tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: 87241c08286384feb3ddc57d4cb0daca4be1e384 commit: 09c6f0fc5c85332b93c06fce6a05ae7af0795a89 [8692/9195] xlink-usb: XLink USB Remote and Local Host driver config: nios2-randconfig-r026-20200811 (attached as .config) compiler: nios2-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 git checkout 09c6f0fc5c85332b93c06fce6a05ae7af0795a89 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 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/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'usb_get_device_status_by_id': 615 | u32 num = 0; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: At top level: 631 | int usb_interrupt(struct usb_device *usb_dev, unsigned int pipe, | ^~~~~~~~~~~~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'usb_interrupt': 635 | struct usb_host_endpoint *ep; | ^~ 634 | struct urb *urb; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'usb_device_reset': drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:662:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 662 | struct usb_interface *data_interface = acm->data; | ^~~~~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:658:28: warning: variable 'ep' set but not used [-Wunused-but-set-variable] 658 | struct usb_host_endpoint *ep; | ^~ 653 | int ret; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'vpu_write_host': drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:749:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 749 | int val = ACM_CTRL_DTR | ACM_CTRL_RTS; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:754:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 754 | int count = len; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'vpu_write_reset_host': drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:848:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 848 | const char *buf = 0; | ^~~~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: At top level: 884 | void vpu_write_swid(struct acm *acm, int *buf, int len) | ^~~~~~~~~~~~~~ 1013 | void vpu_close_swid(struct acm *acm, int len) | ^~~~~~~~~~~~~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'vpu_read_host': drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:1066:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 1066 | struct urb *urb; | ^~~~~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:1096:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 1096 | int val = ACM_CTRL_DTR | ACM_CTRL_RTS; | ^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'vpu_acm_probe': drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:1365:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 1365 | struct usb_device *udev = interface_to_usbdev(intf); | ^~~~~~ 1532 | vpu_write_swid(acm, devnum, size); | ^~~~~~ | | | int drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:884:43: note: expected 'int *' but argument is of type 'int' 884 | void vpu_write_swid(struct acm *acm, int *buf, int len) | ~~~~~^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:1534:22: warning: passing argument 2 of 'vpu_write_swid' makes pointer from integer without a cast [-Wint-conversion] 1534 | vpu_write_swid(acm, busnum, size); | ^~~~~~ | | | int drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:884:43: note: expected 'int *' but argument is of type 'int' 884 | void vpu_write_swid(struct acm *acm, int *buf, int len) | ~~~~~^~~ drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c: In function 'vpu_acm_init': 1727 | int retval; | ^~~~~~ At top level: drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c:595:20: warning: 'usb_get_device_by_name' defined but not used [-Wunused-function] 595 | static struct acm *usb_get_device_by_name(const char *name) | ^~~~~~~~~~~~~~~~~~~~~~ -- drivers/misc/xlink-usb/remote_host/mxlk_interface_host.c: In function 'xlink_usb_write': 40 | return vpu_close_host(sw_device_id, size); | ^~~~ | | | size_t * const {aka unsigned int * const} In file included from drivers/misc/xlink-usb/remote_host/mxlk_interface_host.c:22: drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.h:59:32: note: expected 'int' but argument is of type 'size_t * const' {aka 'unsigned int * const'} 59 | int vpu_close_host(u32 id, int len); | ~~~~^~~ vim +615 drivers/misc/xlink-usb/remote_host/vpu-cdc-acm.c 608 609 int usb_get_device_status_by_id(u32 id, uint32_t *status) 610 { 611 struct acm *xdev = usb_get_device_by_id(id); 612 613 if (!xdev) 614 return -ENODEV; 616 617 mutex_lock(&dev_list_mutex); 618 list_for_each_entry(xdev, &dev_list, list) { 619 *status++ = xdev->status; 620 num++; 621 } 622 mutex_unlock(&dev_list_mutex); 623 return 0; 624 } 625 626 struct api_context { 627 struct completion done; 628 int status; 629 }; 630 632 void *data, int len, int *actual_length, int timeout) 633 { 636 637 ep = usb_pipe_endpoint(usb_dev, pipe); 638 urb = usb_alloc_urb(0, GFP_KERNEL); 639 return 0; 640 } 641 642 int usb_connect_device(uint32_t sw_device_id) 643 { 644 struct acm *xdev = usb_get_device_by_id(sw_device_id); 645 646 if (!xdev) 647 return -ENODEV; 648 return 0; 649 } 650 651 int usb_device_reset(u8 cmd) 652 { 654 int index = 0; 655 unsigned int pipe = 1; 656 struct acm *acm = vpu_acm_get_by_minor(index); 657 int actual_len; 658 struct usb_host_endpoint *ep; 659 u8 *buffer_cmd = NULL; 660 661 ep = usb_pipe_endpoint(acm->dev, pipe); 663 struct usb_endpoint_descriptor *epwrite = NULL; 664 665 epwrite = &data_interface->cur_altsetting->endpoint[1].desc; 666 buffer_cmd = kzalloc(sizeof(cmd), GFP_KERNEL); 667 if (!buffer_cmd) 668 return -ENOMEM; 669 670 *buffer_cmd = cmd; 671 672 pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30); 673 674 ret = usb_interrupt(acm->dev, 675 usb_sndintpipe(acm->dev, epwrite->bEndpointAddress), 676 buffer_cmd, sizeof(cmd), 677 &actual_len, USB_CTRL_SET_TIMEOUT); 678 kfree(buffer_cmd); 679 680 return 0; 681 } 682 EXPORT_SYMBOL_GPL(usb_device_reset); 683 684 int vpu_write_host(u32 id, const char *buf, size_t *size, 685 unsigned int timeout_ms) 686 { 687 int len = *size; 688 int ret = 0; 689 struct acm *xdev = usb_get_device_by_id(id); 690 struct acm *acm; 691 int index = 0; 692 long jiffies_passed = 0; 693 long jiffies_timeout = (long)msecs_to_jiffies(timeout_ms); 694 int retval = -ENODEV; 695 int i; 696 697 if (!xdev) 698 return -EINVAL; 699 700 acm = vpu_acm_get_by_minor(index); 701 if (!acm) 702 return -EINVAL; 703 704 ret = wait_event_interruptible_timeout(acm->wioctl, 705 acm, jiffies_timeout - jiffies_passed); 706 if (ret == 0) 707 return -ETIME; 708 709 *size = 0; 710 if (len == 0) 711 return -EINVAL; 712 713 mutex_lock(&acm->mutex); 714 if (acm->disconnected) 715 goto disconnected; 716 717 retval = usb_autopm_get_interface(acm->control); 718 if (retval) 719 goto error_get_interface; 720 /* 721 * FIXME: Why do we need this? Allocating 64K of physically contiguous 722 * memory is really nasty... 723 */ 724 acm->control->needs_remote_wakeup = 1; 725 726 acm->ctrlurb->dev = acm->dev; 727 retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); 728 if (retval) { 729 dev_err(&acm->control->dev, 730 "%s - usb_submit_urb(ctrl irq) failed\n", __func__); 731 goto error_submit_urb; 732 } 733 734 /* 735 * Unthrottle device in case the TTY was closed while throttled. 736 */ 737 clear_bit(ACM_THROTTLED, &acm->flags); 738 739 retval = vpu_acm_submit_read_urbs(acm, GFP_KERNEL); 740 if (retval) 741 goto error_submit_read_urbs; 742 743 usb_autopm_put_interface(acm->control); 744 745 mutex_unlock(&acm->mutex); 746 747 vpu_acm_submit_read_urbs(acm, GFP_KERNEL); 748 749 int val = ACM_CTRL_DTR | ACM_CTRL_RTS; 750 751 acm->ctrlout = val; 752 vpu_acm_set_control(acm, val); 753 755 int stat; 756 unsigned long flags; 757 int wbn; 758 struct acm_wb *wb; 759 760 if (!count) 761 return -EINVAL; 762 763 dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); 764 765 spin_lock_irqsave(&acm->write_lock, flags); 766 wbn = vpu_acm_wb_alloc(acm); 767 if (wbn < 0) { 768 spin_unlock_irqrestore(&acm->write_lock, flags); 769 return -EINVAL; 770 } 771 wb = &acm->wb[wbn]; 772 773 if (!acm->dev) { 774 wb->use = 0; 775 spin_unlock_irqrestore(&acm->write_lock, flags); 776 return -EINVAL; 777 } 778 779 count = (count > acm->writesize) ? acm->writesize : count; 780 dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); 781 memcpy(wb->buf, buf, count); 782 wb->len = count; 783 len = count; 784 stat = usb_autopm_get_interface_async(acm->control); 785 if (stat) { 786 wb->use = 0; 787 spin_unlock_irqrestore(&acm->write_lock, flags); 788 return -EINVAL; 789 } 790 791 if (acm->susp_count) { 792 usb_anchor_urb(wb->urb, &acm->delayed); 793 spin_unlock_irqrestore(&acm->write_lock, flags); 794 return -EINVAL; 795 } 796 stat = vpu_acm_start_wb(acm, wb); 797 spin_unlock_irqrestore(&acm->write_lock, flags); 798 799 if (stat < 0) 800 return -EINVAL; 801 802 error_submit_read_urbs: 803 for (i = 0; i < acm->rx_buflimit; i++) 804 usb_kill_urb(acm->read_urbs[i]); 805 usb_kill_urb(acm->ctrlurb); 806 error_submit_urb: 807 usb_autopm_put_interface(acm->control); 808 error_get_interface: 809 disconnected: 810 mutex_unlock(&acm->mutex); 811 *size = len; 812 return 0; 813 } 814 EXPORT_SYMBOL_GPL(vpu_write_host); 815 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org