linux-kernel - [PATCH 3.16.y-ckt 047/180] power_supply: lp8788-charger: Fix leaked power supply on probe fail

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Message-Id: <1430991989-23170-48-git-send-email-luis.henriques@canonical.com>
Date:	Thu,  7 May 2015 10:44:16 +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 047/180] power_supply: lp8788-charger: Fix leaked power supply on probe fail

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

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

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

commit a7117f81e8391e035c49b3440792f7e6cea28173 upstream.

Driver forgot to unregister charger power supply if registering of
battery supply failed in probe(). In such case the memory associated
with power supply leaked.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Fixes: 98a276649358 ("power_supply: Add new lp8788 charger driver")
Signed-off-by: Sebastian Reichel <sre@...nel.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/power/lp8788-charger.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/power/lp8788-charger.c b/drivers/power/lp8788-charger.c
index ed49b50b220b..72da2a6c22db 100644
--- a/drivers/power/lp8788-charger.c
+++ b/drivers/power/lp8788-charger.c
@@ -417,8 +417,10 @@ static int lp8788_psy_register(struct platform_device *pdev,
 	pchg->battery.num_properties = ARRAY_SIZE(lp8788_battery_prop);
 	pchg->battery.get_property = lp8788_battery_get_property;
 
-	if (power_supply_register(&pdev->dev, &pchg->battery))
+	if (power_supply_register(&pdev->dev, &pchg->battery)) {
+		power_supply_unregister(&pchg->charger);
 		return -EPERM;
+	}
 
 	return 0;
 }
--
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