tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: 5d457fe6aeaab9d0a1665eafc8af7139bc6b6f2e commit: 5d457fe6aeaab9d0a1665eafc8af7139bc6b6f2e [24/24] fw_cfg: fix sparse warnings around FW_CFG_FILE_DIR read config: i386-randconfig-x015-201806 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 5d457fe6aeaab9d0a1665eafc8af7139bc6b6f2e # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/firmware/qemu_fw_cfg.c: In function 'fw_cfg_register_dir_entries': >> drivers/firmware/qemu_fw_cfg.c:499:22: error: storage size of 'files' isn't known struct fw_cfg_files files; ^~~~~ drivers/firmware/qemu_fw_cfg.c:499:22: warning: unused variable 'files' [-Wunused-variable] vim +499 drivers/firmware/qemu_fw_cfg.c 493 494 /* iterate over all fw_cfg directory entries, registering each one */ 495 static int fw_cfg_register_dir_entries(void) 496 { 497 int ret = 0; 498 u32 count, i; > 499 struct fw_cfg_files files; 500 struct fw_cfg_file *dir; 501 size_t dir_size; 502 503 fw_cfg_read_blob(FW_CFG_FILE_DIR, &files.count, 0, sizeof(files.count)); 504 count = be32_to_cpu(files.count); 505 dir_size = count * sizeof(struct fw_cfg_file); 506 507 dir = kmalloc(dir_size, GFP_KERNEL); 508 if (!dir) 509 return -ENOMEM; 510 511 fw_cfg_read_blob(FW_CFG_FILE_DIR, dir, sizeof(files.count), dir_size); 512 513 for (i = 0; i < count; i++) { 514 ret = fw_cfg_register_file(&dir[i]); 515 if (ret) 516 break; 517 } 518 519 kfree(dir); 520 return ret; 521 } 522 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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