linux-kernel - [PATCH] can: softing_cs: fix memleak on registration failure

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Date:   Wed, 22 Dec 2021 11:48:43 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>, stable@...r.kernel.org
Subject: [PATCH] can: softing_cs: fix memleak on registration failure

In case device registration fails during probe, the driver state and the
embedded platform device structure needs to be freed using
platform_device_put() to properly free all resources (e.g. the device
name).

Fixes: 0a0b7a5f7a04 ("can: add driver for Softing card")
Cc: stable@...r.kernel.org      # 2.6.38
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/net/can/softing/softing_cs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/softing/softing_cs.c b/drivers/net/can/softing/softing_cs.c
index 2e93ee792373..e5c939b63fa6 100644
--- a/drivers/net/can/softing/softing_cs.c
+++ b/drivers/net/can/softing/softing_cs.c
@@ -293,7 +293,7 @@ static int softingcs_probe(struct pcmcia_device *pcmcia)
 	return 0;
 
 platform_failed:
-	kfree(dev);
+	platform_device_put(pdev);
 mem_failed:
 pcmcia_bad:
 pcmcia_failed:
-- 
2.32.0