[kbuild-all] [staging:staging-testing 704/705] drivers/comedi/drivers/jr3_pci.c:507:22: warning: variable 'min_full_scale' set but not used

Hi Greg, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: 71d3edc61e29e45b613b841108688d711846f969 commit: 8ffdff6a8cfbdc174a3a390b6f825a277b5bb895 [704/705] staging: comedi: move out of staging directory config: parisc-randconfig-r022-20210415 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit... git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git git fetch --no-tags staging staging-testing git checkout 8ffdff6a8cfbdc174a3a390b6f825a277b5bb895 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/comedi/drivers/jr3_pci.c: In function 'jr3_pci_poll_subdevice': 507 | struct six_axis_t min_full_scale; | ^~~~~~~~~~~~~~ vim +/min_full_scale +507 drivers/comedi/drivers/jr3_pci.c 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 437 d5e59c967830f9 drivers/staging/comedi/drivers/jr3_pci.c Anson Jacob 2016-08-26 438 static struct jr3_pci_poll_delay d5e59c967830f9 drivers/staging/comedi/drivers/jr3_pci.c Anson Jacob 2016-08-26 439 jr3_pci_poll_subdevice(struct comedi_subdevice *s) 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 440 { 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 441 struct jr3_pci_subdev_private *spriv = s->private; da1331a50315a0 drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 442 struct jr3_pci_poll_delay result = poll_delay_min_max(1000, 2000); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 443 struct jr3_sensor __iomem *sensor; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 444 u16 model_no; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 445 u16 serial_no; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 446 int errors; b1f68dc1d61015 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2009-09-21 447 int i; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 448 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 449 sensor = spriv->sensor; 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 450 errors = get_u16(&sensor->errors); 7803d8e05d63d7 drivers/staging/comedi/drivers/jr3_pci.c Kumar Amit Mehta 2012-11-07 451 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 452 if (errors != spriv->errors) 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 453 spriv->errors = errors; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 454 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 455 /* Sensor communication lost? force poll mode */ 7803d8e05d63d7 drivers/staging/comedi/drivers/jr3_pci.c Kumar Amit Mehta 2012-11-07 456 if (errors & (watch_dog | watch_dog2 | sensor_change)) 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 457 spriv->state = state_jr3_poll; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 458 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 459 switch (spriv->state) { 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 460 case state_jr3_poll: 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 461 model_no = get_u16(&sensor->model_no); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 462 serial_no = get_u16(&sensor->serial_no); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 463 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 464 if ((errors & (watch_dog | watch_dog2)) || 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 465 model_no == 0 || serial_no == 0) { 2696fb57e6af65 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-27 466 /* abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 467 * Still no sensor, keep on polling. 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 468 * Since it takes up to 10 seconds for offsets to 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 469 * stabilize, polling each second should suffice. 2696fb57e6af65 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-27 470 */ 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 471 } else { 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 472 spriv->retries = 0; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 473 spriv->state = state_jr3_init_wait_for_offset; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 474 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 475 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 476 case state_jr3_init_wait_for_offset: 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 477 spriv->retries++; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 478 if (spriv->retries < 10) { 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 479 /* 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 480 * Wait for offeset to stabilize 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 481 * (< 10 s according to manual) 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 482 */ 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 483 } else { 0a44493fb18738 drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 484 struct jr3_pci_transform transf; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 485 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 486 spriv->model_no = get_u16(&sensor->model_no); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 487 spriv->serial_no = get_u16(&sensor->serial_no); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 488 2696fb57e6af65 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-27 489 /* Transformation all zeros */ b1f68dc1d61015 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2009-09-21 490 for (i = 0; i < ARRAY_SIZE(transf.link); i++) { 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 491 transf.link[i].link_type = (enum link_types)0; b1f68dc1d61015 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2009-09-21 492 transf.link[i].link_amount = 0; b1f68dc1d61015 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2009-09-21 493 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 494 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 495 set_transforms(sensor, &transf, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 496 use_transform(sensor, 0); 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 497 spriv->state = state_jr3_init_transform_complete; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 498 /* Allow 20 ms for completion */ abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 499 result = poll_delay_min_max(20, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 500 } abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 501 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 502 case state_jr3_init_transform_complete: 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 503 if (!is_complete(sensor)) { 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 504 result = poll_delay_min_max(20, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 505 } else { 2696fb57e6af65 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-27 506 /* Set full scale */ 050509fa558306 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-16 @507 struct six_axis_t min_full_scale; 050509fa558306 drivers/staging/comedi/drivers/jr3_pci.c Bill Pemberton 2009-03-16 508 struct six_axis_t max_full_scale; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 509 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 510 min_full_scale = get_min_full_scales(sensor); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 511 max_full_scale = get_max_full_scales(sensor); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 512 set_full_scales(sensor, max_full_scale); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 513 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 514 spriv->state = state_jr3_init_set_full_scale_complete; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 515 /* Allow 20 ms for completion */ abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 516 result = poll_delay_min_max(20, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 517 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 518 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 519 case state_jr3_init_set_full_scale_complete: 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 520 if (!is_complete(sensor)) { 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 521 result = poll_delay_min_max(20, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 522 } else { 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 523 struct force_array __iomem *fs = &sensor->full_scale; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 524 union jr3_pci_single_range *r = spriv->range; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 525 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 526 /* Use ranges in kN or we will overflow around 2000N! */ 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 527 r[0].l.range[0].min = -get_s16(&fs->fx) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 528 r[0].l.range[0].max = get_s16(&fs->fx) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 529 r[1].l.range[0].min = -get_s16(&fs->fy) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 530 r[1].l.range[0].max = get_s16(&fs->fy) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 531 r[2].l.range[0].min = -get_s16(&fs->fz) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 532 r[2].l.range[0].max = get_s16(&fs->fz) * 1000; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 533 r[3].l.range[0].min = -get_s16(&fs->mx) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 534 r[3].l.range[0].max = get_s16(&fs->mx) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 535 r[4].l.range[0].min = -get_s16(&fs->my) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 536 r[4].l.range[0].max = get_s16(&fs->my) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 537 r[5].l.range[0].min = -get_s16(&fs->mz) * 100; 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 538 /* the next five are questionable */ 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 539 r[5].l.range[0].max = get_s16(&fs->mz) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 540 r[6].l.range[0].min = -get_s16(&fs->v1) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 541 r[6].l.range[0].max = get_s16(&fs->v1) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 542 r[7].l.range[0].min = -get_s16(&fs->v2) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 543 r[7].l.range[0].max = get_s16(&fs->v2) * 100; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 544 r[8].l.range[0].min = 0; 4af8c8195188b5 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-02-17 545 r[8].l.range[0].max = 65535; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 546 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 547 use_offset(sensor, 0); 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 548 spriv->state = state_jr3_init_use_offset_complete; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 549 /* Allow 40 ms for completion */ abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 550 result = poll_delay_min_max(40, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 551 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 552 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 553 case state_jr3_init_use_offset_complete: 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 554 if (!is_complete(sensor)) { 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 555 result = poll_delay_min_max(20, 100); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 556 } else { 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 557 set_s16(&sensor->offsets.fx, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 558 set_s16(&sensor->offsets.fy, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 559 set_s16(&sensor->offsets.fz, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 560 set_s16(&sensor->offsets.mx, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 561 set_s16(&sensor->offsets.my, 0); 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 562 set_s16(&sensor->offsets.mz, 0); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 563 713eab88c66de4 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2017-03-08 564 set_offset(sensor); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 565 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 566 spriv->state = state_jr3_done; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 567 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 568 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 569 case state_jr3_done: 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 570 result = poll_delay_min_max(10000, 20000); 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 571 break; abcdc99f7cb387 drivers/staging/comedi/drivers/jr3_pci.c Ian Abbott 2012-11-01 572 default: 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 573 break; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 574 } 01fca4732b98ab drivers/staging/comedi/drivers/jr3_pci.c H Hartley Sweeten 2014-03-07 575 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 576 return result; 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 577 } 07b509e6584a55 drivers/staging/comedi/drivers/jr3_pci.c Anders Blomdell 2009-02-12 578 :::::: The code at line 507 was first introduced by commit :::::: 050509fa558306399f2a987956514a8f849846ef Staging: comedi: Remove six_axis_t typedef :::::: TO: Bill Pemberton <wfp5p(a)virginia.edu&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)suse.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org