Hi Ye, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on usb/usb-next usb/usb-linus brgl/gpio/for-next wsa/i2c/for-next broonie-spi/for-next linus/master v6.3-rc3 next-20230323] [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/Ye-Xiang/usb-Add-support-for-Intel-LJCA-device/20230324-012303 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing patch link: https://lore.kernel.org/r/20230323172113.1231050-2-xiang.ye%40intel.com patch subject: [PATCH v6 1/6] usb: Add support for Intel LJCA device config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20230324/202303240545.fhNNvhZt-lkp@xxxxxxxxx/config) compiler: riscv64-linux-gcc (GCC) 12.1.0 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://github.com/intel-lab-lkp/linux/commit/606c371c73fa37d233b47bd34d4789a1a157a9e4 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ye-Xiang/usb-Add-support-for-Intel-LJCA-device/20230324-012303 git checkout 606c371c73fa37d233b47bd34d4789a1a157a9e4 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/usb/misc/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303240545.fhNNvhZt-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): drivers/usb/misc/ljca.c:133:9: error: unknown type name 'ljca_event_cb_t' 133 | ljca_event_cb_t notify; | ^~~~~~~~~~~~~~~ drivers/usb/misc/ljca.c: In function 'ljca_stub_notify': drivers/usb/misc/ljca.c:252:17: error: called object is not a function or function pointer 252 | stub->event_entry.notify(stub->event_entry.context, cmd, evt_data, len); | ^~~~ drivers/usb/misc/ljca.c: In function 'ljca_add_aux_dev': >> drivers/usb/misc/ljca.c:498:16: error: implicit declaration of function 'acpi_find_child_device'; did you mean 'acpi_match_device'? [-Werror=implicit-function-declaration] 498 | adev = acpi_find_child_device(parent, adr, false); | ^~~~~~~~~~~~~~~~~~~~~~ | acpi_match_device >> drivers/usb/misc/ljca.c:498:14: warning: assignment to 'struct acpi_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 498 | adev = acpi_find_child_device(parent, adr, false); | ^ >> drivers/usb/misc/ljca.c:479:29: warning: variable 'adev' set but not used [-Wunused-but-set-variable] 479 | struct acpi_device *adev = NULL; | ^~~~ drivers/usb/misc/ljca.c: At top level: drivers/usb/misc/ljca.c:369:12: warning: 'ljca_transfer_internal' defined but not used [-Wunused-function] 369 | static int ljca_transfer_internal(struct ljca *ljca, u8 cmd, const void *obuf, | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +498 drivers/usb/misc/ljca.c 473 474 static int ljca_add_aux_dev(struct ljca_dev *dev, char *name, unsigned int id, unsigned int adr, 475 void *data) 476 { 477 struct auxiliary_device *auxdev; 478 struct acpi_device *parent; > 479 struct acpi_device *adev = NULL; 480 int ret; 481 482 if (dev->auxdev_count >= ARRAY_SIZE(dev->auxdevs)) 483 return -EINVAL; 484 485 auxdev = &dev->auxdevs[dev->auxdev_count]; 486 auxdev->name = name; 487 auxdev->id = id; 488 auxdev->dev.platform_data = data; 489 auxdev->dev.parent = &dev->intf->dev; 490 auxdev->dev.release = ljca_aux_release; 491 492 ret = auxiliary_device_init(auxdev); 493 if (ret) 494 return ret; 495 496 /* new auxiliary device bind to acpi device */ 497 parent = ACPI_COMPANION(&dev->intf->dev); > 498 adev = acpi_find_child_device(parent, adr, false); 499 ACPI_COMPANION_SET(&auxdev->dev, adev ?: parent); 500 501 ret = auxiliary_device_add(auxdev); 502 if (ret) { 503 dev_err(&dev->intf->dev, "failed to add auxiliary dev %s.%d\n", name, id); 504 auxiliary_device_uninit(auxdev); 505 return ret; 506 } 507 508 dev->auxdev_count++; 509 510 return 0; 511 } 512 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests