linux-kernel - [PATCH 3.16.y-ckt 058/180] compal-laptop: Fix leaking hwmon device

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Message-Id: <1430991989-23170-59-git-send-email-luis.henriques@canonical.com>
Date:	Thu,  7 May 2015 10:44:27 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Sebastian Reichel <sre@...nel.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 058/180] compal-laptop: Fix leaking hwmon device

3.16.7-ckt11 -stable review patch.  If anyone has any objections, please let me know.

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

From: Krzysztof Kozlowski <k.kozlowski@...sung.com>

commit ad774702f1705c04e5fa492b793d8d477a504fa6 upstream.

The commit c2be45f09bb0 ("compal-laptop: Use
devm_hwmon_device_register_with_groups") wanted to change the
registering of hwmon device to resource-managed version. It mostly did
it except the main thing - it forgot to use devm-like function so the
hwmon device leaked after device removal or probe failure.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Fixes: c2be45f09bb0 ("compal-laptop: Use devm_hwmon_device_register_with_groups")
Acked-by: Guenter Roeck <linux@...ck-us.net>
Acked-by: Darren Hart <dvhart@...ux.intel.com>
Signed-off-by: Sebastian Reichel <sre@...nel.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/platform/x86/compal-laptop.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
index 26bfd7bb5c13..da5e7b8e4519 100644
--- a/drivers/platform/x86/compal-laptop.c
+++ b/drivers/platform/x86/compal-laptop.c
@@ -1027,9 +1027,9 @@ static int compal_probe(struct platform_device *pdev)
 	if (err)
 		return err;
 
-	hwmon_dev = hwmon_device_register_with_groups(&pdev->dev,
-						      "compal", data,
-						      compal_hwmon_groups);
+	hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
+							   "compal", data,
+							   compal_hwmon_groups);
 	if (IS_ERR(hwmon_dev)) {
 		err = PTR_ERR(hwmon_dev);
 		goto remove;
--
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