tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next head: 9b7843d1e125dca0d6ed0af9e8dd709d41eb25ad commit: 9b7843d1e125dca0d6ed0af9e8dd709d41eb25ad [92/92] ALSA: sc6000: Assign vport directly on card's private_data config: x86_64-randconfig-s021-20210718 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?i... git remote add sound https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git git fetch --no-tags sound for-next git checkout 9b7843d1e125dca0d6ed0af9e8dd709d41eb25ad # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) sound/isa/sc6000.c:534:35: sparse: expected char [noderef] __iomem *vport sound/isa/sc6000.c:534:35: sparse: got void *private_data sound/isa/sc6000.c:585:28: sparse: expected void *private_data sound/isa/sc6000.c:585:28: sparse: got char [noderef] __iomem *[assigned] vport vim +534 sound/isa/sc6000.c 531 532 static void snd_sc6000_free(struct snd_card *card) 533 { 535 536 if (vport) 537 sc6000_setup_board(vport, 0); 538 } 539 540 static int snd_sc6000_probe(struct device *devptr, unsigned int dev) 541 { 542 static const int possible_irqs[] = { 5, 7, 9, 10, 11, -1 }; 543 static const int possible_dmas[] = { 1, 3, 0, -1 }; 544 int err; 545 int xirq = irq[dev]; 546 int xdma = dma[dev]; 547 struct snd_card *card; 548 struct snd_wss *chip; 549 struct snd_opl3 *opl3; 550 char __iomem *vport; 551 char __iomem *vmss_port; 552 553 err = snd_devm_card_new(devptr, index[dev], id[dev], THIS_MODULE, 554 0, &card); 555 if (err < 0) 556 return err; 557 558 if (xirq == SNDRV_AUTO_IRQ) { 559 xirq = snd_legacy_find_free_irq(possible_irqs); 560 if (xirq < 0) { 561 snd_printk(KERN_ERR PFX "unable to find a free IRQ\n"); 562 return -EBUSY; 563 } 564 } 565 566 if (xdma == SNDRV_AUTO_DMA) { 567 xdma = snd_legacy_find_free_dma(possible_dmas); 568 if (xdma < 0) { 569 snd_printk(KERN_ERR PFX "unable to find a free DMA\n"); 570 return -EBUSY; 571 } 572 } 573 574 if (!devm_request_region(devptr, port[dev], 0x10, DRV_NAME)) { 575 snd_printk(KERN_ERR PFX 576 "I/O port region is already in use.\n"); 577 return -EBUSY; 578 } 579 vport = devm_ioport_map(devptr, port[dev], 0x10); 580 if (!vport) { 581 snd_printk(KERN_ERR PFX 582 "I/O port cannot be iomapped.\n"); 583 return -EBUSY; 584 } 586 587 /* to make it marked as used */ 588 if (!devm_request_region(devptr, mss_port[dev], 4, DRV_NAME)) { 589 snd_printk(KERN_ERR PFX 590 "SC-6000 port I/O port region is already in use.\n"); 591 return -EBUSY; 592 } 593 vmss_port = devm_ioport_map(devptr, mss_port[dev], 4); 594 if (!vmss_port) { 595 snd_printk(KERN_ERR PFX 596 "MSS port I/O cannot be iomapped.\n"); 597 return -EBUSY; 598 } 599 600 snd_printd("Initializing BASE[0x%lx] IRQ[%d] DMA[%d] MIRQ[%d]\n", 601 port[dev], xirq, xdma, 602 mpu_irq[dev] == SNDRV_AUTO_IRQ ? 0 : mpu_irq[dev]); 603 604 err = sc6000_init_board(vport, vmss_port, dev); 605 if (err < 0) 606 return err; 607 card->private_free = snd_sc6000_free; 608 609 err = snd_wss_create(card, mss_port[dev] + 4, -1, xirq, xdma, -1, 610 WSS_HW_DETECT, 0, &chip); 611 if (err < 0) 612 return err; 613 614 err = snd_wss_pcm(chip, 0); 615 if (err < 0) { 616 snd_printk(KERN_ERR PFX 617 "error creating new WSS PCM device\n"); 618 return err; 619 } 620 err = snd_wss_mixer(chip); 621 if (err < 0) { 622 snd_printk(KERN_ERR PFX "error creating new WSS mixer\n"); 623 return err; 624 } 625 err = snd_sc6000_mixer(chip); 626 if (err < 0) { 627 snd_printk(KERN_ERR PFX "the mixer rewrite failed\n"); 628 return err; 629 } 630 if (snd_opl3_create(card, 631 0x388, 0x388 + 2, 632 OPL3_HW_AUTO, 0, &opl3) < 0) { 633 snd_printk(KERN_ERR PFX "no OPL device at 0x%x-0x%x ?\n", 634 0x388, 0x388 + 2); 635 } else { 636 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL); 637 if (err < 0) 638 return err; 639 } 640 641 if (mpu_port[dev] != SNDRV_AUTO_PORT) { 642 if (mpu_irq[dev] == SNDRV_AUTO_IRQ) 643 mpu_irq[dev] = -1; 644 if (snd_mpu401_uart_new(card, 0, 645 MPU401_HW_MPU401, 646 mpu_port[dev], 0, 647 mpu_irq[dev], NULL) < 0) 648 snd_printk(KERN_ERR "no MPU-401 device at 0x%lx ?\n", 649 mpu_port[dev]); 650 } 651 652 strcpy(card->driver, DRV_NAME); 653 strcpy(card->shortname, "SC-6000"); 654 sprintf(card->longname, "Gallant SC-6000 at 0x%lx, irq %d, dma %d", 655 mss_port[dev], xirq, xdma); 656 657 err = snd_card_register(card); 658 if (err < 0) 659 return err; 660 661 dev_set_drvdata(devptr, card); 662 return 0; 663 } 664 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org