tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y head: b82e5721a17325739adef83a029340a63b53d4ad commit: ce7b62d857919e511c6d5171c578c4b7e1bf0e67 [6424/6532] usb: dwc2: Fix hibernation between host and device modes. config: x86_64-randconfig-a016-20210514 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project e475d4d69f04597c3f6c34c8ff1899bf44502a94) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.gi... git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-5.4.y git checkout ce7b62d857919e511c6d5171c578c4b7e1bf0e67 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): hsotg->bus_suspended = 0; ~~~~~ ^ 1 error generated. vim +715 drivers/usb/dwc2/core_intr.c 667 668 /** 669 * dwc_handle_gpwrdn_disc_det() - Handles the gpwrdn disconnect detect. 670 * Exits hibernation without restoring registers. 671 * 672 * @hsotg: Programming view of DWC_otg controller 673 * @gpwrdn: GPWRDN register 674 */ 675 static inline void dwc_handle_gpwrdn_disc_det(struct dwc2_hsotg *hsotg, 676 u32 gpwrdn) 677 { 678 u32 gpwrdn_tmp; 679 680 /* Switch-on voltage to the core */ 681 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 682 gpwrdn_tmp &= ~GPWRDN_PWRDNSWTCH; 683 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 684 udelay(5); 685 686 /* Reset core */ 687 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 688 gpwrdn_tmp &= ~GPWRDN_PWRDNRSTN; 689 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 690 udelay(5); 691 692 /* Disable Power Down Clamp */ 693 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 694 gpwrdn_tmp &= ~GPWRDN_PWRDNCLMP; 695 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 696 udelay(5); 697 698 /* Deassert reset core */ 699 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 700 gpwrdn_tmp |= GPWRDN_PWRDNRSTN; 701 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 702 udelay(5); 703 704 /* Disable PMU interrupt */ 705 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 706 gpwrdn_tmp &= ~GPWRDN_PMUINTSEL; 707 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 708 709 /* De-assert Wakeup Logic */ 710 gpwrdn_tmp = dwc2_readl(hsotg, GPWRDN); 711 gpwrdn_tmp &= ~GPWRDN_PMUACTV; 712 dwc2_writel(hsotg, gpwrdn_tmp, GPWRDN); 713 714 hsotg->hibernated = 0; 716 717 if (gpwrdn & GPWRDN_IDSTS) { 718 hsotg->op_state = OTG_STATE_B_PERIPHERAL; 719 dwc2_core_init(hsotg, false); 720 dwc2_enable_global_interrupts(hsotg); 721 dwc2_hsotg_core_init_disconnected(hsotg, false); 722 dwc2_hsotg_core_connect(hsotg); 723 } else { 724 hsotg->op_state = OTG_STATE_A_HOST; 725 726 /* Initialize the Core for Host mode */ 727 dwc2_core_init(hsotg, false); 728 dwc2_enable_global_interrupts(hsotg); 729 dwc2_hcd_start(hsotg); 730 } 731 } 732 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org