tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6b75d88fa81b122cce37ebf17428a849ccd3d0f1 commit: 8e3e59c31fea5de95ffc52c46f0c562c39f20c59 mwifiex: Try waking the firmware until we get an interrupt date: 3 weeks ago config: arc-buildonly-randconfig-r005-20211108 (attached as .config) compiler: arc-elf-gcc (GCC) 11.2.0 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8e3e59c31fea5de95ffc52c46f0c562c39f20c59 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc 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 >>): drivers/net/wireless/marvell/mwifiex/pcie.c: In function 'mwifiex_pm_wakeup_card': 659 | int retval; | ^~~~~~ cc1: all warnings being treated as errors vim +/retval +659 drivers/net/wireless/marvell/mwifiex/pcie.c 653 654 /* This function wakes up the card by reading fw_status register. */ 655 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 656 { 657 struct pcie_service_card *card = adapter->card; 658 const struct mwifiex_pcie_card_reg *reg = card->pcie.reg; 660 661 mwifiex_dbg(adapter, EVENT, 662 "event: Wakeup device...\n"); 663 664 if (reg->sleep_cookie) 665 mwifiex_pcie_dev_wakeup_delay(adapter); 666 667 /* The 88W8897 PCIe+USB firmware (latest version 15.68.19.p21) sometimes 668 * appears to ignore or miss our wakeup request, so we continue trying 669 * until we receive an interrupt from the card. 670 */ 671 if (read_poll_timeout(mwifiex_write_reg, retval, 672 READ_ONCE(adapter->int_status) != 0, 673 500, 500 * N_WAKEUP_TRIES_SHORT_INTERVAL, 674 false, 675 adapter, reg->fw_status, FIRMWARE_READY_PCIE)) { 676 if (read_poll_timeout(mwifiex_write_reg, retval, 677 READ_ONCE(adapter->int_status) != 0, 678 10000, 10000 * N_WAKEUP_TRIES_LONG_INTERVAL, 679 false, 680 adapter, reg->fw_status, FIRMWARE_READY_PCIE)) { 681 mwifiex_dbg(adapter, ERROR, 682 "Firmware didn't wake up\n"); 683 return -EIO; 684 } 685 } 686 687 if (reg->sleep_cookie) { 688 mwifiex_pcie_dev_wakeup_delay(adapter); 689 mwifiex_dbg(adapter, INFO, 690 "PCIE wakeup: Setting PS_STATE_AWAKE\n"); 691 adapter->ps_state = PS_STATE_AWAKE; 692 } 693 694 return 0; 695 } 696 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org