Hi Sui,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm/drm-next]
[also build test ERROR on robh/for-next drm-intel/for-linux-next drm-tip/drm-tip v5.17-rc2 next-20220202]
[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]

url:    https://github.com/0day-ci/linux/commits/Sui-Jingfeng/drm-lsdc-add-drm-driver-for-loongson-display-controller/20220202-151906
base:   git://anongit.freedesktop.org/drm/drm drm-next
config: arm-randconfig-c002-20220130 (https://download.01.org/0day-ci/archive/20220202/202202021922.RM944IfI-lkp(a)intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/b08e9bcd367a7b52a60ad2cb2487963b0bf4947d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sui-Jingfeng/drm-lsdc-add-drm-driver-for-loongson-display-controller/20220202-151906
        git checkout b08e9bcd367a7b52a60ad2cb2487963b0bf4947d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: arch/arm/mach-dove/pcie.o: in function `dove_pcie_setup':
   pcie.c:(.init.text+0x144): undefined reference to `pci_remap_iospace'
   arm-linux-gnueabi-ld: drivers/pci/pci.o: in function `devm_pci_remap_iospace':
   pci.c:(.text+0x50f0): undefined reference to `pci_remap_iospace'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_pin_locked':
>> drm_gem_vram_helper.c:(.text+0x1a4): undefined reference to `ttm_bo_validate'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_vram_mm_debugfs':
>> drm_gem_vram_helper.c:(.text+0x2dc): undefined reference to `ttm_resource_manager_debug'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_vram_mm_release':
>> drm_gem_vram_helper.c:(.text+0x30c): undefined reference to `ttm_range_man_fini_nocheck'
>> arm-linux-gnueabi-ld: drm_gem_vram_helper.c:(.text+0x314): undefined reference to `ttm_device_fini'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_bo_driver_move_notify':
>> drm_gem_vram_helper.c:(.text+0x3b4): undefined reference to `ttm_bo_vunmap'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `bo_driver_move':
>> drm_gem_vram_helper.c:(.text+0x3f8): undefined reference to `ttm_bo_move_memcpy'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `bo_driver_ttm_tt_destroy':
>> drm_gem_vram_helper.c:(.text+0x420): undefined reference to `ttm_tt_fini'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_object_free':
>> drm_gem_vram_helper.c:(.text+0x430): undefined reference to `ttm_bo_put'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `bo_driver_ttm_tt_create':
>> drm_gem_vram_helper.c:(.text+0x46c): undefined reference to `ttm_tt_init'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_create':
>> drm_gem_vram_helper.c:(.text+0x5b0): undefined reference to `ttm_bo_init'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_put':
   drm_gem_vram_helper.c:(.text+0x5f4): undefined reference to `ttm_bo_put'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_pin':
>> drm_gem_vram_helper.c:(.text+0x720): undefined reference to `ttm_bo_move_to_lru_tail'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_unpin':
   drm_gem_vram_helper.c:(.text+0x868): undefined reference to `ttm_bo_move_to_lru_tail'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_vmap':
>> drm_gem_vram_helper.c:(.text+0x910): undefined reference to `ttm_bo_vmap'
>> arm-linux-gnueabi-ld: drm_gem_vram_helper.c:(.text+0xa28): undefined reference to `ttm_bo_move_to_lru_tail'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drm_gem_vram_vunmap':
   drm_gem_vram_helper.c:(.text+0xc94): undefined reference to `ttm_bo_move_to_lru_tail'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `drmm_vram_helper_init':
>> drm_gem_vram_helper.c:(.text+0x1104): undefined reference to `ttm_device_init'
>> arm-linux-gnueabi-ld: drm_gem_vram_helper.c:(.text+0x1120): undefined reference to `ttm_range_man_init_nocheck'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `.LANCHOR2':
>> drm_gem_vram_helper.c:(.data+0x20): undefined reference to `ttm_bo_eviction_valuable'
   arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_vram_helper.o: in function `.LANCHOR1':
>> drm_gem_vram_helper.c:(.rodata+0xc): undefined reference to `drm_gem_ttm_print_info'
>> arm-linux-gnueabi-ld: drm_gem_vram_helper.c:(.rodata+0x28): undefined reference to `drm_gem_ttm_mmap'
   arm-linux-gnueabi-ld: drivers/gpu/drm/lsdc/lsdc_drv.o: in function `.LANCHOR2':
>> lsdc_drv.c:(.rodata+0xd4): undefined reference to `drm_gem_ttm_dumb_map_offset'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org