ARM64 always has CONFIG_MMU=y but adding a dependency on COMPILE_TEST allows an arch with MMU optional (riscv in this case) to build the hibmc driver, leading to a kconfig warning and build errors, so restore the MMU dependency.
WARNING: unmet direct dependencies detected for DRM_TTM Depends on [n]: HAS_IOMEM [=y] && DRM [=y] && MMU [=n] Selected by [y]: - DRM_TTM_HELPER [=y] && HAS_IOMEM [=y] && DRM [=y] - DRM_HISI_HIBMC [=y] && HAS_IOMEM [=y] && DRM [=y] && PCI [=y] && (ARM64 || COMPILE_TEST [=y])
riscv64-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.o: in function `.L97': ttm_bo_vm.c:(.text+0x814): undefined reference to `vmf_insert_pfn_prot' riscv64-linux-ld: drivers/gpu/drm/ttm/ttm_bo_vm.o: in function `.L0 ': ttm_bo_vm.c:(.text+0x9d0): undefined reference to `vmf_insert_pfn_prot'
Fixes: a0f25a6bb319 ("drm/hisilicon/hibmc: Allow to be built if COMPILE_TEST is enabled") Signed-off-by: Randy Dunlap rdunlap@infradead.org Reported-by: kernel test robot lkp@intel.com Cc: Javier Martinez Canillas javierm@redhat.com Cc: Thomas Zimmermann tzimmermann@suse.de Cc: Xinliang Liu xinliang.liu@linaro.org Cc: Tian Tao tiantao6@hisilicon.com Cc: John Stultz john.stultz@linaro.org Cc: Xinwei Kong kong.kongxinwei@hisilicon.com Cc: Chen Feng puck.chen@hisilicon.com Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/hisilicon/hibmc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig +++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config DRM_HISI_HIBMC tristate "DRM Support for Hisilicon Hibmc" - depends on DRM && PCI && (ARM64 || COMPILE_TEST) + depends on DRM && PCI && MMU && (ARM64 || COMPILE_TEST) select DRM_KMS_HELPER select DRM_VRAM_HELPER select DRM_TTM