On Wed, Nov 04, 2015 at 08:22:26PM +1100, Stephen Rothwell wrote: > Hi Dave, > > After merging the drm tree, today's linux-next build (s390 allmodconfig) > failed like this: > > drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c:143:2: error: implicit declaration of function 'dma_to_phys' [-Werror=implicit-function-declaration] > > Caused by commit > > 69c4938249fb ("drm/nouveau/instmem/gk20a: use direct CPU access") > > Discovered after the release. > Still seen in next-20151109, affecting at least alpha, i386, parisc, s390, and xtensa, but probably other architectures as well. dma_to_phys() was until now not used from driver code, and is only declared for an architecture if it is used/needed there. Also: ERROR: "drm_gem_cma_create" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_prime_mmap" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_prime_get_sg_table" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_vm_ops" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_mmap" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_prime_vunmap" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_prime_import_sg_table" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_free_object" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_prime_vmap" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_dumb_map_offset" [drivers/gpu/drm/vc4/vc4.ko] undefined! ERROR: "drm_gem_cma_create" [drivers/gpu/drm/drm_kms_helper.ko] undefined! ERROR: "drm_gem_cma_describe" [drivers/gpu/drm/drm_kms_helper.ko] undefined! ERROR: "drm_gem_cma_free_object" [drivers/gpu/drm/drm_kms_helper.ko] undefined! seen with m68k:allmodconfig. Guenter -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html