CC: [email protected] CC: [email protected] BCC: [email protected] CC: [email protected] TO: Gabriel Somlo <[email protected]> CC: Ulf Hansson <[email protected]> CC: Kamil Rakoczy <[email protected]> CC: Maciej Dudek <[email protected]> CC: Paul Mackerras <[email protected]> CC: Joel Stanley <[email protected]> CC: Andy Shevchenko <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 1c24a186398f59c80adb9a967486b65c1423a59d commit: 92e099104729d7284d37bc0f49f8a9d30f3e0521 mmc: Add driver for LiteX's LiteSDCard interface date: 4 weeks ago :::::: branch date: 8 hours ago :::::: commit date: 4 weeks ago config: arm-randconfig-c002-20220328 (https://download.01.org/0day-ci/archive/20220330/[email protected]/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=92e099104729d7284d37bc0f49f8a9d30f3e0521 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 92e099104729d7284d37bc0f49f8a9d30f3e0521 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) 1 warning generated. Suppressed 1 warnings (1 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. 1 warning generated. Suppressed 1 warnings (1 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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/phy/cadence/phy-cadence-torrent.c:1352:25: warning: The result of the left shift is undefined because the left operand is negative [clang-analyzer-core.UndefinedBinaryOperatorResult] value |= ((~lane_mask) << PMA_TX_ELEC_IDLE_SHIFT) & ^ drivers/phy/cadence/phy-cadence-torrent.c:1476:6: note: 'ret' is 0 if (ret) { ^~~ drivers/phy/cadence/phy-cadence-torrent.c:1476:2: note: Taking false branch if (ret) { ^ drivers/phy/cadence/phy-cadence-torrent.c:1481:6: note: Assuming field 'set_lanes' is not equal to 0 if (opts->dp.set_lanes) { ^~~~~~~~~~~~~~~~~~ drivers/phy/cadence/phy-cadence-torrent.c:1481:2: note: Taking true branch if (opts->dp.set_lanes) { ^ drivers/phy/cadence/phy-cadence-torrent.c:1482:9: note: Calling 'cdns_torrent_dp_set_lanes' ret = cdns_torrent_dp_set_lanes(cdns_phy, &opts->dp); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/phy/cadence/phy-cadence-torrent.c:1352:25: note: The result of the left shift is undefined because the left operand is negative value |= ((~lane_mask) << PMA_TX_ELEC_IDLE_SHIFT) & ~~~~~~~~~~~~ ^ 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. 7 warnings generated. Suppressed 7 warnings (7 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. 1 warning generated. Suppressed 1 warnings (1 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. 1 warning generated. Suppressed 1 warnings (1 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/mmc/host/mmc_spi.c:354:4: warning: Value stored to 'end' is never read [clang-analyzer-deadcode.DeadStores] end = cp+1; ^ ~~~~ drivers/mmc/host/mmc_spi.c:354:4: note: Value stored to 'end' is never read end = cp+1; ^ ~~~~ drivers/mmc/host/mmc_spi.c:866:15: warning: Value stored to 'write_or_read' during its initialization is never read [clang-analyzer-deadcode.DeadStores] const char *write_or_read = (direction == DMA_TO_DEVICE) ? "write" : "read"; ^~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:866:15: note: Value stored to 'write_or_read' during its initialization is never read const char *write_or_read = (direction == DMA_TO_DEVICE) ? "write" : "read"; ^~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1076:4: warning: Value stored to 'status' is never read [clang-analyzer-deadcode.DeadStores] status = mmc_spi_command_send(host, mrq, &stop, 0); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1076:4: note: Value stored to 'status' is never read status = mmc_spi_command_send(host, mrq, &stop, 0); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1083:4: warning: Value stored to 'status' is never read [clang-analyzer-deadcode.DeadStores] status = mmc_spi_command_send(host, mrq, mrq->stop, 0); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1083:4: note: Value stored to 'status' is never read status = mmc_spi_command_send(host, mrq, mrq->stop, 0); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1238:3: warning: Value stored to 'status' is never read [clang-analyzer-deadcode.DeadStores] status = spi_setup(host->spi); ^ ~~~~~~~~~~~~~~~~~~~~ drivers/mmc/host/mmc_spi.c:1238:3: note: Value stored to 'status' is never read status = spi_setup(host->spi); ^ ~~~~~~~~~~~~~~~~~~~~ Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. >> drivers/mmc/host/litex_mmc.c:436:17: warning: Value stored to 'dev' during >> its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = mmc_dev(host->mmc); ^~~ drivers/mmc/host/litex_mmc.c:436:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = mmc_dev(host->mmc); ^~~ Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. 1 warning generated. Suppressed 1 warnings (1 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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 (7 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. 1 warning generated. Suppressed 1 warnings (1 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. Suppressed 7 warnings (7 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. drivers/gpu/drm/tegra/sor.c:809:7: warning: Value stored to 'value' is never read [clang-analyzer-deadcode.DeadStores] for (value = 0, i = 0; i < link->lanes; i++) { ^ ~ drivers/gpu/drm/tegra/sor.c:809:7: note: Value stored to 'value' is never read for (value = 0, i = 0; i < link->lanes; i++) { ^ ~ Suppressed 7 warnings (7 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/gpu/drm/tegra/dpaux.c:755:14: warning: The left operand of '!=' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult] if (status != connector_status_connected) ~~~~~~ ^ drivers/gpu/drm/tegra/dpaux.c:729:6: note: Assuming 'err' is >= 0 if (err < 0) ^~~~~~~ drivers/gpu/drm/tegra/dpaux.c:729:2: note: Taking false branch if (err < 0) ^ drivers/gpu/drm/tegra/dpaux.c:735:6: note: Assuming field 'panel' is non-null if (output->panel) { ^~~~~~~~~~~~~ drivers/gpu/drm/tegra/dpaux.c:735:2: note: Taking true branch if (output->panel) { ^ drivers/gpu/drm/tegra/dpaux.c:736:3: note: 'status' declared without an initial value enum drm_connector_status status; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/tegra/dpaux.c:738:7: note: Assuming field 'vdd' is null if (dpaux->vdd) { ^~~~~~~~~~ drivers/gpu/drm/tegra/dpaux.c:738:3: note: Taking false branch if (dpaux->vdd) { ^ drivers/gpu/drm/tegra/dpaux.c:746:10: note: Left side of '&&' is true while (time_before(jiffies, timeout)) { ^ include/linux/jiffies.h:108:26: note: expanded from macro 'time_before' #define time_before(a,b) time_after(b,a) ^ include/linux/jiffies.h:105:3: note: expanded from macro 'time_after' (typecheck(unsigned long, a) && \ ^ include/linux/typecheck.h:9:27: note: expanded from macro 'typecheck' #define typecheck(type,x) \ ^ drivers/gpu/drm/tegra/dpaux.c:746:10: note: Left side of '&&' is true while (time_before(jiffies, timeout)) { ^ include/linux/jiffies.h:108:26: note: expanded from macro 'time_before' #define time_before(a,b) time_after(b,a) ^ include/linux/jiffies.h:105:3: note: expanded from macro 'time_after' (typecheck(unsigned long, a) && \ vim +/dev +436 drivers/mmc/host/litex_mmc.c 92e099104729d72 Gabriel Somlo 2022-01-13 433 92e099104729d72 Gabriel Somlo 2022-01-13 434 static void litex_mmc_setclk(struct litex_mmc_host *host, unsigned int freq) 92e099104729d72 Gabriel Somlo 2022-01-13 435 { 92e099104729d72 Gabriel Somlo 2022-01-13 @436 struct device *dev = mmc_dev(host->mmc); 92e099104729d72 Gabriel Somlo 2022-01-13 437 u32 div; 92e099104729d72 Gabriel Somlo 2022-01-13 438 92e099104729d72 Gabriel Somlo 2022-01-13 439 div = freq ? host->ref_clk / freq : 256U; 92e099104729d72 Gabriel Somlo 2022-01-13 440 div = roundup_pow_of_two(div); 92e099104729d72 Gabriel Somlo 2022-01-13 441 div = clamp(div, 2U, 256U); 92e099104729d72 Gabriel Somlo 2022-01-13 442 dev_dbg(dev, "sd_clk_freq=%d: set to %d via div=%d\n", 92e099104729d72 Gabriel Somlo 2022-01-13 443 freq, host->ref_clk / div, div); 92e099104729d72 Gabriel Somlo 2022-01-13 444 litex_write16(host->sdphy + LITEX_PHY_CLOCKERDIV, div); 92e099104729d72 Gabriel Somlo 2022-01-13 445 host->sd_clk = freq; 92e099104729d72 Gabriel Somlo 2022-01-13 446 } 92e099104729d72 Gabriel Somlo 2022-01-13 447 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
