linux-kernel - Re: [PATCH 4/8] drm/rcar-du: fix merge conflict for state->alpha

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Date:   Fri, 25 May 2018 20:23:45 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     David Airlie <airlied@...ux.ie>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Liviu Dudau <Liviu.Dudau@....com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/8] drm/rcar-du: fix merge conflict for state->alpha

Hi Arnd,

Thank you for the patch.

On Friday, 25 May 2018 18:50:11 EEST Arnd Bergmann wrote:
> The "alpha" struct member was removed in one commit but another user
> added in another, leading to a build failure:
> 
> drivers/gpu/drm/rcar-du/rcar_du_vsp.c: In function
> 'rcar_du_vsp_plane_atomic_duplicate_state':
> drivers/gpu/drm/rcar-du/rcar_du_vsp.c:325:6: error: 'struct
> rcar_du_vsp_plane_state' has no member named 'alpha' copy->alpha =
> to_rcar_vsp_plane_state(plane->state)->alpha;
> 
> This fixes up the merge by using the correct member.
> 
> Fixes: 75a07f399cd4 ("drm: rcar-du: Zero-out sg_tables when duplicating
> plane state") Fixes: 301a9b8d5456 ("drm/rcar-du: Convert to the new generic
> alpha property") Signed-off-by: Arnd Bergmann <arnd@...db.de>

I have posted the same fix a week ago, see https://patchwork.freedesktop.org/
patch/msgid/20180515174752.28954-1-laurent.pinchart+renesas@...asonboard.com. 
The patch is in Dave's master branch in commit 
315852b422972e6ebb1dfddaadada09e46a2681a.

> ---
>  drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c index 4a98470626d5..d9232e749b6d
> 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> @@ -322,7 +322,7 @@ rcar_du_vsp_plane_atomic_duplicate_state(struct
> drm_plane *plane) return NULL;
> 
>  	__drm_atomic_helper_plane_duplicate_state(plane, &copy->state);
> -	copy->alpha = to_rcar_vsp_plane_state(plane->state)->alpha;
> +	copy->state.alpha = plane->state->alpha;
> 
>  	return &copy->state;
>  }

-- 
Regards,

Laurent Pinchart