Hi Gerd, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4333a9b0b67bb4e8bcd91bdd80da80b0ec151162 commit: 0be895893607fb3447478d6e33dfb60644195a09 drm/shmem: switch shmem helper to &drm_gem_object_funcs.mmap date: 8 months ago config: m68k-randconfig-r016-20200619 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 0be895893607fb3447478d6e33dfb60644195a09 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>): In file included from include/linux/file.h:9, from include/linux/dma-buf.h:16, from drivers/gpu/drm/drm_gem_shmem_helper.c:6: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra] 33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/gpu/drm/drm_gem_shmem_helper.c: In function 'drm_gem_shmem_vmap_locked': drivers/gpu/drm/drm_gem_shmem_helper.c:261:17: error: implicit declaration of function 'pgprot_writecombine' [-Werror=implicit-function-declaration] 261 | VM_MAP, pgprot_writecombine(PAGE_KERNEL)); | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_gem_shmem_helper.c:261:17: error: incompatible type for argument 4 of 'vmap' 261 | VM_MAP, pgprot_writecombine(PAGE_KERNEL)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | int In file included from include/asm-generic/io.h:887, from arch/m68k/include/asm/io.h:11, from arch/m68k/include/asm/pgtable_no.h:14, from arch/m68k/include/asm/pgtable.h:3, from include/linux/mm.h:99, from include/linux/scatterlist.h:8, from include/linux/dma-buf.h:18, from drivers/gpu/drm/drm_gem_shmem_helper.c:6: include/linux/vmalloc.h:119:14: note: expected 'pgprot_t' {aka 'struct <anonymous>'} but argument is of type 'int' 119 | extern void *vmap(struct page **pages, unsigned int count, | ^~~~ drivers/gpu/drm/drm_gem_shmem_helper.c: In function 'drm_gem_shmem_mmap': >> drivers/gpu/drm/drm_gem_shmem_helper.c:540:22: error: incompatible types >> when assigning to type 'pgprot_t' {aka 'struct <anonymous>'} from type 'int' 540 | vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); | ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +540 drivers/gpu/drm/drm_gem_shmem_helper.c 513 514 /** 515 * drm_gem_shmem_mmap - Memory-map a shmem GEM object 516 * @obj: gem object 517 * @vma: VMA for the area to be mapped 518 * 519 * This function implements an augmented version of the GEM DRM file mmap 520 * operation for shmem objects. Drivers which employ the shmem helpers should 521 * use this function as their &drm_gem_object_funcs.mmap handler. 522 * 523 * Returns: 524 * 0 on success or a negative error code on failure. 525 */ 526 int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) 527 { 528 struct drm_gem_shmem_object *shmem; 529 int ret; 530 531 shmem = to_drm_gem_shmem_obj(obj); 532 533 ret = drm_gem_shmem_get_pages(shmem); 534 if (ret) { 535 drm_gem_vm_close(vma); 536 return ret; 537 } 538 539 vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; > 540 vma->vm_page_prot = > pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); 541 vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); 542 vma->vm_ops = &drm_gem_shmem_vm_ops; 543 544 /* Remove the fake offset */ 545 vma->vm_pgoff -= drm_vma_node_start(&shmem->base.vma_node); 546 547 return 0; 548 } 549 EXPORT_SYMBOL_GPL(drm_gem_shmem_mmap); 550 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
