Hi Samuel, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on v4.15-rc7 next-20180110] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Samuel-Li/drm-amdgpu-allow-framebuffer-in-GART-memory-as-well/20180106-050432 base: git://people.freedesktop.org/~airlied/linux.git drm-next smatch warnings: drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c:226 amdgpu_gem_prime_export() error: 'buf' dereferencing possible ERR_PTR() # https://github.com/0day-ci/linux/commit/6aa2afecb5a3efc463d200023839399571404843 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 6aa2afecb5a3efc463d200023839399571404843 vim +/buf +226 drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c 6aa2afecb5 Samuel Li 2018-01-04 211 d38ceaf99e Alex Deucher 2015-04-20 212 struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, d38ceaf99e Alex Deucher 2015-04-20 213 struct drm_gem_object *gobj, d38ceaf99e Alex Deucher 2015-04-20 214 int flags) d38ceaf99e Alex Deucher 2015-04-20 215 { d38ceaf99e Alex Deucher 2015-04-20 216 struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); 4b277247b1 Christian König 2017-11-13 217 struct dma_buf *buf; d38ceaf99e Alex Deucher 2015-04-20 218 e1eb899b45 Christian König 2017-08-25 219 if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm) || e1eb899b45 Christian König 2017-08-25 220 bo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) d38ceaf99e Alex Deucher 2015-04-20 221 return ERR_PTR(-EPERM); d38ceaf99e Alex Deucher 2015-04-20 222 4b277247b1 Christian König 2017-11-13 223 buf = drm_gem_prime_export(dev, gobj, flags); 4b277247b1 Christian König 2017-11-13 224 if (!IS_ERR(buf)) 4b277247b1 Christian König 2017-11-13 225 buf->file->f_mapping = dev->anon_inode->i_mapping; 6aa2afecb5 Samuel Li 2018-01-04 @226 buf->ops = &amdgpu_dmabuf_ops; 6aa2afecb5 Samuel Li 2018-01-04 227 4b277247b1 Christian König 2017-11-13 228 return buf; d38ceaf99e Alex Deucher 2015-04-20 229 } 6aa2afecb5 Samuel Li 2018-01-04 230 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
