Hi
Am 29.07.25 um 08:07 schrieb chuguangqing:
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.
You need to select DRM_TTM_HELPER for your driver.
Best regards
Thomas
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
--
--
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)
