linux-kernel - [PATCH] staging: qlge: deal with the case that devlink_health_reporter

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Message-Id: <20210324010002.109846-1-coxu@redhat.com>
Date:   Wed, 24 Mar 2021 09:00:01 +0800
From:   Coiby Xu <coxu@...hat.com>
To:     linux-staging@...ts.linux.dev
Cc:     Coiby Xu <coiby.xu@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Manish Chopra <manishc@...vell.com>,
        GR-Linux-NIC-Dev@...vell.com (supporter:QLOGIC QLGE 10Gb ETHERNET
        DRIVER), Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        netdev@...r.kernel.org (open list:QLOGIC QLGE 10Gb ETHERNET DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] staging: qlge: deal with the case that devlink_health_reporter_create fails

From: Coiby Xu <coiby.xu@...il.com>

devlink_health_reporter_create may fail. In that case, do the cleanup
work.

Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Coiby Xu <coxu@...hat.com>
---
 drivers/staging/qlge/qlge_devlink.c | 10 +++++++---
 drivers/staging/qlge/qlge_devlink.h |  2 +-
 drivers/staging/qlge/qlge_main.c    |  8 +++++++-
 3 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/qlge/qlge_devlink.c b/drivers/staging/qlge/qlge_devlink.c
index 86834d96cebf..0ab02d6d3817 100644
--- a/drivers/staging/qlge/qlge_devlink.c
+++ b/drivers/staging/qlge/qlge_devlink.c
@@ -148,16 +148,20 @@ static const struct devlink_health_reporter_ops qlge_reporter_ops = {
 	.dump = qlge_reporter_coredump,
 };
 
-void qlge_health_create_reporters(struct qlge_adapter *priv)
+long qlge_health_create_reporters(struct qlge_adapter *priv)
 {
 	struct devlink *devlink;
+	long err = 0;
 
 	devlink = priv_to_devlink(priv);
 	priv->reporter =
 		devlink_health_reporter_create(devlink, &qlge_reporter_ops,
 					       0, priv);
-	if (IS_ERR(priv->reporter))
+	if (IS_ERR(priv->reporter)) {
+		err = PTR_ERR(priv->reporter);
 		netdev_warn(priv->ndev,
 			    "Failed to create reporter, err = %ld\n",
-			    PTR_ERR(priv->reporter));
+			    err);
+	}
+	return err;
 }
diff --git a/drivers/staging/qlge/qlge_devlink.h b/drivers/staging/qlge/qlge_devlink.h
index 19078e1ac694..94538e923f2f 100644
--- a/drivers/staging/qlge/qlge_devlink.h
+++ b/drivers/staging/qlge/qlge_devlink.h
@@ -4,6 +4,6 @@
 
 #include <net/devlink.h>
 
-void qlge_health_create_reporters(struct qlge_adapter *priv);
+long qlge_health_create_reporters(struct qlge_adapter *priv);
 
 #endif /* QLGE_DEVLINK_H */
diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
index 5516be3af898..59d1ec580696 100644
--- a/drivers/staging/qlge/qlge_main.c
+++ b/drivers/staging/qlge/qlge_main.c
@@ -4620,7 +4620,11 @@ static int qlge_probe(struct pci_dev *pdev,
 	if (err)
 		goto netdev_free;
 
-	qlge_health_create_reporters(qdev);
+	err = qlge_health_create_reporters(qdev);
+
+	if (err)
+		goto devlink_unregister;
+
 	/* Start up the timer to trigger EEH if
 	 * the bus goes dead
 	 */
@@ -4632,6 +4636,8 @@ static int qlge_probe(struct pci_dev *pdev,
 	cards_found++;
 	return 0;
 
+devlink_unregister:
+	devlink_unregister(devlink);
 netdev_free:
 	free_netdev(ndev);
 devlink_free:
-- 
2.31.0