[Intel-gfx] [CI v2 12/12] drm/edid: add EDID block count and size helpers

[kernel test robot]

Hi Jani,

I love your patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]
[also build test WARNING on next-20220411]
[cannot apply to drm/drm-next drm-intel/for-linux-next v5.18-rc2]
[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/intel-lab-lkp/linux/commits/Jani-Nikula/drm-edid-low-level-EDID-block-read-refactoring-etc/20220411-175027
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220411/202204112055.cUmakJdJ-lkp@intel.com/config)
compiler: arceb-elf-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/intel-lab-lkp/linux/commit/ba74d3cc8cc1b6ba4c34a039e797994ddbc77567
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Jani-Nikula/drm-edid-low-level-EDID-block-read-refactoring-etc/20220411-175027
        git checkout ba74d3cc8cc1b6ba4c34a039e797994ddbc77567
        # 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=arc SHELL=/bin/bash drivers/gpu/drm/

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

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/drm_edid.c: In function 'drm_do_get_edid':
>> drivers/gpu/drm/drm_edid.c:1664:21: warning: array subscript [128, 32640] is outside array bounds of 'struct edid[1]' [-Warray-bounds]
    1664 |         return block[0];
         |                ~~~~~^~~
   drivers/gpu/drm/drm_edid.c:2173:15: note: referencing an object of size 128 allocated by 'krealloc'
    2173 |         new = krealloc(edid, edid_size(edid), GFP_KERNEL);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +1664 drivers/gpu/drm/drm_edid.c

c465bbc87ce372 Stefan Brüns 2014-11-30  1659  
4ba0f53ce685b0 Jani Nikula  2022-03-31  1660  static int edid_block_tag(const void *_block)
4ba0f53ce685b0 Jani Nikula  2022-03-31  1661  {
4ba0f53ce685b0 Jani Nikula  2022-03-31  1662  	const u8 *block = _block;
4ba0f53ce685b0 Jani Nikula  2022-03-31  1663  
4ba0f53ce685b0 Jani Nikula  2022-03-31 @1664  	return block[0];
4ba0f53ce685b0 Jani Nikula  2022-03-31  1665  }
4ba0f53ce685b0 Jani Nikula  2022-03-31  1666  

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