Re: [PATCH v2 2/3] drm/fbdev: Select FB_CORE dependency for fbdev on DMA and TTM
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From: LEROY Christophe <hidden>
Date: 2024-12-13 07:40:45
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dri-devel, linux-staging, linuxppc-dev
Le 12/12/2024 à 11:04, Thomas Zimmermann a écrit :
Select FB_CORE if GEM's DMA and TTM implementations support fbdev
emulation. Fixes linker errors about missing symbols from the fbdev
subsystem.
Also see [1] for a related SHMEM fix.
Fixes: dadd28d4142f ("drm/client: Add client-lib module")
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/series/141411/ # 1
---
drivers/gpu/drm/Kconfig | 2 ++
1 file changed, 2 insertions(+)Build fails which pmac32_defconfig : LD .tmp_vmlinux1 powerpc64-linux-ld: drivers/macintosh/via-pmu-backlight.o: in function `pmu_backlight_init': via-pmu-backlight.c:(.init.text+0xc0): undefined reference to `backlight_device_register' make[2]: *** [scripts/Makefile.vmlinux:77: vmlinux] Error 1 make[1]: *** [/home/chleroy/linux-powerpc/Makefile:1225: vmlinux] Error 2
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diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 9abb41da4e3a..55ce61a46984 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig@@ -293,6 +293,7 @@ config DRM_TTM_HELPER tristate depends on DRM select DRM_TTM + select FB_CORE if DRM_FBDEV_EMULATION select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION help Helpers for ttm-based gem objects@@ -300,6 +301,7 @@ config DRM_TTM_HELPER config DRM_GEM_DMA_HELPER tristate depends on DRM + select FB_CORE if DRM_FBDEV_EMULATION select FB_DMAMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION help Choose this if you need the GEM DMA helper functions