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Date: Sat, 11 Jul 2020 02:22:42 +0800
From: kernel test robot <lkp@...el.com>
To: Hans de Goede <hdegoede@...hat.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Noralf Trønnes <noralf@...nnes.org>
Subject: drivers/gpu/drm/drm_gem_shmem_helper.c:260:17: error: implicit
declaration of function 'pgprot_writecombine'; did you mean
Hi Hans,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 42f82040ee66db13525dc6f14b8559890b2f4c1c
commit: e4f86e43716443e934d705952902d40de0fa9a05 drm: Add Grain Media GM12U320 driver v2
date: 12 months ago
config: m68k-randconfig-r002-20200710 (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 e4f86e43716443e934d705952902d40de0fa9a05
# 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:27,
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:260:17: error: implicit declaration of function 'pgprot_writecombine'; did you mean 'dma_free_writecombine'? [-Werror=implicit-function-declaration]
260 | VM_MAP, pgprot_writecombine(PAGE_KERNEL));
| ^~~~~~~~~~~~~~~~~~~
| dma_free_writecombine
drivers/gpu/drm/drm_gem_shmem_helper.c:260:17: error: incompatible type for argument 4 of 'vmap'
260 | 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:29,
from drivers/gpu/drm/drm_gem_shmem_helper.c:6:
include/linux/vmalloc.h:109:14: note: expected 'pgprot_t' {aka 'struct <anonymous>'} but argument is of type 'int'
109 | extern void *vmap(struct page **pages, unsigned int count,
| ^~~~
cc1: some warnings being treated as errors
vim +260 drivers/gpu/drm/drm_gem_shmem_helper.c
2194a63a818db7 Noralf Trønnes 2019-03-12 243
2194a63a818db7 Noralf Trønnes 2019-03-12 244 static void *drm_gem_shmem_vmap_locked(struct drm_gem_shmem_object *shmem)
2194a63a818db7 Noralf Trønnes 2019-03-12 245 {
2194a63a818db7 Noralf Trønnes 2019-03-12 246 struct drm_gem_object *obj = &shmem->base;
2194a63a818db7 Noralf Trønnes 2019-03-12 247 int ret;
2194a63a818db7 Noralf Trønnes 2019-03-12 248
2194a63a818db7 Noralf Trønnes 2019-03-12 249 if (shmem->vmap_use_count++ > 0)
2194a63a818db7 Noralf Trønnes 2019-03-12 250 return shmem->vaddr;
2194a63a818db7 Noralf Trønnes 2019-03-12 251
2194a63a818db7 Noralf Trønnes 2019-03-12 252 ret = drm_gem_shmem_get_pages(shmem);
2194a63a818db7 Noralf Trønnes 2019-03-12 253 if (ret)
2194a63a818db7 Noralf Trønnes 2019-03-12 254 goto err_zero_use;
2194a63a818db7 Noralf Trønnes 2019-03-12 255
2194a63a818db7 Noralf Trønnes 2019-03-12 256 if (obj->import_attach)
2194a63a818db7 Noralf Trønnes 2019-03-12 257 shmem->vaddr = dma_buf_vmap(obj->import_attach->dmabuf);
2194a63a818db7 Noralf Trønnes 2019-03-12 258 else
be7d9f05c53e6f Boris Brezillon 2019-05-29 259 shmem->vaddr = vmap(shmem->pages, obj->size >> PAGE_SHIFT,
be7d9f05c53e6f Boris Brezillon 2019-05-29 @260 VM_MAP, pgprot_writecombine(PAGE_KERNEL));
2194a63a818db7 Noralf Trønnes 2019-03-12 261
2194a63a818db7 Noralf Trønnes 2019-03-12 262 if (!shmem->vaddr) {
2194a63a818db7 Noralf Trønnes 2019-03-12 263 DRM_DEBUG_KMS("Failed to vmap pages\n");
2194a63a818db7 Noralf Trønnes 2019-03-12 264 ret = -ENOMEM;
2194a63a818db7 Noralf Trønnes 2019-03-12 265 goto err_put_pages;
2194a63a818db7 Noralf Trønnes 2019-03-12 266 }
2194a63a818db7 Noralf Trønnes 2019-03-12 267
2194a63a818db7 Noralf Trønnes 2019-03-12 268 return shmem->vaddr;
2194a63a818db7 Noralf Trønnes 2019-03-12 269
2194a63a818db7 Noralf Trønnes 2019-03-12 270 err_put_pages:
2194a63a818db7 Noralf Trønnes 2019-03-12 271 drm_gem_shmem_put_pages(shmem);
2194a63a818db7 Noralf Trønnes 2019-03-12 272 err_zero_use:
2194a63a818db7 Noralf Trønnes 2019-03-12 273 shmem->vmap_use_count = 0;
2194a63a818db7 Noralf Trønnes 2019-03-12 274
2194a63a818db7 Noralf Trønnes 2019-03-12 275 return ERR_PTR(ret);
2194a63a818db7 Noralf Trønnes 2019-03-12 276 }
2194a63a818db7 Noralf Trønnes 2019-03-12 277
:::::: The code at line 260 was first introduced by commit
:::::: be7d9f05c53e6fc88525f8e55cf2dae937761799 drm/gem_shmem: Use a writecombine mapping for ->vaddr
:::::: TO: Boris Brezillon <boris.brezillon@...labora.com>
:::::: CC: Rob Herring <robh@...nel.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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