Re: [PATCH v7 2/3] drm/virtio: Add support for saving and restoring virtio_gpu_objects

[kernel test robot <lkp@intel.com>]

Hi,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on drm/drm-next daeinki-drm-exynos/exynos-drm-next drm-i915/for-linux-next drm-i915/for-linux-next-fixes drm-tip/drm-tip linus/master v6.19-rc4 next-20260109]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/dongwon-kim-intel-com/drm-virtio-Freeze-and-restore-hooks-to-support-suspend-and-resume/20260108-024124
base:   https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
patch link:    https://lore.kernel.org/r/20260107182745.229481-3-dongwon.kim%40intel.com
patch subject: [PATCH v7 2/3] drm/virtio: Add support for saving and restoring virtio_gpu_objects
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20260112/202601121246.Q3BHNIsw-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260112/202601121246.Q3BHNIsw-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601121246.Q3BHNIsw-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/virtio/virtgpu_prime.c: In function 'virtgpu_dma_buf_obj_resubmit':
>> drivers/gpu/drm/virtio/virtgpu_prime.c:291:17: error: implicit declaration of function 'DRM_ERROR'; did you mean 'DRM_IOR'? [-Wimplicit-function-declaration]
     291 |                 DRM_ERROR("no sgt bound to virtio_gpu_object\n");
         |                 ^~~~~~~~~
         |                 DRM_IOR


vim +291 drivers/gpu/drm/virtio/virtgpu_prime.c

   282	
   283	int virtgpu_dma_buf_obj_resubmit(struct virtio_gpu_device *vgdev,
   284					 struct virtio_gpu_object *bo)
   285	{
   286		struct virtio_gpu_mem_entry *ents;
   287		struct scatterlist *sl;
   288		int i;
   289	
   290		if (!bo->sgt) {
 > 291			DRM_ERROR("no sgt bound to virtio_gpu_object\n");
   292			return -ENOMEM;
   293		}
   294	
   295		ents = kvmalloc_array(bo->sgt->nents,
   296				      sizeof(struct virtio_gpu_mem_entry),
   297				      GFP_KERNEL);
   298		if (!ents) {
   299			DRM_ERROR("failed to allocate ent list\n");
   300			return -ENOMEM;
   301		}
   302	
   303		for_each_sgtable_dma_sg(bo->sgt, sl, i) {
   304			ents[i].addr = cpu_to_le64(sg_dma_address(sl));
   305			ents[i].length = cpu_to_le32(sg_dma_len(sl));
   306			ents[i].padding = 0;
   307		}
   308	
   309		virtio_gpu_cmd_resource_create_blob(vgdev, bo, &bo->params,
   310						    ents, bo->sgt->nents);
   311	
   312		return 0;
   313	}
   314	

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