tree: https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git mips-next head: df3da04880b45b059b8b064c2dd67289a793109e commit: 7784cac697351f0cc0a4bb619594c0c99348c5aa [68/69] MIPS: cmdline: Clean up boot_command_line initialization config: mips-fuloong2e_defconfig (attached as .config) compiler: mips64el-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 7784cac697351f0cc0a4bb619594c0c99348c5aa # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=mips If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/mips/kernel/setup.c: In function 'bootcmdline_scan_chosen': p = of_get_flat_dt_prop(node, "bootargs", &l); ^~~~~~~~~~~~~~~~~~~ vm_get_page_prot p = of_get_flat_dt_prop(node, "bootargs", &l); ^ arch/mips/kernel/setup.c: In function 'bootcmdline_init': arch/mips/kernel/setup.c:582:30: error: 'builtin_cmdline' undeclared (first use in this function); did you mean 'builtin_driver'? strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); ^~~~~~~~~~~~~~~ builtin_driver arch/mips/kernel/setup.c:582:30: note: each undeclared identifier is reported only once for each function it appears in of_scan_flat_dt(bootcmdline_scan_chosen, &dt_bootargs); ^~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +563 arch/mips/kernel/setup.c 551 552 static int __init bootcmdline_scan_chosen(unsigned long node, const char *uname, 553 int depth, void *data) 554 { 555 bool *dt_bootargs = data; 556 const char *p; 557 int l; 558 559 if (depth != 1 || !data || 560 (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0)) 561 return 0; 562 564 if (p != NULL && l > 0) { 565 bootcmdline_append(p, min(l, COMMAND_LINE_SIZE)); 566 *dt_bootargs = true; 567 } 568 569 return 1; 570 } 571 572 static void __init bootcmdline_init(char **cmdline_p) 573 { 574 bool dt_bootargs = false; 575 576 /* 577 * If CMDLINE_OVERRIDE is enabled then initializing the command line is 578 * trivial - we simply use the built-in command line unconditionally & 579 * unmodified. 580 */ 581 if (IS_ENABLED(CONFIG_CMDLINE_OVERRIDE)) { 582 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); 583 return; 584 } 585 586 /* 587 * If the user specified a built-in command line & 588 * MIPS_CMDLINE_BUILTIN_EXTEND, then the built-in command line is 589 * prepended to arguments from the bootloader or DT so we'll copy them 590 * to the start of boot_command_line here. Otherwise, empty 591 * boot_command_line to undo anything early_init_dt_scan_chosen() did. 592 */ 593 if (IS_ENABLED(CONFIG_MIPS_CMDLINE_BUILTIN_EXTEND)) 594 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); 595 else 596 boot_command_line[0] = 0; 597 598 /* 599 * If we're configured to take boot arguments from DT, look for those 600 * now. 601 */ 602 if (IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_DTB)) 604 605 /* 606 * If we didn't get any arguments from DT (regardless of whether that's 607 * because we weren't configured to look for them, or because we looked 608 * & found none) then we'll take arguments from the bootloader. 609 * plat_mem_setup() should have filled arcs_cmdline with arguments from 610 * the bootloader. 611 */ 612 if (IS_ENABLED(CONFIG_MIPS_CMDLINE_DTB_EXTEND) || !dt_bootargs) 613 bootcmdline_append(arcs_cmdline, COMMAND_LINE_SIZE); 614 615 /* 616 * If the user specified a built-in command line & we didn't already 617 * prepend it, we append it to boot_command_line here. 618 */ 619 if (IS_ENABLED(CONFIG_CMDLINE_BOOL) && 620 !IS_ENABLED(CONFIG_MIPS_CMDLINE_BUILTIN_EXTEND)) 621 bootcmdline_append(builtin_cmdline, COMMAND_LINE_SIZE); 622 } 623 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation