linux-kernel - Re: [PATCH 1/3] mfd: da903x - fix da903x_add

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Message-ID: <AANLkTim7c6_rvOw6-TXB2=P6iWY3Rq76WUiqBxf0jaA2@mail.gmail.com>
Date:	Tue, 24 Aug 2010 13:47:45 +0800
From:	Eric Miao <eric.y.miao@...il.com>
To:	Axel Lin <axel.lin@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Mike Rapoport <mike@...pulab.co.il>
Subject: Re: [PATCH 1/3] mfd: da903x - fix da903x_add_subdevs error path

On Tue, Aug 24, 2010 at 1:44 PM, Axel Lin <axel.lin@...il.com> wrote:
> This patch fixes da903x_add_subdevs error path:
> 1. return -ENOMEM if platform_device_alloc() fail.
> 2. call platform_device_put() if platform_device_add() fail.
>
> Signed-off-by: Axel Lin <axel.lin@...il.com>

Acked-by: Eric Miao <eric.y.miao@...il.com>

> ---
>  drivers/mfd/da903x.c |    8 +++++++-
>  1 files changed, 7 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/mfd/da903x.c b/drivers/mfd/da903x.c
> index c07aece..2fadbae 100644
> --- a/drivers/mfd/da903x.c
> +++ b/drivers/mfd/da903x.c
> @@ -470,13 +470,19 @@ static int __devinit da903x_add_subdevs(struct da903x_chip *chip,
>                subdev = &pdata->subdevs[i];
>
>                pdev = platform_device_alloc(subdev->name, subdev->id);
> +               if (!pdev) {
> +                       ret = -ENOMEM;
> +                       goto failed;
> +               }
>
>                pdev->dev.parent = chip->dev;
>                pdev->dev.platform_data = subdev->platform_data;
>
>                ret = platform_device_add(pdev);
> -               if (ret)
> +               if (ret) {
> +                       platform_device_put(pdev);
>                        goto failed;
> +               }
>        }
>        return 0;
>
> --
> 1.7.2
>
>
>
>