linux-kernel - [PATCH wireless] ray_cs: Fix an error handling path in ray

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Message-Id: <8c544d18084f8b37dd108e844f7e79e85ff708ff.1684570373.git.christophe.jaillet@wanadoo.fr>
Date:   Sat, 20 May 2023 10:13:22 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Kalle Valo <kvalo@...nel.org>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-wireless@...r.kernel.org
Subject: [PATCH wireless] ray_cs: Fix an error handling path in ray_probe()

Should ray_config() fail, some resources need to be released as already
done in the remove function.

While at it, remove a useless and erroneous comment. The probe is
ray_probe(), not ray_attach().

Fixes: 15b99ac17295 ("[PATCH] pcmcia: add return value to _config() functions")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/wireless/legacy/ray_cs.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/legacy/ray_cs.c b/drivers/net/wireless/legacy/ray_cs.c
index 1f57a0055bbd..38782d4c4694 100644
--- a/drivers/net/wireless/legacy/ray_cs.c
+++ b/drivers/net/wireless/legacy/ray_cs.c
@@ -270,13 +270,14 @@ static int ray_probe(struct pcmcia_device *p_dev)
 {
 	ray_dev_t *local;
 	struct net_device *dev;
+	int ret;
 
 	dev_dbg(&p_dev->dev, "ray_attach()\n");
 
 	/* Allocate space for private device-specific data */
 	dev = alloc_etherdev(sizeof(ray_dev_t));
 	if (!dev)
-		goto fail_alloc_dev;
+		return -ENOMEM;
 
 	local = netdev_priv(dev);
 	local->finder = p_dev;
@@ -313,11 +314,16 @@ static int ray_probe(struct pcmcia_device *p_dev)
 	timer_setup(&local->timer, NULL, 0);
 
 	this_device = p_dev;
-	return ray_config(p_dev);
+	ret = ray_config(p_dev);
+	if (ret)
+		goto err_free_dev;
+
+	return 0;
 
-fail_alloc_dev:
-	return -ENOMEM;
-} /* ray_attach */
+err_free_dev:
+	free_netdev(dev);
+	return ret;
+}
 
 static void ray_detach(struct pcmcia_device *link)
 {
-- 
2.34.1