[hverkuil-media-tree:for-v6.8c 199/204] drivers/staging/media/rkvdec/rkvdec-hevc.c:429:83: warning: variable 'new_value' set but not used

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

tree:   git://linuxtv.org/hverkuil/media_tree.git for-v6.8c
head:   9c2abee4a6b8ceaf853c15f135d5fa28ae60d0a7
commit: 8c17b9a51c9d965ea28067f61fb321f2618dd5ed [199/204] media: rkvdec: Add HEVC backend
config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20231108/202311080826.DOL8PLZS-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231108/202311080826.DOL8PLZS-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/202311080826.DOL8PLZS-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/staging/media/rkvdec/rkvdec-hevc.c: In function 'transpose_and_flatten_matrices':
>> drivers/staging/media/rkvdec/rkvdec-hevc.c:429:83: warning: variable 'new_value' set but not used [-Wunused-but-set-variable]
     429 |         int i, j, row, x_offset, matrix_offset, rot_index, y_offset, matrix_size, new_value;
         |                                                                                   ^~~~~~~~~


vim +/new_value +429 drivers/staging/media/rkvdec/rkvdec-hevc.c

   416	
   417	/*
   418	 * Flip one or more matrices along their main diagonal and flatten them
   419	 * before writing it to the memory.
   420	 * Convert:
   421	 * ABCD         AEIM
   422	 * EFGH     =>  BFJN     =>     AEIMBFJNCGKODHLP
   423	 * IJKL         CGKO
   424	 * MNOP         DHLP
   425	 */
   426	static void transpose_and_flatten_matrices(u8 *output, const u8 *input,
   427						   int matrices, int row_length)
   428	{
 > 429		int i, j, row, x_offset, matrix_offset, rot_index, y_offset, matrix_size, new_value;
   430	
   431		matrix_size = row_length * row_length;
   432		for (i = 0; i < matrices; i++) {
   433			row = 0;
   434			x_offset = 0;
   435			matrix_offset = i * matrix_size;
   436			for (j = 0; j < matrix_size; j++) {
   437				y_offset = j - (row * row_length);
   438				rot_index = y_offset * row_length + x_offset;
   439				new_value = *(input + i * matrix_size + j);
   440				output[matrix_offset + rot_index] = *(input + i * matrix_size + j);
   441				if ((j + 1) % row_length == 0) {
   442					row += 1;
   443					x_offset += 1;
   444				}
   445			}
   446		}
   447	}
   448	

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