Re: [radeon-alex:drm-next-4.14-wip 39/44] drivers/gpu/drm/radeon/radeon_ttm.c:763:2: error: implicit declaration of function 'ttm_populate_and_map_pages'

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The only way this would be possible if if the commit d1c99475f269a85e0a1916c949526cb22b157271 didn't make it into the public staging tree.

Tom


________________________________________
From: kbuild test robot <fengguang.wu@xxxxxxxxx>
Sent: Wednesday, August 23, 2017 16:52
To: StDenis, Tom
Cc: kbuild-all@xxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Deucher, Alexander; Koenig, Christian
Subject: [radeon-alex:drm-next-4.14-wip 39/44] drivers/gpu/drm/radeon/radeon_ttm.c:763:2: error: implicit declaration of function 'ttm_populate_and_map_pages'

tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-4.14-wip
head:   9f7373596843431b63965965f1059d39600db3a2
commit: 217dcd53c963af2bbbb8d04c357aed922f1faa20 [39/44] drm/radeon: use new TTM populate/dma map helper functions
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 217dcd53c963af2bbbb8d04c357aed922f1faa20
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa

All errors (new ones prefixed by >>):

   drivers/gpu/drm/radeon/radeon_ttm.c: In function 'radeon_ttm_tt_populate':
>> drivers/gpu/drm/radeon/radeon_ttm.c:763:2: error: implicit declaration of function 'ttm_populate_and_map_pages' [-Werror=implicit-function-declaration]
     return ttm_populate_and_map_pages(rdev->dev, &gtt->ttm);
     ^
   drivers/gpu/drm/radeon/radeon_ttm.c: In function 'radeon_ttm_tt_unpopulate':
>> drivers/gpu/drm/radeon/radeon_ttm.c:796:2: error: implicit declaration of function 'ttm_unmap_and_unpopulate_pages' [-Werror=implicit-function-declaration]
     ttm_unmap_and_unpopulate_pages(rdev->dev, &gtt->ttm);
     ^
   cc1: some warnings being treated as errors

vim +/ttm_populate_and_map_pages +763 drivers/gpu/drm/radeon/radeon_ttm.c

   762
 > 763          return ttm_populate_and_map_pages(rdev->dev, &gtt->ttm);
   764  }
   765
   766  static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
   767  {
   768          struct radeon_device *rdev;
   769          struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(ttm);
   770          bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
   771
   772          if (gtt && gtt->userptr) {
   773                  kfree(ttm->sg);
   774                  ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
   775                  return;
   776          }
   777
   778          if (slave)
   779                  return;
   780
   781          rdev = radeon_get_rdev(ttm->bdev);
   782  #if IS_ENABLED(CONFIG_AGP)
   783          if (rdev->flags & RADEON_IS_AGP) {
   784                  ttm_agp_tt_unpopulate(ttm);
   785                  return;
   786          }
   787  #endif
   788
   789  #ifdef CONFIG_SWIOTLB
   790          if (swiotlb_nr_tbl()) {
   791                  ttm_dma_unpopulate(&gtt->ttm, rdev->dev);
   792                  return;
   793          }
   794  #endif
   795
 > 796          ttm_unmap_and_unpopulate_pages(rdev->dev, &gtt->ttm);
   797  }
   798

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