[PATCH 4/4] drm/exynos: fix NULL pointer reference

[Inki Dae]

On 2015년 02월 05일 16:11, Joonyoung Shim wrote:
> There is a case called disable_plane callback function even if
> plane->crtc is NULL from exynos_drm_encoder_disable and it will cause
> NULL pointer reference error.

Applied. (patch 1 though 4)

Thanks,
Inki Dae

> 
> Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_encoder.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_encoder.c b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
> index 7e282e3..57de0bd 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_encoder.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_encoder.c
> @@ -102,7 +102,7 @@ static void exynos_drm_encoder_disable(struct drm_encoder *encoder)
>  
>  	/* all planes connected to this encoder should be also disabled. */
>  	drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
> -		if (plane->crtc == encoder->crtc)
> +		if (plane->crtc && (plane->crtc == encoder->crtc))
>  			plane->funcs->disable_plane(plane);
>  	}
>  }
>