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Date: Fri, 12 Jun 2020 23:02:55 +0800
From: kernel test robot <lkp@...el.com>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: drivers/video/fbdev/controlfb.c:326:23: error: implicit declaration
of function 'pgprot_noncached'
Hi Bartlomiej,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b791d1bdf9212d944d749a5c7ff6febdba241771
commit: a07a63b0e24dd1316d11427601a9f83dc955bb40 video: fbdev: controlfb: add COMPILE_TEST support
date: 8 weeks ago
config: m68k-randconfig-r025-20200612 (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 a07a63b0e24dd1316d11427601a9f83dc955bb40
# 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 >>, old ones prefixed by <<):
drivers/video/fbdev/controlfb.c: In function 'controlfb_mmap':
>> drivers/video/fbdev/controlfb.c:326:23: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration]
326 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
| ^~~~~~~~~~~~~~~~
drivers/video/fbdev/controlfb.c:326:23: error: incompatible types when assigning to type 'pgprot_t' {aka 'struct <anonymous>'} from type 'int'
drivers/video/fbdev/controlfb.c: In function 'controlfb_setcolreg':
drivers/video/fbdev/controlfb.c:373:13: warning: variable 'b' set but not used [-Wunused-but-set-variable]
373 | __u8 r, g, b;
| ^
drivers/video/fbdev/controlfb.c:373:10: warning: variable 'g' set but not used [-Wunused-but-set-variable]
373 | __u8 r, g, b;
| ^
drivers/video/fbdev/controlfb.c:373:7: warning: variable 'r' set but not used [-Wunused-but-set-variable]
373 | __u8 r, g, b;
| ^
drivers/video/fbdev/controlfb.c: In function 'control_set_hardware':
drivers/video/fbdev/controlfb.c:505:11: warning: variable 'cmode' set but not used [-Wunused-but-set-variable]
505 | int i, cmode;
| ^~~~~
cc1: some warnings being treated as errors
vim +/pgprot_noncached +326 drivers/video/fbdev/controlfb.c
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 303
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 304
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 305 /*
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 306 * Private mmap since we want to have a different caching on the framebuffer
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 307 * for controlfb.
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 308 * Note there's no locking in here; it's done in fb_mmap() in fbmem.c.
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 309 */
216d526c89d144 drivers/video/controlfb.c Christoph Hellwig 2006-01-14 310 static int controlfb_mmap(struct fb_info *info,
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 311 struct vm_area_struct *vma)
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 312 {
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 313 unsigned long mmio_pgoff;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 314 unsigned long start;
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 315 u32 len;
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 316
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 317 start = info->fix.smem_start;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 318 len = info->fix.smem_len;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 319 mmio_pgoff = PAGE_ALIGN((start & ~PAGE_MASK) + len) >> PAGE_SHIFT;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 320 if (vma->vm_pgoff >= mmio_pgoff) {
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 321 if (info->var.accel_flags)
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 322 return -EINVAL;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 323 vma->vm_pgoff -= mmio_pgoff;
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 324 start = info->fix.mmio_start;
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 325 len = info->fix.mmio_len;
64b3d0e8122b42 drivers/video/controlfb.c Benjamin Herrenschmidt 2008-12-18 @326 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 327 } else {
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 328 /* framebuffer */
64b3d0e8122b42 drivers/video/controlfb.c Benjamin Herrenschmidt 2008-12-18 329 vma->vm_page_prot = pgprot_cached_wthru(vma->vm_page_prot);
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 330 }
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 331
47f698a9f2fc49 drivers/video/controlfb.c Tomi Valkeinen 2013-04-17 332 return vm_iomap_memory(vma, start, len);
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 333 }
^1da177e4c3f41 drivers/video/controlfb.c Linus Torvalds 2005-04-16 334
:::::: The code at line 326 was first introduced by commit
:::::: 64b3d0e8122b422e879b23d42f9e0e8efbbf9744 powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED
:::::: TO: Benjamin Herrenschmidt <benh@...nel.crashing.org>
:::::: CC: Paul Mackerras <paulus@...ba.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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