Hi Mitali,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on staging/staging-testing]

url:    
https://github.com/0day-ci/linux/commits/Mitali-Borkar/Subject-PATCH-staging-media-meson-vdec-declare-u32-as-static-const/20210412-222025
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 
f2f560e1bdc055a6a306e6b7823ba589794e6564
config: mips-randconfig-r013-20210412 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 
9829f5e6b1bca9b61efc629770d28bb9014dec45)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # 
https://github.com/0day-ci/linux/commit/c9873622761b42d977b48804bb0b4b9a7fbcd6b3
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Mitali-Borkar/Subject-PATCH-staging-media-meson-vdec-declare-u32-as-static-const/20210412-222025
        git checkout c9873622761b42d977b48804bb0b4b9a7fbcd6b3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

>> drivers/staging/media/meson/vdec/codec_h264.c:290:28: error: brackets are 
>> not allowed here; to declare an array, place the brackets after the 
>> identifier
           static const u32[] canvas3 = { ANCO_CANVAS_ADDR, 0 };
                           ~~        ^
                                     []
>> drivers/staging/media/meson/vdec/codec_h264.c:290:33: error: use of 
>> undeclared identifier 'ANCO_CANVAS_ADDR'
           static const u32[] canvas3 = { ANCO_CANVAS_ADDR, 0 };
                                          ^
   drivers/staging/media/meson/vdec/codec_h264.c:291:28: error: brackets are 
not allowed here; to declare an array, place the brackets after the identifier
           static const u32[] canvas4 = { 24, 0 };
                           ~~        ^
                                     []
>> drivers/staging/media/meson/vdec/codec_h264.c:293:28: error: passing 'const 
>> u32 []' to parameter of type 'u32 *' (aka 'unsigned int *') discards 
>> qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           amvdec_set_canvases(sess, canvas3, canvas4);
                                     ^~~~~~~
   drivers/staging/media/meson/vdec/vdec_helpers.h:20:8: note: passing argument 
to parameter 'reg_base' here
                           u32 reg_base[], u32 reg_num[]);
                               ^
   drivers/staging/media/meson/vdec/codec_h264.c:293:37: error: passing 'const 
u32 [2]' to parameter of type 'u32 *' (aka 'unsigned int *') discards 
qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           amvdec_set_canvases(sess, canvas3, canvas4);
                                              ^~~~~~~
   drivers/staging/media/meson/vdec/vdec_helpers.h:20:24: note: passing 
argument to parameter 'reg_num' here
                           u32 reg_base[], u32 reg_num[]);
                                               ^
   5 errors generated.


vim +290 drivers/staging/media/meson/vdec/codec_h264.c

   284  
   285  static void codec_h264_resume(struct amvdec_session *sess)
   286  {
   287          struct amvdec_core *core = sess->core;
   288          struct codec_h264 *h264 = sess->priv;
   289          u32 mb_width, mb_height, mb_total;
 > 290          static const u32[] canvas3 = { ANCO_CANVAS_ADDR, 0 };
   291          static const u32[] canvas4 = { 24, 0 };
   292  
 > 293          amvdec_set_canvases(sess, canvas3, canvas4);
   294  
   295          dev_dbg(core->dev, "max_refs = %u; actual_dpb_size = %u\n",
   296                  h264->max_refs, sess->num_dst_bufs);
   297  
   298          /* Align to a multiple of 4 macroblocks */
   299          mb_width = ALIGN(h264->mb_width, 4);
   300          mb_height = ALIGN(h264->mb_height, 4);
   301          mb_total = mb_width * mb_height;
   302  
   303          h264->ref_size = mb_total * MB_MV_SIZE * h264->max_refs;
   304          h264->ref_vaddr = dma_alloc_coherent(core->dev, h264->ref_size,
   305                                               &h264->ref_paddr, 
GFP_KERNEL);
   306          if (!h264->ref_vaddr) {
   307                  amvdec_abort(sess);
   308                  return;
   309          }
   310  
   311          /* Address to store the references' MVs */
   312          amvdec_write_dos(core, AV_SCRATCH_1, h264->ref_paddr);
   313          /* End of ref MV */
   314          amvdec_write_dos(core, AV_SCRATCH_4, h264->ref_paddr + 
h264->ref_size);
   315  
   316          amvdec_write_dos(core, AV_SCRATCH_0, (h264->max_refs << 24) |
   317                                               (sess->num_dst_bufs << 16) 
|
   318                                               ((h264->max_refs - 1) << 
8));
   319  }
   320  

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

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