linux-kernel - Re: [PATCH 2/7] mfd: 88pm860x: Fix I2C device resource leak on regmap init fail

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Message-ID: <20140211122205.GQ32042@lee--X1>
Date:	Tue, 11 Feb 2014 12:22:05 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Sangbeom Kim <sbkim73@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	stable@...r.kernel.org
Subject: Re: [PATCH 2/7] mfd: 88pm860x: Fix I2C device resource leak on
 regmap init fail

On Tue, 11 Feb 2014, Krzysztof Kozlowski wrote:

> During probe the driver allocates dummy I2C device for companion chip
> and then allocates a regmap for it. If regmap_init_i2c() fails then the
> I2C driver (allocated with i2c_new_dummy()) is not freed and this
> resource leaks.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: stable@...r.kernel.org
> ---
>  drivers/mfd/88pm860x-core.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
> index e456be9a7c67..bcfc9e85b4a0 100644
> --- a/drivers/mfd/88pm860x-core.c
> +++ b/drivers/mfd/88pm860x-core.c
> @@ -1190,6 +1190,7 @@ static int pm860x_probe(struct i2c_client *client,
>  			ret = PTR_ERR(chip->regmap_companion);
>  			dev_err(&chip->companion->dev,
>  				"Failed to allocate register map: %d\n", ret);
> +			i2c_unregister_device(chip->companion);
>  			return ret;
>  		}
>  		i2c_set_clientdata(chip->companion, chip);

Applied, thanks.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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