Hi Bean, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on scsi/for-next] [also build test WARNING on next-20200526] [cannot apply to mkp-scsi/for-next v5.7-rc7] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Bean-Huo/scsi-ufs-cleanup-ufs-initialization-path/20200528-003043 base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next config: i386-randconfig-a003-20200527 (attached as .config) compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/list.h:9:0, from include/linux/async.h:12, from drivers/scsi/ufs/ufshcd.c:40: drivers/scsi/ufs/ufshcd.c: In function 'ufs_get_device_desc': include/linux/kernel.h:942:63: warning: comparison is always false due to limited range of data type [-Wtype-limits] #define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >) ^ include/linux/kernel.h:858:30: note: in definition of macro '__cmp' #define __cmp(x, y, op) ((x) op (y) ? (x) : (y)) ^ include/linux/kernel.h:942:27: note: in expansion of macro '__careful_cmp' #define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >) ^ >> drivers/scsi/ufs/ufshcd.c:6834:13: note: in expansion of macro 'max_t' buff_len = max_t(size_t, hba->desc_size[QUERY_DESC_IDN_DEVICE], ^ vim +/max_t +6834 drivers/scsi/ufs/ufshcd.c 6825 6826 static int ufs_get_device_desc(struct ufs_hba *hba) 6827 { 6828 int err; 6829 size_t buff_len; 6830 u8 model_index; 6831 u8 *desc_buf; 6832 struct ufs_dev_info *dev_info = &hba->dev_info; 6833 > 6834 buff_len = max_t(size_t, hba->desc_size[QUERY_DESC_IDN_DEVICE], 6835 QUERY_DESC_MAX_SIZE + 1); 6836 desc_buf = kmalloc(buff_len, GFP_KERNEL); 6837 if (!desc_buf) { 6838 err = -ENOMEM; 6839 goto out; 6840 } 6841 6842 err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf, 6843 hba->desc_size[QUERY_DESC_IDN_DEVICE]); 6844 if (err) { 6845 dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n", 6846 __func__, err); 6847 goto out; 6848 } 6849 6850 /* 6851 * getting vendor (manufacturerID) and Bank Index in big endian 6852 * format 6853 */ 6854 dev_info->wmanufacturerid = desc_buf[DEVICE_DESC_PARAM_MANF_ID] << 8 | 6855 desc_buf[DEVICE_DESC_PARAM_MANF_ID + 1]; 6856 6857 /* getting Specification Version in big endian format */ 6858 dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 | 6859 desc_buf[DEVICE_DESC_PARAM_SPEC_VER + 1]; 6860 6861 model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME]; 6862 6863 err = ufshcd_read_string_desc(hba, model_index, 6864 &dev_info->model, SD_ASCII_STD); 6865 if (err < 0) { 6866 dev_err(hba->dev, "%s: Failed reading Product Name. err = %d\n", 6867 __func__, err); 6868 goto out; 6869 } 6870 6871 ufs_fixup_device_setup(hba); 6872 6873 /* 6874 * Probe WB only for UFS-3.1 devices or UFS devices with quirk 6875 * UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled 6876 */ 6877 if (dev_info->wspecversion >= 0x310 || 6878 (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES)) 6879 ufshcd_wb_probe(hba, desc_buf); 6880 6881 /* 6882 * ufshcd_read_string_desc returns size of the string 6883 * reset the error value 6884 */ 6885 err = 0; 6886 6887 out: 6888 kfree(desc_buf); 6889 return err; 6890 } 6891 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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