linux-kernel - [PATCH 5.14 361/849] qed: Dont ignore devlink allocation failures

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Message-Id: <20211115165432.451714988@linuxfoundation.org>
Date:   Mon, 15 Nov 2021 17:57:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Leon Romanovsky <leonro@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.14 361/849] qed: Dont ignore devlink allocation failures

From: Leon Romanovsky <leonro@...dia.com>

[ Upstream commit e6a54d6f221301347aaf9d83bb1f23129325c1c5 ]

devlink is a software interface that doesn't depend on any hardware
capabilities. The failure in SW means memory issues, wrong parameters,
programmer error e.t.c.

Like any other such interface in the kernel, the returned status of
devlink APIs should be checked and propagated further and not ignored.

Fixes: 755f982bb1ff ("qed/qede: make devlink survive recovery")
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/qlogic/qede/qede_main.c | 12 +++++-------
 drivers/scsi/qedf/qedf_main.c                |  2 ++
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 1c7f9ed6f1c19..826780e5aa49a 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1184,19 +1184,17 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 		edev->devlink = qed_ops->common->devlink_register(cdev);
 		if (IS_ERR(edev->devlink)) {
 			DP_NOTICE(edev, "Cannot register devlink\n");
+			rc = PTR_ERR(edev->devlink);
 			edev->devlink = NULL;
-			/* Go on, we can live without devlink */
+			goto err3;
 		}
 	} else {
 		struct net_device *ndev = pci_get_drvdata(pdev);
+		struct qed_devlink *qdl;
 
 		edev = netdev_priv(ndev);
-
-		if (edev->devlink) {
-			struct qed_devlink *qdl = devlink_priv(edev->devlink);
-
-			qdl->cdev = cdev;
-		}
+		qdl = devlink_priv(edev->devlink);
+		qdl->cdev = cdev;
 		edev->cdev = cdev;
 		memset(&edev->stats, 0, sizeof(edev->stats));
 		memcpy(&edev->dev_info, &dev_info, sizeof(dev_info));
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index 42d0d941dba5c..94ee08fab46a5 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -3416,7 +3416,9 @@ retry_probe:
 		qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
 		if (IS_ERR(qedf->devlink)) {
 			QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
+			rc = PTR_ERR(qedf->devlink);
 			qedf->devlink = NULL;
+			goto err2;
 		}
 	}
 
-- 
2.33.0