linux-kernel - Re: [PATCH 1/2] drm/imx: ipuv3-crtc: Return error if ipu_plane

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Date:	Fri, 06 Nov 2015 11:05:54 +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 1/2] drm/imx: ipuv3-crtc: Return error if
 ipu_plane_init() fails for primary plane

Hi Liu,

Am Mittwoch, den 04.11.2015, 18:15 +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 use that
> pointer blindly.
> 
> Signed-off-by: Liu Ying <Ying.Liu@...escale.com>
> ---
>  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 7bc8301..8d68697 100644
> --- a/drivers/gpu/drm/imx/ipuv3-crtc.c
> +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
> @@ -370,6 +370,10 @@ static int ipu_crtc_init(struct ipu_crtc *ipu_crtc,
>  	id = imx_drm_crtc_id(ipu_crtc->imx_crtc);
>  	ipu_crtc->plane[0] = ipu_plane_init(ipu_crtc->base.dev, ipu,
>  					    pdata->dma[0], dp, BIT(id), true);
> +	if (IS_ERR(ipu_crtc->plane[0])) {
> +		ret = PTR_ERR(ipu_crtc->plane[0]);
> +		goto err_put_resources;

That should be "goto err_remove_crtc;"

regards
Philipp

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