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SubjectRe: [PATCH 2/2] media: meson: vdec: add HEVC decode codec
Hi Christian,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on media-tree/master]
[also build test WARNING on linus/master v6.2-rc5 next-20230123]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Christian-Hewitt/media-meson-vdec-implement-10bit-bitstream-handling/20230123-213323
base: git://linuxtv.org/media_tree.git master
patch link: https://lore.kernel.org/r/20230123133113.3254659-3-christianshewitt%40gmail.com
patch subject: [PATCH 2/2] media: meson: vdec: add HEVC decode codec
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230124/202301240007.NkZA19qq-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0
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/498d420e9c7cdc6e694be643c47ee69c8b5b2142
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Christian-Hewitt/media-meson-vdec-implement-10bit-bitstream-handling/20230123-213323
git checkout 498d420e9c7cdc6e694be643c47ee69c8b5b2142
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/staging/

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

All warnings (new ones prefixed by >>):

drivers/staging/media/meson/vdec/codec_hevc.c: In function 'codec_hevc_set_mpred_mv':
>> drivers/staging/media/meson/vdec/codec_hevc.c:1002:13: warning: variable 'val' set but not used [-Wunused-but-set-variable]
1002 | u32 val;
| ^~~


vim +/val +1002 drivers/staging/media/meson/vdec/codec_hevc.c

990
991 static void codec_hevc_set_mpred_mv(struct amvdec_core *core,
992 struct codec_hevc *hevc,
993 struct hevc_frame *frame,
994 struct hevc_frame *col_frame)
995 {
996 union rpm_param *param = &hevc->rpm_param;
997 u32 lcu_size_log2 = ilog2(hevc->lcu_size);
998 u32 mv_mem_unit = lcu_size_log2 == 6 ? 0x200 :
999 lcu_size_log2 == 5 ? 0x80 : 0x20;
1000 dma_addr_t col_mv_rd_start_addr, col_mv_rd_ptr, col_mv_rd_end_addr;
1001 dma_addr_t mpred_mv_wr_ptr;
> 1002 u32 val;
1003
1004 val = amvdec_read_dos(core, HEVC_MPRED_CURR_LCU);
1005
1006 col_mv_rd_start_addr = codec_hevc_get_frame_mv_paddr(hevc, col_frame);
1007 mpred_mv_wr_ptr = codec_hevc_get_frame_mv_paddr(hevc, frame) +
1008 (hevc->slice_addr * mv_mem_unit);
1009 col_mv_rd_ptr = col_mv_rd_start_addr +
1010 (hevc->slice_addr * mv_mem_unit);
1011 col_mv_rd_end_addr = col_mv_rd_start_addr +
1012 (hevc->lcu_total * mv_mem_unit);
1013
1014 amvdec_write_dos(core, HEVC_MPRED_MV_WR_START_ADDR,
1015 codec_hevc_get_frame_mv_paddr(hevc, frame));
1016 amvdec_write_dos(core, HEVC_MPRED_MV_RD_START_ADDR,
1017 col_mv_rd_start_addr);
1018
1019 if (param->p.slice_segment_address == 0) {
1020 amvdec_write_dos(core, HEVC_MPRED_ABV_START_ADDR,
1021 hevc->workspace_paddr + MPRED_ABV_OFFSET);
1022 amvdec_write_dos(core, HEVC_MPRED_MV_WPTR, mpred_mv_wr_ptr);
1023 amvdec_write_dos(core, HEVC_MPRED_MV_RPTR,
1024 col_mv_rd_start_addr);
1025 } else {
1026 amvdec_write_dos(core, HEVC_MPRED_MV_RPTR, col_mv_rd_ptr);
1027 }
1028
1029 amvdec_write_dos(core, HEVC_MPRED_MV_RD_END_ADDR, col_mv_rd_end_addr);
1030 }
1031

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

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