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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> -----Original Message-----
> From: StDenis, Tom
> Sent: Wednesday, August 23, 2017 5:08 PM
> To: kbuild test robot
> Cc: kbuild-all@xxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Deucher, Alexander;
> Koenig, Christian
> Subject: 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'
> 
> The only way this would be possible if if the commit
> d1c99475f269a85e0a1916c949526cb22b157271 didn't make it into the public
> staging tree.

It's there:
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.14-wip&id=49ad04f2eae72fe928716efe557c73d1f346b9fd
Built fine here.

Alex

> 
> 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
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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