CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: linux-ker...@vger.kernel.org TO: Martin Kepplinger <martin.kepplin...@puri.sm> CC: Mauro Carvalho Chehab <mche...@kernel.org> CC: linux-me...@vger.kernel.org CC: Pavel Machek <pa...@ucw.cz> CC: Sakari Ailus <sakari.ai...@linux.intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 56e337f2cf1326323844927a04e9dbce9a244835 commit: e8c0882685f9152f0d729664a12bcbe749cb7736 media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera date: 5 months ago :::::: branch date: 21 hours ago :::::: commit date: 5 months ago config: riscv-randconfig-c006-20220307 (https://download.01.org/0day-ci/archive/20220316/202203162216.ysr2mny0-...@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c0882685f9152f0d729664a12bcbe749cb7736 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e8c0882685f9152f0d729664a12bcbe749cb7736 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) ^ ~ fs/xfs/xfs_icache.c:746:2: note: Value stored to 'error' is never read error = 0; ^ ~ fs/xfs/xfs_icache.c:1667:2: warning: Value stored to 'nr_found' is never read [clang-analyzer-deadcode.DeadStores] nr_found = 0; ^ ~ fs/xfs/xfs_icache.c:1667:2: note: Value stored to 'nr_found' is never read nr_found = 0; ^ ~ Suppressed 10 warnings (9 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 12 warnings generated. Suppressed 12 warnings (9 in non-user code, 3 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 17 warnings generated. drivers/media/pci/saa7164/saa7164-encoder.c:597:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = saa7164_encoder_pause_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-encoder.c:597:2: note: Value stored to 'ret' is never read ret = saa7164_encoder_pause_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-encoder.c:598:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = saa7164_encoder_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-encoder.c:598:2: note: Value stored to 'ret' is never read ret = saa7164_encoder_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 15 warnings (15 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 18 warnings generated. drivers/media/pci/saa7164/saa7164-vbi.c:281:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = saa7164_vbi_pause_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-vbi.c:281:2: note: Value stored to 'ret' is never read ret = saa7164_vbi_pause_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-vbi.c:282:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = saa7164_vbi_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-vbi.c:282:2: note: Value stored to 'ret' is never read ret = saa7164_vbi_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-vbi.c:381:3: warning: Value stored to 'result' is never read [clang-analyzer-deadcode.DeadStores] result = saa7164_vbi_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/pci/saa7164/saa7164-vbi.c:381:3: note: Value stored to 'result' is never read result = saa7164_vbi_acquire_port(port); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 15 warnings (15 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. drivers/media/i2c/ccs-pll.c:93:15: warning: Value stored to 's' during its initialization is never read [clang-analyzer-deadcode.DeadStores] const char *s = pll_string(br->which); ^ ~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/ccs-pll.c:93:15: note: Value stored to 's' during its initialization is never read const char *s = pll_string(br->which); ^ ~~~~~~~~~~~~~~~~~~~~~ Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 12 warnings generated. >> drivers/media/i2c/hi846.c:1494:21: warning: Value stored to 'client' during >> its initialization is never read [clang-analyzer-deadcode.DeadStores] struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); ^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/hi846.c:1494:21: note: Value stored to 'client' during its initialization is never read struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); ^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/media/i2c/hi846.c:1764:2: warning: Value stored to 'tgt_fps' is >> never read [clang-analyzer-deadcode.DeadStores] tgt_fps = hi846->cur_mode->fps; ^ ~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/hi846.c:1764:2: note: Value stored to 'tgt_fps' is never read tgt_fps = hi846->cur_mode->fps; ^ ~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/hi846.c:1805:21: warning: Value stored to 'client' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct i2c_client *client = v4l2_get_subdevdata(sd); ^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/hi846.c:1805:21: note: Value stored to 'client' during its initialization is never read struct i2c_client *client = v4l2_get_subdevdata(sd); ^~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. drivers/media/i2c/imx258.c:781:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/imx258.c:781:3: note: Value stored to 'ret' is never read ret = imx258_write_reg(imx258, IMX258_REG_TEST_PATTERN, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. fs/udf/balloc.c:543:13: warning: The result of the left shift is undefined because the left operand is negative [clang-analyzer-core.UndefinedBinaryOperatorResult] (etype << 30) | elen, 1); ^ fs/udf/balloc.c:680:6: note: Assuming the condition is false if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:680:2: note: Taking false branch if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) ^ fs/udf/balloc.c:685:11: note: Assuming the condition is true else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:685:7: note: Taking true branch else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) ^ fs/udf/balloc.c:686:15: note: Calling 'udf_table_prealloc_blocks' allocated = udf_table_prealloc_blocks(sb, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:510:6: note: Assuming 'first_block' is < field 's_partition_len' if (first_block >= sbi->s_partmaps[partition].s_partition_len) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:510:2: note: Taking false branch if (first_block >= sbi->s_partmaps[partition].s_partition_len) ^ fs/udf/balloc.c:514:6: note: Assuming field 'i_alloc_type' is equal to ICBTAG_FLAG_AD_SHORT if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:514:2: note: Taking true branch if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT) ^ fs/udf/balloc.c:527:9: note: 'first_block' is not equal to field 'logicalBlockNum' while (first_block != eloc.logicalBlockNum && ^~~~~~~~~~~ fs/udf/balloc.c:527:9: note: Left side of '&&' is true fs/udf/balloc.c:528:10: note: Value assigned to 'etype' (etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:528:9: note: Assuming the condition is false (etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:527:2: note: Loop condition is false. Execution continues on line 534 while (first_block != eloc.logicalBlockNum && ^ fs/udf/balloc.c:534:6: note: Assuming 'first_block' is equal to field 'logicalBlockNum' if (first_block == eloc.logicalBlockNum) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:534:2: note: Taking true branch if (first_block == eloc.logicalBlockNum) { ^ fs/udf/balloc.c:538:7: note: Assuming 'alloc_count' is > 'block_count' if (alloc_count > block_count) { ^~~~~~~~~~~~~~~~~~~~~~~~~ fs/udf/balloc.c:538:3: note: Taking true branch if (alloc_count > block_count) { ^ fs/udf/balloc.c:543:13: note: The result of the left shift is undefined because the left operand is negative (etype << 30) | elen, 1); ~~~~~ ^ Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. drivers/misc/habanalabs/gaudi/gaudi_coresight.c:770:31: warning: Value stored to 'input' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct hl_debug_params_spmu *input = params->input; ^~~~~ ~~~~~~~~~~~~~ drivers/misc/habanalabs/gaudi/gaudi_coresight.c:770:31: note: Value stored to 'input' during its initialization is never read struct hl_debug_params_spmu *input = params->input; ^~~~~ ~~~~~~~~~~~~~ Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. drivers/misc/habanalabs/common/debugfs.c:858:3: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores] rc = pci_enable_device(hdev->pdev); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/habanalabs/common/debugfs.c:858:3: note: Value stored to 'rc' is never read vim +/client +1494 drivers/media/i2c/hi846.c e8c0882685f9152 Martin Kepplinger 2021-09-06 1491 e8c0882685f9152 Martin Kepplinger 2021-09-06 1492 static int hi846_set_video_mode(struct hi846 *hi846, int fps) e8c0882685f9152 Martin Kepplinger 2021-09-06 1493 { e8c0882685f9152 Martin Kepplinger 2021-09-06 @1494 struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); e8c0882685f9152 Martin Kepplinger 2021-09-06 1495 u64 frame_length; e8c0882685f9152 Martin Kepplinger 2021-09-06 1496 int ret = 0; e8c0882685f9152 Martin Kepplinger 2021-09-06 1497 int dummy_lines; e8c0882685f9152 Martin Kepplinger 2021-09-06 1498 u64 link_freq = hi846_get_link_freq(hi846); e8c0882685f9152 Martin Kepplinger 2021-09-06 1499 e8c0882685f9152 Martin Kepplinger 2021-09-06 1500 dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__, e8c0882685f9152 Martin Kepplinger 2021-09-06 1501 hi846_get_link_freq(hi846)); e8c0882685f9152 Martin Kepplinger 2021-09-06 1502 e8c0882685f9152 Martin Kepplinger 2021-09-06 1503 do_div(link_freq, fps); e8c0882685f9152 Martin Kepplinger 2021-09-06 1504 frame_length = link_freq; e8c0882685f9152 Martin Kepplinger 2021-09-06 1505 do_div(frame_length, HI846_LINE_LENGTH); e8c0882685f9152 Martin Kepplinger 2021-09-06 1506 e8c0882685f9152 Martin Kepplinger 2021-09-06 1507 dummy_lines = (frame_length > hi846->cur_mode->frame_len) ? e8c0882685f9152 Martin Kepplinger 2021-09-06 1508 (frame_length - hi846->cur_mode->frame_len) : 0; e8c0882685f9152 Martin Kepplinger 2021-09-06 1509 e8c0882685f9152 Martin Kepplinger 2021-09-06 1510 frame_length = hi846->cur_mode->frame_len + dummy_lines; e8c0882685f9152 Martin Kepplinger 2021-09-06 1511 e8c0882685f9152 Martin Kepplinger 2021-09-06 1512 dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__, e8c0882685f9152 Martin Kepplinger 2021-09-06 1513 frame_length); e8c0882685f9152 Martin Kepplinger 2021-09-06 1514 e8c0882685f9152 Martin Kepplinger 2021-09-06 1515 hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret); e8c0882685f9152 Martin Kepplinger 2021-09-06 1516 hi846_write_reg_16(hi846, HI846_REG_LLP, e8c0882685f9152 Martin Kepplinger 2021-09-06 1517 HI846_LINE_LENGTH & 0xFFFF, &ret); e8c0882685f9152 Martin Kepplinger 2021-09-06 1518 e8c0882685f9152 Martin Kepplinger 2021-09-06 1519 return ret; e8c0882685f9152 Martin Kepplinger 2021-09-06 1520 } e8c0882685f9152 Martin Kepplinger 2021-09-06 1521 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
