Re: [kwiboo-linux-rockchip:rockchip-5.1-patches-from-5.3-v5.1.5 83/106] drivers/gpu//drm/rockchip/rockchip_drm_gem.c:230:9: error: implicit declaration of function 'vm_map_pages'; did you mean 'vma_pages'?

[Jonas Karlman <jonas@kwiboo.se>]

On 2019-05-26 17:25, Souptick Joarder wrote:
> Hi Jonas,
>
> On Sun, May 26, 2019 at 4:29 PM kbuild test robot <lkp@intel.com> wrote:
>> tree:   https://github.com/Kwiboo/linux-rockchip rockchip-5.1-patches-from-5.3-v5.1.5
>> head:   622dad206e3b82c53acac1857f8a6ff970c0d01b
>> commit: 4004964b0854f3258032a723627d487882a74380 [83/106] drm/rockchip/rockchip_drm_gem.c: convert to use vm_map_pages()
>> config: arm64-allyesconfig (attached as .config)
>> compiler: aarch64-linux-gcc (GCC) 7.4.0
>> reproduce:
>>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         git checkout 4004964b0854f3258032a723627d487882a74380
>>         # save the attached .config to linux build tree
>>         GCC_VERSION=7.4.0 make.cross ARCH=arm64
>>
>> If you fix the issue, kindly add following tag
>> Reported-by: kbuild test robot <lkp@intel.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>    drivers/gpu//drm/rockchip/rockchip_drm_gem.c: In function 'rockchip_drm_gem_object_mmap_iommu':
>>>> drivers/gpu//drm/rockchip/rockchip_drm_gem.c:230:9: error: implicit declaration of function 'vm_map_pages'; did you mean 'vma_pages'? [-Werror=implicit-function-declaration]
>>      return vm_map_pages(vma, rk_obj->pages, count);
>>             ^~~~~~~~~~~~
>>             vma_pages
>>    cc1: some warnings being treated as errors
> Looking into https://github.com/Kwiboo/linux-rockchip/blob/rockchip-5.1-patches-from-5.3-v5.1.5/mm/memory.c
> vm_map_pages() API is missing. vm_map_pages() merged into 5.2-rc1.
> Is the below match merged into  https://github.com/Kwiboo/linux-rockchip ?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.2-rc1&id=a667d7456f189e3422725dddcd067537feac49c0

Thanks for looking, I do not know why kbuild test robot have started building from my github tree,
I pushed a v5.1 branch with cherry-picked commits from v5.2+next before I did a local build test and kbuild test robot started making some unnecessary noise.
Will be more careful not to push code before making a local test build.

Regards,
Jonas

>> vim +230 drivers/gpu//drm/rockchip/rockchip_drm_gem.c
>>
>>    219
>>    220  static int rockchip_drm_gem_object_mmap_iommu(struct drm_gem_object *obj,
>>    221                                                struct vm_area_struct *vma)
>>    222  {
>>    223          struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
>>    224          unsigned int count = obj->size >> PAGE_SHIFT;
>>    225          unsigned long user_count = vma_pages(vma);
>>    226
>>    227          if (user_count == 0)
>>    228                  return -ENXIO;
>>    229
>>  > 230          return vm_map_pages(vma, rk_obj->pages, count);
>>    231  }
>>    232
>>
>> ---
>> 0-DAY kernel test infrastructure                Open Source Technology Center
>> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation