Hi Chevron, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on c9e6606c7fe92b50a02ce51dda82586ebdf99b48] url: https://github.com/0day-ci/linux/commits/Chevron-Li/mmc-sdhci-msm-fix-Qua... base: c9e6606c7fe92b50a02ce51dda82586ebdf99b48 config: arm64-randconfig-s032-20220118 (https://download.01.org/0day-ci/archive/20220122/202201220601.vDkqlC2r-lk...) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/8916351ffe4bd538ba3bf2c5e16a151fb... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chevron-Li/mmc-sdhci-msm-fix-Qualcomm-sd-host-7180-SD-card-compatibility-issue/20220121-191113 git checkout 8916351ffe4bd538ba3bf2c5e16a151fb47674fe # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/mmc/host/sdhci-msm.c: note: in included file: drivers/mmc/host/sdhci-bayhub.c:2945:40: sparse: sparse: Using plain integer as NULL pointer drivers/mmc/host/sdhci-bayhub.c:2945:43: sparse: sparse: Using plain integer as NULL pointer drivers/mmc/host/sdhci-bayhub.c:2945:46: sparse: sparse: Using plain integer as NULL pointer vim +1498 drivers/mmc/host/sdhci-bayhub.c 1480 1481 static bool ggc_read_registers_ext(struct sdhci_host *host, 1482 bool *card_status, bool *read_status, 1483 struct ggc_reg_op *gg_reg_arr, u8 num) 1484 { 1485 u8 get_idx = 0; 1486 bool ret = false; 1487 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 1488 struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host); 1489 struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host); 1490 1491 if (read_status) 1492 *read_status = false; 1493 if (card_status) 1494 *card_status = false; 1495 1496 memset(ggc->cur_read_buf, 0, 512); 1497 ret = gg_emulator_read_ext(host, card_status, read_status, ggc->cur_read_buf, 512); 1499 goto exit; 1500 1501 for (get_idx = 0; get_idx < num; get_idx++) 1502 (gg_reg_arr + get_idx)->value = 1503 _read_status_data_read_register(ggc->cur_read_buf, (gg_reg_arr + get_idx)); 1504 1505 exit: 1506 return ret; 1507 } 1508 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org