tree: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git bleeding-edge head: 1cf26ab470eb62bb4f239eb0d9410f8c174bed6b commit: 72ad7b25e6357468b3f5306f2c716313a7664d39 [57/72] ACPICA: debugger: add field unit support for acpi_db_get_next_token config: x86_64-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-14) 7.4.0 reproduce: git checkout 72ad7b25e6357468b3f5306f2c716313a7664d39 # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/acpi/acpica/dbinput.c: In function 'acpi_db_get_next_token': >> drivers/acpi/acpica/dbinput.c:514:7: warning: multi-character character constant [-Wmultichar] case ' {': ^~~~ >> drivers/acpi/acpica/dbinput.c:514:2: warning: case label value exceeds maximum value for type case ' {': ^~~~ vim +514 drivers/acpi/acpica/dbinput.c 444 445 /******************************************************************************* 446 * 447 * FUNCTION: acpi_db_get_next_token 448 * 449 * PARAMETERS: string - Command buffer 450 * next - Return value, end of next token 451 * 452 * RETURN: Pointer to the start of the next token. 453 * 454 * DESCRIPTION: Command line parsing. Get the next token on the command line 455 * 456 ******************************************************************************/ 457 458 char *acpi_db_get_next_token(char *string, 459 char **next, acpi_object_type *return_type) 460 { 461 char *start; 462 u32 depth; 463 acpi_object_type type = ACPI_TYPE_INTEGER; 464 465 /* At end of buffer? */ 466 467 if (!string || !(*string)) { 468 return (NULL); 469 } 470 471 /* Remove any spaces at the beginning */ 472 473 if (*string == ' ') { 474 while (*string && (*string == ' ')) { 475 string++; 476 } 477 478 if (!(*string)) { 479 return (NULL); 480 } 481 } 482 483 switch (*string) { 484 case '"': 485 486 /* This is a quoted string, scan until closing quote */ 487 488 string++; 489 start = string; 490 type = ACPI_TYPE_STRING; 491 492 /* Find end of string */ 493 494 while (*string && (*string != '"')) { 495 string++; 496 } 497 break; 498 499 case '(': 500 501 /* This is the start of a buffer, scan until closing paren */ 502 503 string++; 504 start = string; 505 type = ACPI_TYPE_BUFFER; 506 507 /* Find end of buffer */ 508 509 while (*string && (*string != ')')) { 510 string++; 511 } 512 break; 513 > 514 case ' {': 515 516 /* This is the start of a field unit, scan until closing brace */ 517 518 string++; 519 start = string; 520 type = ACPI_TYPE_FIELD_UNIT; 521 522 /* Find end of buffer */ 523 524 while (*string && (*string != '}')) { 525 string++; 526 } 527 break; 528 529 case '[': 530 531 /* This is the start of a package, scan until closing bracket */ 532 533 string++; 534 depth = 1; 535 start = string; 536 type = ACPI_TYPE_PACKAGE; 537 538 /* Find end of package (closing bracket) */ 539 540 while (*string) { 541 542 /* Handle String package elements */ 543 544 if (*string == '"') { 545 /* Find end of string */ 546 547 string++; 548 while (*string && (*string != '"')) { 549 string++; 550 } 551 if (!(*string)) { 552 break; 553 } 554 } else if (*string == '[') { 555 depth++; /* A nested package declaration */ 556 } else if (*string == ']') { 557 depth--; 558 if (depth == 0) { /* Found final package closing bracket */ 559 break; 560 } 561 } 562 563 string++; 564 } 565 break; 566 567 default: 568 569 start = string; 570 571 /* Find end of token */ 572 573 while (*string && (*string != ' ')) { 574 string++; 575 } 576 break; 577 } 578 579 if (!(*string)) { 580 *next = NULL; 581 } else { 582 *string = 0; 583 *next = string + 1; 584 } 585 586 *return_type = type; 587 return (start); 588 } 589 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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