[PATCH] gma500: medfield: Fix possible NULL pointer dereference

[Patrik Jakobsson]

On Sun, Feb 24, 2013 at 11:31 PM, Syam Sidhardhan
<syamsidhardh at gmail.com> wrote:
> The use of pointer sender should be after the NULL check.
>
> Signed-off-by: Syam Sidhardhan <s.syam at samsung.com>
> ---
>  drivers/gpu/drm/gma500/mdfld_dsi_output.c |    7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/gma500/mdfld_dsi_output.c b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
> index 2d4ab48..3abf831 100644
> --- a/drivers/gpu/drm/gma500/mdfld_dsi_output.c
> +++ b/drivers/gpu/drm/gma500/mdfld_dsi_output.c
> @@ -92,8 +92,8 @@ void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
>  {
>         struct mdfld_dsi_pkg_sender *sender =
>                                 mdfld_dsi_get_pkg_sender(dsi_config);
> -       struct drm_device *dev = sender->dev;
> -       struct drm_psb_private *dev_priv = dev->dev_private;
> +       struct drm_device *dev;
> +       struct drm_psb_private *dev_priv;
>         u32 gen_ctrl_val;
>
>         if (!sender) {
> @@ -101,6 +101,9 @@ void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
>                 return;
>         }
>
> +       dev = sender->dev;
> +       dev_priv = dev->dev_private;
> +
>         /* Set default display backlight value to 85% (0xd8)*/
>         mdfld_dsi_send_mcs_short(sender, write_display_brightness, 0xd8, 1,
>                                 true);
> --
> 1.7.9.5

Your patch has been applied to:
https://github.com/patjak/drm-gma500.git gma500-next

Thanks
Patrik Jakobsson