[PATCH] drm/exynos: add error check routine in exynos_drm_open

[Inki Dae]

Nice catch!!!. Applied.

Thanks,
Inki Dae

2013/7/1 Seung-Woo Kim <sw0312.kim at samsung.com>:
> From: YoungJun Cho <yj44.cho at samsung.com>
>
> When the exynos_drm_subdrv_open() returns error, the file_priv
> should be released and file->driver_priv set to NULL.
>
> Signed-off-by: YoungJun Cho <yj44.cho at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_drv.c |    9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index 2762373..ca2729a 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -155,6 +155,7 @@ static int exynos_drm_unload(struct drm_device *dev)
>  static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
>  {
>         struct drm_exynos_file_private *file_priv;
> +       int ret;
>
>         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
>         if (!file_priv)
> @@ -162,7 +163,13 @@ static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
>
>         file->driver_priv = file_priv;
>
> -       return exynos_drm_subdrv_open(dev, file);
> +       ret = exynos_drm_subdrv_open(dev, file);
> +       if (ret) {
> +               kfree(file_priv);
> +               file->driver_priv = NULL;
> +       }
> +
> +       return ret;
>  }
>
>  static void exynos_drm_preclose(struct drm_device *dev,
> --
> 1.7.9.5
>
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