linux-kernel - [PATCH 3.13 075/151] mfd: 88pm800: Fix I2C device resource leak if probe fails

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Date:	Fri,  2 May 2014 08:37:43 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Lee Jones <lee.jones@...aro.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13 075/151] mfd: 88pm800: Fix I2C device resource leak if probe fails

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

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

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

commit 141050cf3d84fc303df58796d68dc1376b0e8f67 upstream.

During probe the driver allocates two dummy I2C devices for subchips in
function pm800_pages_init(). Additionally this function allocates
regmaps for these subchips. If any of these steps fail then these dummy
I2C devices are not freed and resources leak.

On pm800_pages_init() fail the driver must call pm800_pages_exit() to
unregister dummy I2C devices.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/mfd/88pm800.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
index a65447d..da1ef32 100644
--- a/drivers/mfd/88pm800.c
+++ b/drivers/mfd/88pm800.c
@@ -571,7 +571,7 @@ static int pm800_probe(struct i2c_client *client,
 	ret = pm800_pages_init(chip);
 	if (ret) {
 		dev_err(&client->dev, "pm800_pages_init failed!\n");
-		goto err_page_init;
+		goto err_device_init;
 	}
 
 	ret = device_800_init(chip, pdata);
@@ -587,7 +587,6 @@ static int pm800_probe(struct i2c_client *client,
 
 err_device_init:
 	pm800_pages_exit(chip);
-err_page_init:
 err_subchip_alloc:
 	pm80x_deinit();
 out_init:
-- 
1.9.1

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