linux-kernel - Re: [PATCH v2] drm/imx: ipuv3-crtc: Return error if ipu_plane

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Date:	Fri, 06 Nov 2015 16:24:59 +0100
From:	Philipp Zabel <p.zabel@...gutronix.de>
To:	Liu Ying <Ying.Liu@...escale.com>
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	airlied@...ux.ie
Subject: Re: [PATCH v2] drm/imx: ipuv3-crtc: Return error if
 ipu_plane_init() fails for primary plane

Am Freitag, den 06.11.2015, 22:42 +0800 schrieb Liu Ying:
> For primary plane initialization failure cases, ipu_plane_init() may return
> a pointer encoded by ERR_PTR(). So, we should bailout instead of using that
> pointer blindly.
> 
> Signed-off-by: Liu Ying <Ying.Liu@...escale.com>
> ---
> v1->v2:
> * Trivial commit message fix.
> * Rebase onto Phillip's patch[1].
>   [1] http://www.spinics.net/lists/dri-devel/msg93700.html
> 
>  drivers/gpu/drm/imx/ipuv3-crtc.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
> index 872183a..35a77e5 100644
> --- a/drivers/gpu/drm/imx/ipuv3-crtc.c
> +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
> @@ -361,6 +361,10 @@ static int ipu_crtc_init(struct ipu_crtc *ipu_crtc,
>  		dp = IPU_DP_FLOW_SYNC_BG;
>  	ipu_crtc->plane[0] = ipu_plane_init(drm, ipu, pdata->dma[0], dp, 0,
>  					    DRM_PLANE_TYPE_PRIMARY);
> +	if (IS_ERR(ipu_crtc->plane[0])) {
> +		ret = PTR_ERR(ipu_crtc->plane[0]);
> +		goto err_put_resources;
> +	}
>  
>  	ret = imx_drm_add_crtc(drm, &ipu_crtc->base, &ipu_crtc->imx_crtc,
>  			&ipu_crtc->plane[0]->base, &ipu_crtc_helper_funcs,

Applied, thanks.

regards
Philipp

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