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Date: Sat, 20 Jun 2020 09:22:55 +0800
From: kernel test robot <lkp@...el.com>
To: Gerd Hoffmann <kraxel@...hat.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Steven Price <steven.price@....com>
Subject: 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'
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 <lkp@...el.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-all@lists.01.org
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