Hi Neeraj, kernel test robot noticed the following build errors: [auto build test ERROR on bluetooth/master] [also build test ERROR on bluetooth-next/master linus/master v6.7-rc7 next-20231222] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Neeraj-Sanjay-Kale/Bluetooth-btnxpuart-Resolve-TX-timeout-error-in-power-save-stress-test/20231226-193718 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master patch link: https://lore.kernel.org/r/20231226113110.3923962-1-neeraj.sanjaykale%40nxp.com patch subject: [PATCH v2] Bluetooth: btnxpuart: Resolve TX timeout error in power save stress test config: arm-randconfig-003-20231227 (https://download.01.org/0day-ci/archive/20231227/202312271021.m0of6rmb-lkp@xxxxxxxxx/config) compiler: clang version 18.0.0git (https://github.com/llvm/llvm-project d3ef86708241a3bee902615c190dead1638c4e09) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231227/202312271021.m0of6rmb-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312271021.m0of6rmb-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/bluetooth/btnxpuart.c:356:4: error: call to undeclared function 'usleep'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 356 | usleep(2000); /* Allow chip to detect UART-break and enter sleep */ | ^ 1 error generated. vim +/usleep +356 drivers/bluetooth/btnxpuart.c 333 334 static void ps_control(struct hci_dev *hdev, u8 ps_state) 335 { 336 struct btnxpuart_dev *nxpdev = hci_get_drvdata(hdev); 337 struct ps_data *psdata = &nxpdev->psdata; 338 int status; 339 340 if (psdata->ps_state == ps_state || 341 !test_bit(BTNXPUART_SERDEV_OPEN, &nxpdev->tx_state)) 342 return; 343 344 mutex_lock(&psdata->ps_lock); 345 switch (psdata->cur_h2c_wakeupmode) { 346 case WAKEUP_METHOD_DTR: 347 if (ps_state == PS_STATE_AWAKE) 348 status = serdev_device_set_tiocm(nxpdev->serdev, TIOCM_DTR, 0); 349 else 350 status = serdev_device_set_tiocm(nxpdev->serdev, 0, TIOCM_DTR); 351 break; 352 case WAKEUP_METHOD_BREAK: 353 default: 354 if (ps_state == PS_STATE_AWAKE) { 355 status = serdev_device_break_ctl(nxpdev->serdev, 0); > 356 usleep(2000); /* Allow chip to detect UART-break and enter sleep */ 357 } else { 358 status = serdev_device_break_ctl(nxpdev->serdev, -1); 359 } 360 bt_dev_dbg(hdev, "Set UART break: %s, status=%d", 361 str_on_off(ps_state == PS_STATE_SLEEP), status); 362 break; 363 } 364 if (!status) 365 psdata->ps_state = ps_state; 366 mutex_unlock(&psdata->ps_lock); 367 368 if (ps_state == PS_STATE_AWAKE) 369 btnxpuart_tx_wakeup(nxpdev); 370 } 371 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
