.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/ethernet/google/gve/gve_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 32166ebc0f01..85a5076dc788 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -1469,7 +1469,7 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	err = pci_enable_device(pdev);
 	if (err)
-		return -ENXIO;
+		return err;
 
 	err = pci_request_regions(pdev, "gvnic-cfg");
 	if (err)
@@ -1512,6 +1512,7 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dev = alloc_etherdev_mqs(sizeof(*priv), max_tx_queues, max_rx_queues);
 	if (!dev) {
 		dev_err(&pdev->dev, "could not allocate netdev\n");
+		err = -ENOMEM;
 		goto abort_with_db_bar;
 	}
 	SET_NETDEV_DEV(dev, &pdev->dev);
@@ -1593,7 +1594,7 @@ static int gve_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 abort_with_enabled:
 	pci_disable_device(pdev);
-	return -ENXIO;
+	return err;
 }
 
 static void gve_remove(struct pci_dev *pdev)
-- 
2.30.2