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From: Herve Codina <herve.codina@bootlin.com>
To: Herve Codina <herve.codina@bootlin.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Rob Herring <robh@kernel.org>,
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Cc: linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org,
	netdev@vger.kernel.org,
	linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Allan Nielsen <allan.nielsen@microchip.com>,
	Steen Hegelund <steen.hegelund@microchip.com>,
	Luca Ceresoli <luca.ceresoli@bootlin.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	stable@vger.kernel.org
Subject: [PATCH 08/17] net: lan966x: remove debugfs directory in probe() error path
Date: Tue, 30 Apr 2024 10:37:17 +0200
Message-ID: <20240430083730.134918-9-herve.codina@bootlin.com>
In-Reply-To: <20240430083730.134918-1-herve.codina@bootlin.com>
References: <20240430083730.134918-1-herve.codina@bootlin.com>
Precedence: bulk
MIME-Version: 1.0
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A debugfs directory entry is create early during probe(). This entry is
not removed on error path leading to some "already present" issues in
case of EPROBE_DEFER.

Create this entry later in the probe() code to avoid the need to change
many 'return' in 'goto' and add the removal in the already present error
path.

Fixes: 942814840127 ("net: lan966x: Add VCAP debugFS support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 2635ef8958c8..61d88207eed4 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -1087,8 +1087,6 @@ static int lan966x_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, lan966x);
 	lan966x->dev = &pdev->dev;
 
-	lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL);
-
 	if (!device_get_mac_address(&pdev->dev, mac_addr)) {
 		ether_addr_copy(lan966x->base_mac, mac_addr);
 	} else {
@@ -1179,6 +1177,8 @@ static int lan966x_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, -ENODEV,
 				     "no ethernet-ports child found\n");
 
+	lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL);
+
 	/* init switch */
 	lan966x_init(lan966x);
 	lan966x_stats_init(lan966x);
@@ -1257,6 +1257,8 @@ static int lan966x_probe(struct platform_device *pdev)
 	destroy_workqueue(lan966x->stats_queue);
 	mutex_destroy(&lan966x->stats_lock);
 
+	debugfs_remove_recursive(lan966x->debugfs_root);
+
 	return err;
 }
 
-- 
2.44.0