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class='nohover-highlight'> 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@huawei.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://lore.kernel.org/r/20250315120143.2344958-1-yuehaibing@huawei.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> 2025-03-05drm/{i915,xe}: Run DRM default client setupThomas Zimmermann Rework fbdev probing to support fbdev_probe in struct drm_driver and remove the old fb_probe callback. Provide an initializer macro that sets the callback in struct drm_driver according to the kernel configuration. Call drm_client_setup_with_color_mode() to run the kernel's default client setup for DRM. This commit also prepares support for the kernel's drm_log client (or any future client) in i915. Using drm_log will also require vmap support in GEM objects. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241212170913.185939-11-tzimmermann@suse.de Signed-off-by: Maarten Lankhorst <dev@lankhorst.se> 2025-01-21drm/xe/display: Re-use display vmas when possibleMaarten Lankhorst i915 has this really nice, infrastructure where everything becomes complicated, GGTT needs eviction, etc.. Lets not do that, and make the dumbest possible interface instead. Try to retrieve the VMA from old_plane_state, or intel_fbdev if kernel fb. Link: https://patchwork.freedesktop.org/patch/msgid/20241206182032.196307-1-dev@lankhorst.se Signed-off-by: Maarten Lankhorst <dev@lankhorst.se> Reviewed-by: Animesh Manna <animesh.manna@intel.com> Tested-by: Jani Saarinen <jani.saarinen@intel.com>