Hi Wolfram, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on tegra/for-next] [also build test ERROR on v5.10-rc3 next-20201113] [cannot apply to ulf.hansson-mmc/next mmc/mmc-next] [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] url: https://github.com/0day-ci/linux/commits/Wolfram-Sang/mmc-sdhci-tegra-fix... base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next config: h8300-randconfig-c004-20201113 (attached as .config) compiler: h8300-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/d5481f1c9768ea4e5a43617ef5a853dd7... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Wolfram-Sang/mmc-sdhci-tegra-fix-wrong-unit-with-busy_timeout/20201113-205511 git checkout d5481f1c9768ea4e5a43617ef5a853dd716d00f1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/mmc/host/sdhci-tegra.c: In function 'tegra_sdhci_set_timeout': 1275 | if (cmd && cmd->busy_timeout >= 11 * MSECS_PER_SEC) | ^~~~~~~~~~~~~ | MSEC_PER_SEC drivers/mmc/host/sdhci-tegra.c:1275:39: note: each undeclared identifier is reported only once for each function it appears in vim +1275 drivers/mmc/host/sdhci-tegra.c 1255 1256 static void tegra_sdhci_set_timeout(struct sdhci_host *host, 1257 struct mmc_command *cmd) 1258 { 1259 u32 val; 1260 1261 /* 1262 * HW busy detection timeout is based on programmed data timeout 1263 * counter and maximum supported timeout is 11s which may not be 1264 * enough for long operations like cache flush, sleep awake, erase. 1265 * 1266 * ERASE_TIMEOUT_LIMIT bit of VENDOR_MISC_CTRL register allows 1267 * host controller to wait for busy state until the card is busy 1268 * without HW timeout. 1269 * 1270 * So, use infinite busy wait mode for operations that may take 1271 * more than maximum HW busy timeout of 11s otherwise use finite 1272 * busy wait mode. 1273 */ 1274 val = sdhci_readl(host, SDHCI_TEGRA_VENDOR_MISC_CTRL); 1276 val |= SDHCI_MISC_CTRL_ERASE_TIMEOUT_LIMIT; 1277 else 1278 val &= ~SDHCI_MISC_CTRL_ERASE_TIMEOUT_LIMIT; 1279 sdhci_writel(host, val, SDHCI_TEGRA_VENDOR_MISC_CTRL); 1280 1281 __sdhci_set_timeout(host, cmd); 1282 } 1283 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org