We encountered the following errors while compiling drm_vram_helper.ko ERROR: modpost: "drm_gem_ttm_print_info" [drivers/gpu/drm/drm_vram_helper.ko] undefined! ERROR: modpost: "drm_gem_ttm_mmap" [drivers/gpu/drm/drm_vram_helper.ko] undefined!
The functions drm_gem_ttm_mmap and drm_gem_ttm_print_info are defined in drm_gem_ttm_helper.c. This patch adds drm_gem_ttm_helper.o to DRM_VRAM_HELPER to resolve the undefined symbol errors. Signed-off-by: chuguangqing <chuguangq...@inspur.com> --- drivers/gpu/drm/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 4dafbdc8f86a..abbe32ddf6d0 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -125,7 +125,7 @@ drm_suballoc_helper-y := drm_suballoc.o obj-$(CONFIG_DRM_SUBALLOC_HELPER) += drm_suballoc_helper.o drm_vram_helper-y := drm_gem_vram_helper.o -obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o +obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o drm_gem_ttm_helper.o drm_ttm_helper-y := drm_gem_ttm_helper.o drm_ttm_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fbdev_ttm.o -- 2.43.5
