Hi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.8-rc1 next-20200616] [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/yunaixin03610-163-com/Adding-Hua... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a5dc8300df75e8b8384b4c82225f1e4a0b4d9b55 :::::: branch date: 23 hours ago :::::: commit date: 23 hours ago compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; cppcheck warnings: (new ones prefixed by >>) UNUSED(ent); ^ UNUSED(pdev); ^ UNUSED(state); ^ drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:500:2: warning: Redundant assignment of 'pdev' to itself. [selfAssignment] UNUSED(pdev); ^ REGION_DIR_INPUT + (region & REGION_INDEX_MASK)); ^ drivers/net/ethernet/huawei/bma/edma_drv/bma_pci.c:158:55: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned] (void)pci_write_config_dword(pdev, ATU_REGION_CTRL2, REGION_ENABLE); ^ -- len += sprintf(buf + len, "lost_count :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:65:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "b2h_int :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:67:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "h2b_int :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:69:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "dma_count :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:71:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "recv_bytes :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:73:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "send_bytes :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:75:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "recv_pkgs :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:77:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "send_pkgs :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:79:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "drop_pkgs :%dn", ^ drivers/net/ethernet/huawei/bma/edma_drv/edma_host.c:81:9: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint] len += sprintf(buf + len, "fail_count :%dn", ^ if (!data || count <= 0) ^ drivers/net/ethernet/huawei/bma/cdev_drv/bma_cdev.c:346:21: warning: Checking if unsigned variable 'count' is less than zero. [unsignedLessThanZero] if (!data || count <= 0) ^ # https://github.com/0day-ci/linux/commit/d0965c4179b69ddd204c1f795f0d6ac08... git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout d0965c4179b69ddd204c1f795f0d6ac080c657af vim +122 drivers/net/ethernet/huawei/bma/cdev_drv/bma_cdev.c d0965c4179b69d yunaixin 2020-06-15 92 d0965c4179b69d yunaixin 2020-06-15 93 static int cdev_param_get_statics(char *buf, const struct kernel_param *kp) d0965c4179b69d yunaixin 2020-06-15 94 { d0965c4179b69d yunaixin 2020-06-15 95 int len = 0; d0965c4179b69d yunaixin 2020-06-15 96 int i = 0; d0965c4179b69d yunaixin 2020-06-15 97 __kernel_time_t running_time = 0; d0965c4179b69d yunaixin 2020-06-15 98 d0965c4179b69d yunaixin 2020-06-15 99 if (!buf) d0965c4179b69d yunaixin 2020-06-15 100 return 0; d0965c4179b69d yunaixin 2020-06-15 101 d0965c4179b69d yunaixin 2020-06-15 102 GET_SYS_SECONDS(running_time); d0965c4179b69d yunaixin 2020-06-15 103 running_time -= g_cdev_set.init_time; d0965c4179b69d yunaixin 2020-06-15 104 len += sprintf(buf + len, d0965c4179b69d yunaixin 2020-06-15 105 "============================CDEV_DRIVER_INFO=======================\n"); d0965c4179b69d yunaixin 2020-06-15 106 len += sprintf(buf + len, "version :%s\n", CDEV_VERSION); d0965c4179b69d yunaixin 2020-06-15 107 d0965c4179b69d yunaixin 2020-06-15 108 len += sprintf(buf + len, "running_time :%luD %02lu:%02lu:%02lu\n", d0965c4179b69d yunaixin 2020-06-15 109 running_time / (SECONDS_PER_DAY), d0965c4179b69d yunaixin 2020-06-15 110 running_time % (SECONDS_PER_DAY) / SECONDS_PER_HOUR, d0965c4179b69d yunaixin 2020-06-15 111 running_time % SECONDS_PER_HOUR / SECONDS_PER_MINUTE, d0965c4179b69d yunaixin 2020-06-15 112 running_time % SECONDS_PER_MINUTE); d0965c4179b69d yunaixin 2020-06-15 113 d0965c4179b69d yunaixin 2020-06-15 114 for (i = 0; i < g_cdev_set.dev_num; i++) { d0965c4179b69d yunaixin 2020-06-15 115 len += sprintf(buf + len, d0965c4179b69d yunaixin 2020-06-15 116 "===================================================\n"); d0965c4179b69d yunaixin 2020-06-15 117 len += sprintf(buf + len, "name :%s\n", d0965c4179b69d yunaixin 2020-06-15 118 g_cdev_set.dev_list[i].dev_name); d0965c4179b69d yunaixin 2020-06-15 119 len += d0965c4179b69d yunaixin 2020-06-15 120 sprintf(buf + len, "dev_id :%08x\n", d0965c4179b69d yunaixin 2020-06-15 121 g_cdev_set.dev_list[i].dev_id); d0965c4179b69d yunaixin 2020-06-15 @122 len += sprintf(buf + len, "type :%u\n", d0965c4179b69d yunaixin 2020-06-15 123 g_cdev_set.dev_list[i].type); d0965c4179b69d yunaixin 2020-06-15 124 len += sprintf(buf + len, "status :%s\n", d0965c4179b69d yunaixin 2020-06-15 125 g_cdev_set.dev_list[i].s.open_status == d0965c4179b69d yunaixin 2020-06-15 126 1 ? "open" : "close"); d0965c4179b69d yunaixin 2020-06-15 127 len += sprintf(buf + len, "send_pkgs :%u\n", d0965c4179b69d yunaixin 2020-06-15 128 g_cdev_set.dev_list[i].s.send_pkgs); d0965c4179b69d yunaixin 2020-06-15 129 len += d0965c4179b69d yunaixin 2020-06-15 130 sprintf(buf + len, "send_bytes:%u\n", d0965c4179b69d yunaixin 2020-06-15 131 g_cdev_set.dev_list[i].s.send_bytes); d0965c4179b69d yunaixin 2020-06-15 132 len += sprintf(buf + len, "send_failed_count:%u\n", d0965c4179b69d yunaixin 2020-06-15 133 g_cdev_set.dev_list[i].s.send_failed_count); d0965c4179b69d yunaixin 2020-06-15 134 len += sprintf(buf + len, "recv_pkgs :%u\n", d0965c4179b69d yunaixin 2020-06-15 135 g_cdev_set.dev_list[i].s.recv_pkgs); d0965c4179b69d yunaixin 2020-06-15 136 len += sprintf(buf + len, "recv_bytes:%u\n", d0965c4179b69d yunaixin 2020-06-15 137 g_cdev_set.dev_list[i].s.recv_bytes); d0965c4179b69d yunaixin 2020-06-15 138 len += sprintf(buf + len, "recv_failed_count:%u\n", d0965c4179b69d yunaixin 2020-06-15 139 g_cdev_set.dev_list[i].s.recv_failed_count); d0965c4179b69d yunaixin 2020-06-15 140 } d0965c4179b69d yunaixin 2020-06-15 141 d0965c4179b69d yunaixin 2020-06-15 142 return len; d0965c4179b69d yunaixin 2020-06-15 143 } d0965c4179b69d yunaixin 2020-06-15 144 module_param_call(statistics, NULL, cdev_param_get_statics, &debug, 0444); d0965c4179b69d yunaixin 2020-06-15 145 MODULE_PARM_DESC(statistics, "Statistics info of cdev driver,readonly"); d0965c4179b69d yunaixin 2020-06-15 146 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org