Hi Pavel, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on linus/master v5.16-rc6 next-20211220] [cannot apply to balbi-usb/testing/next peter-chen-usb/for-usb-next] [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] url: https://github.com/0day-ci/linux/commits/Pavel-Hofman/usb-gadget-audio-Mu... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: riscv-randconfig-r003-20211220 (https://download.01.org/0day-ci/archive/20211221/202112210422.0fC1uDBA-lk...) compiler: riscv32-linux-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://github.com/0day-ci/linux/commit/2b868f914e557058c0b5e749db604db56... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Pavel-Hofman/usb-gadget-audio-Multiple-rates-dyn-bInterval/20211220-162736 git checkout 2b868f914e557058c0b5e749db604db56b77e353 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/usb/gadget/legacy/ 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/usb/gadget/legacy/audio.c: In function 'audio_bind': 287 | for (i = 0; i < p_srates_cnt; ++i) | ^~~~~~~~~~~~ drivers/usb/gadget/legacy/audio.c:287:25: note: each undeclared identifier is reported only once for each function it appears in 288 | uac1_opts->p_srates[i] = p_srates[i]; | ^~~~~~~~ | p_srate 294 | for (i = 0; i < c_srates_cnt; ++i) | ^~~~~~~~~~~~ 295 | uac1_opts->c_srates[i] = c_srates[i]; | ^~~~~~~~ | c_srate vim +/p_srates_cnt +287 drivers/usb/gadget/legacy/audio.c 264 265 #ifndef CONFIG_GADGET_UAC1 266 uac2_opts = container_of(fi_uac2, struct f_uac2_opts, func_inst); 267 uac2_opts->p_chmask = p_chmask; 268 269 for (i = 0; i < p_srates_cnt; ++i) 270 uac2_opts->p_srates[i] = p_srates[i]; 271 uac2_opts->p_srate = p_srates[0]; 272 273 uac2_opts->p_ssize = p_ssize; 274 uac2_opts->c_chmask = c_chmask; 275 276 for (i = 0; i < c_srates_cnt; ++i) 277 uac2_opts->c_srates[i] = c_srates[i]; 278 uac2_opts->c_srate = c_srates[0]; 279 280 uac2_opts->c_ssize = c_ssize; 281 uac2_opts->req_number = UAC2_DEF_REQ_NUM; 282 #else 283 #ifndef CONFIG_GADGET_UAC1_LEGACY 284 uac1_opts = container_of(fi_uac1, struct f_uac1_opts, func_inst); 285 uac1_opts->p_chmask = p_chmask; 286 289 uac1_opts->p_srate = p_srates[0]; 290 291 uac1_opts->p_ssize = p_ssize; 292 uac1_opts->c_chmask = c_chmask; 293 296 uac1_opts->c_srate = c_srates[0]; 297 298 uac1_opts->c_ssize = c_ssize; 299 uac1_opts->req_number = UAC1_DEF_REQ_NUM; 300 #else /* CONFIG_GADGET_UAC1_LEGACY */ 301 uac1_opts = container_of(fi_uac1, struct f_uac1_legacy_opts, func_inst); 302 uac1_opts->fn_play = fn_play; 303 uac1_opts->fn_cap = fn_cap; 304 uac1_opts->fn_cntl = fn_cntl; 305 uac1_opts->req_buf_size = req_buf_size; 306 uac1_opts->req_count = req_count; 307 uac1_opts->audio_buf_size = audio_buf_size; 308 #endif /* CONFIG_GADGET_UAC1_LEGACY */ 309 #endif 310 311 status = usb_string_ids_tab(cdev, strings_dev); 312 if (status < 0) 313 goto fail; 314 device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; 315 device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; 316 317 if (gadget_is_otg(cdev->gadget) && !otg_desc[0]) { 318 struct usb_descriptor_header *usb_desc; 319 320 usb_desc = usb_otg_descriptor_alloc(cdev->gadget); 321 if (!usb_desc) { 322 status = -ENOMEM; 323 goto fail; 324 } 325 usb_otg_descriptor_init(cdev->gadget, usb_desc); 326 otg_desc[0] = usb_desc; 327 otg_desc[1] = NULL; 328 } 329 330 status = usb_add_config(cdev, &audio_config_driver, audio_do_config); 331 if (status < 0) 332 goto fail_otg_desc; 333 usb_composite_overwrite_options(cdev, &coverwrite); 334 335 INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); 336 return 0; 337 338 fail_otg_desc: 339 kfree(otg_desc[0]); 340 otg_desc[0] = NULL; 341 fail: 342 #ifndef CONFIG_GADGET_UAC1 343 usb_put_function_instance(fi_uac2); 344 #else 345 usb_put_function_instance(fi_uac1); 346 #endif 347 return status; 348 } 349 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org