linux-kernel - [PATCH 3.16 266/366] rfkill: gpio: fix memory leak in probe error path

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Date:   Sun, 14 Oct 2018 16:25:41 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Johannes Berg" <johannes.berg@...el.com>,
        "Heikki Krogerus" <heikki.krogerus@...ux.intel.com>,
        "Johan Hovold" <johan@...nel.org>
Subject: [PATCH 3.16 266/366] rfkill: gpio: fix memory leak in probe error
 path

3.16.60-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@...nel.org>

commit 4bf01ca21e2e0e4561d1a03c48c3d740418702db upstream.

Make sure to free the rfkill device in case registration fails during
probe.

Fixes: 5e7ca3937fbe ("net: rfkill: gpio: convert to resource managed allocation")
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 net/rfkill/rfkill-gpio.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -134,13 +134,18 @@ static int rfkill_gpio_probe(struct plat
 
 	ret = rfkill_register(rfkill->rfkill_dev);
 	if (ret < 0)
-		return ret;
+		goto err_destroy;
 
 	platform_set_drvdata(pdev, rfkill);
 
 	dev_info(&pdev->dev, "%s device registered.\n", rfkill->name);
 
 	return 0;
+
+err_destroy:
+	rfkill_destroy(rfkill->rfkill_dev);
+
+	return ret;
 }
 
 static int rfkill_gpio_remove(struct platform_device *pdev)