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Message-ID: <12145722-609e-41d0-b02b-059df5b6d17f@suse.de>
Date: Mon, 17 Mar 2025 09:09:38 +0100
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Yue Haibing <yuehaibing@...wei.com>, jani.nikula@...ux.intel.com,
 rodrigo.vivi@...el.com, joonas.lahtinen@...ux.intel.com,
 tursulin@...ulin.net, airlied@...il.com, simona@...ll.ch, dev@...khorst.se
Cc: intel-gfx@...ts.freedesktop.org, intel-xe@...ts.freedesktop.org,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] drm/i915/display: Fix build error without
 DRM_FBDEV_EMULATION



Am 15.03.25 um 13:01 schrieb Yue Haibing:
> In file included from <command-line>:
> ./drivers/gpu/drm/i915/display/intel_fbdev.h: In function ‘intel_fbdev_framebuffer’:
> ./drivers/gpu/drm/i915/display/intel_fbdev.h:32:16: error: ‘NULL’ undeclared (first use in this function)
>     32 |         return NULL;
>        |                ^~~~
> ./drivers/gpu/drm/i915/display/intel_fbdev.h:1:1: note: ‘NULL’ is defined in header ‘<stddef.h>’; did you forget to ‘#include <stddef.h>’?
>    +++ |+#include <stddef.h>
>      1 | /* SPDX-License-Identifier: MIT */
> ./drivers/gpu/drm/i915/display/intel_fbdev.h:32:16: note: each undeclared identifier is reported only once for each function it appears in
>     32 |         return NULL;
>        |                ^~~~
>
> Build fails if CONFIG_DRM_FBDEV_EMULATION is n, add missing header file.
>
> Fixes: 9fa154f40eb6 ("drm/{i915,xe}: Run DRM default client setup")
> Signed-off-by: Yue Haibing <yuehaibing@...wei.com>

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>

> ---
>   drivers/gpu/drm/i915/display/intel_fbdev.h | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.h b/drivers/gpu/drm/i915/display/intel_fbdev.h
> index ca2c8c438f02..89bad3a2b01a 100644
> --- a/drivers/gpu/drm/i915/display/intel_fbdev.h
> +++ b/drivers/gpu/drm/i915/display/intel_fbdev.h
> @@ -6,6 +6,8 @@
>   #ifndef __INTEL_FBDEV_H__
>   #define __INTEL_FBDEV_H__
>   
> +#include <linux/types.h>
> +
>   struct drm_fb_helper;
>   struct drm_fb_helper_surface_size;
>   struct drm_i915_private;

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)


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