Re: [PATCH v7 1/3] i915/gvt: Separate the MMIO tracking table from GVT-g

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

Hi Zhi,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on drm-tip/drm-tip drm/drm-next next-20220325]
[cannot apply to tegra-drm/drm/tegra/for-next airlied/drm-next v5.17]
[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/Zhi-Wang/i915-gvt-Separate-the-MMIO-tracking-table-from-GVT-g/20220326-015627
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-c002 (https://download.01.org/0day-ci/archive/20220326/202203260829.JUQaTzGt-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/8203f91121efdcc910bde0bc4fe5ea678bdaaa5b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Zhi-Wang/i915-gvt-Separate-the-MMIO-tracking-table-from-GVT-g/20220326-015627
        git checkout 8203f91121efdcc910bde0bc4fe5ea678bdaaa5b
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/

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 >>):

   In file included from drivers/gpu/drm/i915/i915_driver.c:92:
>> drivers/gpu/drm/i915/intel_gvt.h:66:15: error: no previous prototype for 'intel_gvt_get_device_type' [-Werror=missing-prototypes]
      66 | unsigned long intel_gvt_get_device_type(struct drm_i915_private *i915)
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/intel_gvt.h:71:41: error: 'struct intel_gvt_mmio_table_iter' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
      71 | int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/i915/intel_gvt.h:71:5: error: no previous prototype for 'intel_gvt_iterate_mmio_table' [-Werror=missing-prototypes]
      71 | int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
--
   In file included from drivers/gpu/drm/i915/gvt/gvt.h:39,
                    from <command-line>:
>> drivers/gpu/drm/i915/intel_gvt.h:66:15: error: no previous prototype for 'intel_gvt_get_device_type' [-Werror=missing-prototypes]
      66 | unsigned long intel_gvt_get_device_type(struct drm_i915_private *i915)
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/i915/intel_gvt.h:71:41: error: 'struct intel_gvt_mmio_table_iter' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
      71 | int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/i915/intel_gvt.h:71:5: error: no previous prototype for 'intel_gvt_iterate_mmio_table' [-Werror=missing-prototypes]
      71 | int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/i915/gvt/gvt.h:43,
                    from <command-line>:
>> drivers/gpu/drm/i915/gvt/mmio.h:74:15: error: conflicting types for 'intel_gvt_get_device_type'
      74 | unsigned long intel_gvt_get_device_type(struct intel_gvt *gvt);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/i915/gvt/gvt.h:39,
                    from <command-line>:
   drivers/gpu/drm/i915/intel_gvt.h:66:15: note: previous definition of 'intel_gvt_get_device_type' was here
      66 | unsigned long intel_gvt_get_device_type(struct drm_i915_private *i915)
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/intel_gvt_get_device_type +66 drivers/gpu/drm/i915/intel_gvt.h

    65	
  > 66	unsigned long intel_gvt_get_device_type(struct drm_i915_private *i915)
    67	{
    68		return 0;
    69	}
    70	
  > 71	int intel_gvt_iterate_mmio_table(struct intel_gvt_mmio_table_iter *iter)
    72	{
    73		return 0;
    74	}
    75	#endif
    76	

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