tree: git://anongit.freedesktop.org/drm-intel topic/drm-misc
head: 37035e7411fc90d57e4aca83ef654f50c3a0f626
commit: e6f15b763ab2bc47000ec302123e2fb3bf2ad7d4 [2/11] drm/vgem: Enable dmabuf interface for export
config: m68k-allyesconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 4.9.0
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout e6f15b763ab2bc47000ec302123e2fb3bf2ad7d4
# save the attached .config to linux build tree
make.cross ARCH=m68k
All warnings (new ones prefixed by >>):
In file included from arch/m68k/include/asm/thread_info.h:5:0,
from include/linux/thread_info.h:54,
from include/asm-generic/preempt.h:4,
from arch/m68k/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:59,
from include/linux/spinlock.h:50,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from drivers/gpu/drm/vgem/vgem_drv.c:33:
drivers/gpu/drm/vgem/vgem_drv.c: In function 'vgem_prime_vmap':
drivers/gpu/drm/vgem/vgem_drv.c:238:53: error: 'PAGE_KERNEL_IO' undeclared (first use in this function)
addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO));
^
arch/m68k/include/asm/page.h:37:36: note: in definition of macro '__pgprot'
#define __pgprot(x) ((pgprot_t) { (x) } )
^
>> arch/m68k/include/asm/pgtable_mm.h:164:15: note: in expansion of macro 'pgprot_val'
? (__pgprot(pgprot_val(prot) | __SUN3_PAGE_NOCACHE)) \
^
>> include/asm-generic/pgtable.h:306:29: note: in expansion of macro 'pgprot_noncached'
#define pgprot_writecombine pgprot_noncached
^
>> drivers/gpu/drm/vgem/vgem_drv.c:238:33: note: in expansion of macro 'pgprot_writecombine'
addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO));
^
drivers/gpu/drm/vgem/vgem_drv.c:238:53: note: each undeclared identifier is reported only once for each function it appears in
addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO));
^
arch/m68k/include/asm/page.h:37:36: note: in definition of macro '__pgprot'
#define __pgprot(x) ((pgprot_t) { (x) } )
^
>> arch/m68k/include/asm/pgtable_mm.h:164:15: note: in expansion of macro 'pgprot_val'
? (__pgprot(pgprot_val(prot) | __SUN3_PAGE_NOCACHE)) \
^
>> include/asm-generic/pgtable.h:306:29: note: in expansion of macro 'pgprot_noncached'
#define pgprot_writecombine pgprot_noncached
^
>> drivers/gpu/drm/vgem/vgem_drv.c:238:33: note: in expansion of macro 'pgprot_writecombine'
addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO));
^
vim +/pgprot_writecombine +238 drivers/gpu/drm/vgem/vgem_drv.c
222 st = drm_prime_pages_to_sg(pages, obj->size >> PAGE_SHIFT);
223 drm_gem_put_pages(obj, pages, false, false);
224
225 return st;
226 }
227
228 static void *vgem_prime_vmap(struct drm_gem_object *obj)
229 {
230 long n_pages = obj->size >> PAGE_SHIFT;
231 struct page **pages;
232 void *addr;
233
234 pages = drm_gem_get_pages(obj);
235 if (IS_ERR(pages))
236 return NULL;
237
> 238 addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO));
239 drm_gem_put_pages(obj, pages, false, false);
240
241 return addr;
242 }
243
244 static void vgem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
245 {
246 vunmap(vaddr);
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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