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Sun, 05 Nov 2023 03:17:04 +0000 Date: Sun, 5 Nov 2023 11:16:02 +0800 From: kernel test robot To: Arnd Bergmann Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Mark Brown Subject: sound/ac97/bus.c:192: warning: Function parameter or member 'drv' not described in 'snd_ac97_codec_driver_register' Message-ID: <202311051152.W491nQsq-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: aea6bf908d730b01bd264a8821159db9463c111c commit: 5eab9265759e2fb042aa452931c3d06ab7ab8dae ASoC: PXA: make SND_PXA2XX_SOC_AC97 user-selectable date: 10 months ago config: x86_64-buildonly-randconfig-003-20231102 (https://download.01.org/0day-ci/archive/20231105/202311051152.W491nQsq-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231105/202311051152.W491nQsq-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202311051152.W491nQsq-lkp@intel.com/ All warnings (new ones prefixed by >>): >> sound/ac97/bus.c:192: warning: Function parameter or member 'drv' not described in 'snd_ac97_codec_driver_register' >> sound/ac97/bus.c:192: warning: Excess function parameter 'dev' description in 'snd_ac97_codec_driver_register' >> sound/ac97/bus.c:205: warning: Function parameter or member 'drv' not described in 'snd_ac97_codec_driver_unregister' >> sound/ac97/bus.c:205: warning: Excess function parameter 'dev' description in 'snd_ac97_codec_driver_unregister' >> sound/ac97/bus.c:351: warning: Function parameter or member 'codecs_pdata' not described in 'snd_ac97_controller_register' vim +192 sound/ac97/bus.c 74426fbff66eea Robert Jarzmik 2017-09-02 181 74426fbff66eea Robert Jarzmik 2017-09-02 182 /** 74426fbff66eea Robert Jarzmik 2017-09-02 183 * snd_ac97_codec_driver_register - register an AC97 codec driver 74426fbff66eea Robert Jarzmik 2017-09-02 184 * @dev: AC97 driver codec to register 74426fbff66eea Robert Jarzmik 2017-09-02 185 * 74426fbff66eea Robert Jarzmik 2017-09-02 186 * Register an AC97 codec driver to the ac97 bus driver, aka. the AC97 digital 74426fbff66eea Robert Jarzmik 2017-09-02 187 * controller. 74426fbff66eea Robert Jarzmik 2017-09-02 188 * 74426fbff66eea Robert Jarzmik 2017-09-02 189 * Returns 0 on success or error code 74426fbff66eea Robert Jarzmik 2017-09-02 190 */ 74426fbff66eea Robert Jarzmik 2017-09-02 191 int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv) 74426fbff66eea Robert Jarzmik 2017-09-02 @192 { 74426fbff66eea Robert Jarzmik 2017-09-02 193 drv->driver.bus = &ac97_bus_type; 74426fbff66eea Robert Jarzmik 2017-09-02 194 return driver_register(&drv->driver); 74426fbff66eea Robert Jarzmik 2017-09-02 195 } 74426fbff66eea Robert Jarzmik 2017-09-02 196 EXPORT_SYMBOL_GPL(snd_ac97_codec_driver_register); 74426fbff66eea Robert Jarzmik 2017-09-02 197 74426fbff66eea Robert Jarzmik 2017-09-02 198 /** 74426fbff66eea Robert Jarzmik 2017-09-02 199 * snd_ac97_codec_driver_unregister - unregister an AC97 codec driver 74426fbff66eea Robert Jarzmik 2017-09-02 200 * @dev: AC97 codec driver to unregister 74426fbff66eea Robert Jarzmik 2017-09-02 201 * 74426fbff66eea Robert Jarzmik 2017-09-02 202 * Unregister a previously registered ac97 codec driver. 74426fbff66eea Robert Jarzmik 2017-09-02 203 */ 74426fbff66eea Robert Jarzmik 2017-09-02 204 void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv) 74426fbff66eea Robert Jarzmik 2017-09-02 @205 { 74426fbff66eea Robert Jarzmik 2017-09-02 206 driver_unregister(&drv->driver); 74426fbff66eea Robert Jarzmik 2017-09-02 207 } 74426fbff66eea Robert Jarzmik 2017-09-02 208 EXPORT_SYMBOL_GPL(snd_ac97_codec_driver_unregister); 74426fbff66eea Robert Jarzmik 2017-09-02 209 74426fbff66eea Robert Jarzmik 2017-09-02 210 /** 74426fbff66eea Robert Jarzmik 2017-09-02 211 * snd_ac97_codec_get_platdata - get platform_data 74426fbff66eea Robert Jarzmik 2017-09-02 212 * @adev: the ac97 codec device 74426fbff66eea Robert Jarzmik 2017-09-02 213 * 74426fbff66eea Robert Jarzmik 2017-09-02 214 * For legacy platforms, in order to have platform_data in codec drivers 74426fbff66eea Robert Jarzmik 2017-09-02 215 * available, while ac97 device are auto-created upon probe, this retrieves the 74426fbff66eea Robert Jarzmik 2017-09-02 216 * platdata which was setup on ac97 controller registration. 74426fbff66eea Robert Jarzmik 2017-09-02 217 * 74426fbff66eea Robert Jarzmik 2017-09-02 218 * Returns the platform data pointer 74426fbff66eea Robert Jarzmik 2017-09-02 219 */ 74426fbff66eea Robert Jarzmik 2017-09-02 220 void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev) 74426fbff66eea Robert Jarzmik 2017-09-02 221 { 74426fbff66eea Robert Jarzmik 2017-09-02 222 struct ac97_controller *ac97_ctrl = adev->ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 223 74426fbff66eea Robert Jarzmik 2017-09-02 224 return ac97_ctrl->codecs_pdata[adev->num]; 74426fbff66eea Robert Jarzmik 2017-09-02 225 } 74426fbff66eea Robert Jarzmik 2017-09-02 226 EXPORT_SYMBOL_GPL(snd_ac97_codec_get_platdata); 74426fbff66eea Robert Jarzmik 2017-09-02 227 74426fbff66eea Robert Jarzmik 2017-09-02 228 static void ac97_ctrl_codecs_unregister(struct ac97_controller *ac97_ctrl) 74426fbff66eea Robert Jarzmik 2017-09-02 229 { 74426fbff66eea Robert Jarzmik 2017-09-02 230 int i; 74426fbff66eea Robert Jarzmik 2017-09-02 231 74426fbff66eea Robert Jarzmik 2017-09-02 232 for (i = 0; i < AC97_BUS_MAX_CODECS; i++) 74426fbff66eea Robert Jarzmik 2017-09-02 233 if (ac97_ctrl->codecs[i]) { 74426fbff66eea Robert Jarzmik 2017-09-02 234 ac97_ctrl->codecs[i]->ac97_ctrl = &ac97_unbound_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 235 device_unregister(&ac97_ctrl->codecs[i]->dev); 74426fbff66eea Robert Jarzmik 2017-09-02 236 } 74426fbff66eea Robert Jarzmik 2017-09-02 237 } 74426fbff66eea Robert Jarzmik 2017-09-02 238 74426fbff66eea Robert Jarzmik 2017-09-02 239 static ssize_t cold_reset_store(struct device *dev, 74426fbff66eea Robert Jarzmik 2017-09-02 240 struct device_attribute *attr, const char *buf, 74426fbff66eea Robert Jarzmik 2017-09-02 241 size_t len) 74426fbff66eea Robert Jarzmik 2017-09-02 242 { 74426fbff66eea Robert Jarzmik 2017-09-02 243 struct ac97_controller *ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 244 74426fbff66eea Robert Jarzmik 2017-09-02 245 mutex_lock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 246 ac97_ctrl = to_ac97_controller(dev); 74426fbff66eea Robert Jarzmik 2017-09-02 247 ac97_ctrl->ops->reset(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 248 mutex_unlock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 249 return len; 74426fbff66eea Robert Jarzmik 2017-09-02 250 } 74426fbff66eea Robert Jarzmik 2017-09-02 251 static DEVICE_ATTR_WO(cold_reset); 74426fbff66eea Robert Jarzmik 2017-09-02 252 74426fbff66eea Robert Jarzmik 2017-09-02 253 static ssize_t warm_reset_store(struct device *dev, 74426fbff66eea Robert Jarzmik 2017-09-02 254 struct device_attribute *attr, const char *buf, 74426fbff66eea Robert Jarzmik 2017-09-02 255 size_t len) 74426fbff66eea Robert Jarzmik 2017-09-02 256 { 74426fbff66eea Robert Jarzmik 2017-09-02 257 struct ac97_controller *ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 258 74426fbff66eea Robert Jarzmik 2017-09-02 259 if (!dev) 74426fbff66eea Robert Jarzmik 2017-09-02 260 return -ENODEV; 74426fbff66eea Robert Jarzmik 2017-09-02 261 74426fbff66eea Robert Jarzmik 2017-09-02 262 mutex_lock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 263 ac97_ctrl = to_ac97_controller(dev); 74426fbff66eea Robert Jarzmik 2017-09-02 264 ac97_ctrl->ops->warm_reset(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 265 mutex_unlock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 266 return len; 74426fbff66eea Robert Jarzmik 2017-09-02 267 } 74426fbff66eea Robert Jarzmik 2017-09-02 268 static DEVICE_ATTR_WO(warm_reset); 74426fbff66eea Robert Jarzmik 2017-09-02 269 74426fbff66eea Robert Jarzmik 2017-09-02 270 static struct attribute *ac97_controller_device_attrs[] = { 74426fbff66eea Robert Jarzmik 2017-09-02 271 &dev_attr_cold_reset.attr, 74426fbff66eea Robert Jarzmik 2017-09-02 272 &dev_attr_warm_reset.attr, 74426fbff66eea Robert Jarzmik 2017-09-02 273 NULL 74426fbff66eea Robert Jarzmik 2017-09-02 274 }; 74426fbff66eea Robert Jarzmik 2017-09-02 275 fa2e5a647ed2ed Rikard Falkeborn 2021-01-31 276 static const struct attribute_group ac97_adapter_attr_group = { 74426fbff66eea Robert Jarzmik 2017-09-02 277 .name = "ac97_operations", 74426fbff66eea Robert Jarzmik 2017-09-02 278 .attrs = ac97_controller_device_attrs, 74426fbff66eea Robert Jarzmik 2017-09-02 279 }; 74426fbff66eea Robert Jarzmik 2017-09-02 280 74426fbff66eea Robert Jarzmik 2017-09-02 281 static const struct attribute_group *ac97_adapter_groups[] = { 74426fbff66eea Robert Jarzmik 2017-09-02 282 &ac97_adapter_attr_group, 74426fbff66eea Robert Jarzmik 2017-09-02 283 NULL, 74426fbff66eea Robert Jarzmik 2017-09-02 284 }; 74426fbff66eea Robert Jarzmik 2017-09-02 285 74426fbff66eea Robert Jarzmik 2017-09-02 286 static void ac97_del_adapter(struct ac97_controller *ac97_ctrl) 74426fbff66eea Robert Jarzmik 2017-09-02 287 { 74426fbff66eea Robert Jarzmik 2017-09-02 288 mutex_lock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 289 ac97_ctrl_codecs_unregister(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 290 list_del(&ac97_ctrl->controllers); 74426fbff66eea Robert Jarzmik 2017-09-02 291 mutex_unlock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 292 74426fbff66eea Robert Jarzmik 2017-09-02 293 device_unregister(&ac97_ctrl->adap); 74426fbff66eea Robert Jarzmik 2017-09-02 294 } 74426fbff66eea Robert Jarzmik 2017-09-02 295 74426fbff66eea Robert Jarzmik 2017-09-02 296 static void ac97_adapter_release(struct device *dev) 74426fbff66eea Robert Jarzmik 2017-09-02 297 { 74426fbff66eea Robert Jarzmik 2017-09-02 298 struct ac97_controller *ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 299 74426fbff66eea Robert Jarzmik 2017-09-02 300 ac97_ctrl = to_ac97_controller(dev); 74426fbff66eea Robert Jarzmik 2017-09-02 301 idr_remove(&ac97_adapter_idr, ac97_ctrl->nr); 74426fbff66eea Robert Jarzmik 2017-09-02 302 dev_dbg(&ac97_ctrl->adap, "adapter unregistered by %s\n", 74426fbff66eea Robert Jarzmik 2017-09-02 303 dev_name(ac97_ctrl->parent)); 74426fbff66eea Robert Jarzmik 2017-09-02 304 } 74426fbff66eea Robert Jarzmik 2017-09-02 305 74426fbff66eea Robert Jarzmik 2017-09-02 306 static const struct device_type ac97_adapter_type = { 74426fbff66eea Robert Jarzmik 2017-09-02 307 .groups = ac97_adapter_groups, 74426fbff66eea Robert Jarzmik 2017-09-02 308 .release = ac97_adapter_release, 74426fbff66eea Robert Jarzmik 2017-09-02 309 }; 74426fbff66eea Robert Jarzmik 2017-09-02 310 74426fbff66eea Robert Jarzmik 2017-09-02 311 static int ac97_add_adapter(struct ac97_controller *ac97_ctrl) 74426fbff66eea Robert Jarzmik 2017-09-02 312 { 74426fbff66eea Robert Jarzmik 2017-09-02 313 int ret; 74426fbff66eea Robert Jarzmik 2017-09-02 314 74426fbff66eea Robert Jarzmik 2017-09-02 315 mutex_lock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 316 ret = idr_alloc(&ac97_adapter_idr, ac97_ctrl, 0, 0, GFP_KERNEL); 74426fbff66eea Robert Jarzmik 2017-09-02 317 ac97_ctrl->nr = ret; 74426fbff66eea Robert Jarzmik 2017-09-02 318 if (ret >= 0) { 74426fbff66eea Robert Jarzmik 2017-09-02 319 dev_set_name(&ac97_ctrl->adap, "ac97-%d", ret); 74426fbff66eea Robert Jarzmik 2017-09-02 320 ac97_ctrl->adap.type = &ac97_adapter_type; 74426fbff66eea Robert Jarzmik 2017-09-02 321 ac97_ctrl->adap.parent = ac97_ctrl->parent; 74426fbff66eea Robert Jarzmik 2017-09-02 322 ret = device_register(&ac97_ctrl->adap); 74426fbff66eea Robert Jarzmik 2017-09-02 323 if (ret) 74426fbff66eea Robert Jarzmik 2017-09-02 324 put_device(&ac97_ctrl->adap); 74426fbff66eea Robert Jarzmik 2017-09-02 325 } 74426fbff66eea Robert Jarzmik 2017-09-02 326 if (!ret) 74426fbff66eea Robert Jarzmik 2017-09-02 327 list_add(&ac97_ctrl->controllers, &ac97_controllers); 74426fbff66eea Robert Jarzmik 2017-09-02 328 mutex_unlock(&ac97_controllers_mutex); 74426fbff66eea Robert Jarzmik 2017-09-02 329 74426fbff66eea Robert Jarzmik 2017-09-02 330 if (!ret) 74426fbff66eea Robert Jarzmik 2017-09-02 331 dev_dbg(&ac97_ctrl->adap, "adapter registered by %s\n", 74426fbff66eea Robert Jarzmik 2017-09-02 332 dev_name(ac97_ctrl->parent)); 74426fbff66eea Robert Jarzmik 2017-09-02 333 return ret; 74426fbff66eea Robert Jarzmik 2017-09-02 334 } 74426fbff66eea Robert Jarzmik 2017-09-02 335 74426fbff66eea Robert Jarzmik 2017-09-02 336 /** 74426fbff66eea Robert Jarzmik 2017-09-02 337 * snd_ac97_controller_register - register an ac97 controller 74426fbff66eea Robert Jarzmik 2017-09-02 338 * @ops: the ac97 bus operations 74426fbff66eea Robert Jarzmik 2017-09-02 339 * @dev: the device providing the ac97 DC function 74426fbff66eea Robert Jarzmik 2017-09-02 340 * @slots_available: mask of the ac97 codecs that can be scanned and probed 74426fbff66eea Robert Jarzmik 2017-09-02 341 * bit0 => codec 0, bit1 => codec 1 ... bit 3 => codec 3 74426fbff66eea Robert Jarzmik 2017-09-02 342 * 74426fbff66eea Robert Jarzmik 2017-09-02 343 * Register a digital controller which can control up to 4 ac97 codecs. This is 74426fbff66eea Robert Jarzmik 2017-09-02 344 * the controller side of the AC97 AC-link, while the slave side are the codecs. 74426fbff66eea Robert Jarzmik 2017-09-02 345 * 74426fbff66eea Robert Jarzmik 2017-09-02 346 * Returns a valid controller upon success, negative pointer value upon error 74426fbff66eea Robert Jarzmik 2017-09-02 347 */ 74426fbff66eea Robert Jarzmik 2017-09-02 348 struct ac97_controller *snd_ac97_controller_register( 74426fbff66eea Robert Jarzmik 2017-09-02 349 const struct ac97_controller_ops *ops, struct device *dev, 74426fbff66eea Robert Jarzmik 2017-09-02 350 unsigned short slots_available, void **codecs_pdata) 74426fbff66eea Robert Jarzmik 2017-09-02 @351 { 74426fbff66eea Robert Jarzmik 2017-09-02 352 struct ac97_controller *ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 353 int ret, i; 74426fbff66eea Robert Jarzmik 2017-09-02 354 74426fbff66eea Robert Jarzmik 2017-09-02 355 ac97_ctrl = kzalloc(sizeof(*ac97_ctrl), GFP_KERNEL); 74426fbff66eea Robert Jarzmik 2017-09-02 356 if (!ac97_ctrl) 74426fbff66eea Robert Jarzmik 2017-09-02 357 return ERR_PTR(-ENOMEM); 74426fbff66eea Robert Jarzmik 2017-09-02 358 74426fbff66eea Robert Jarzmik 2017-09-02 359 for (i = 0; i < AC97_BUS_MAX_CODECS && codecs_pdata; i++) 74426fbff66eea Robert Jarzmik 2017-09-02 360 ac97_ctrl->codecs_pdata[i] = codecs_pdata[i]; 74426fbff66eea Robert Jarzmik 2017-09-02 361 74426fbff66eea Robert Jarzmik 2017-09-02 362 ac97_ctrl->ops = ops; 74426fbff66eea Robert Jarzmik 2017-09-02 363 ac97_ctrl->slots_available = slots_available; 74426fbff66eea Robert Jarzmik 2017-09-02 364 ac97_ctrl->parent = dev; 74426fbff66eea Robert Jarzmik 2017-09-02 365 ret = ac97_add_adapter(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 366 74426fbff66eea Robert Jarzmik 2017-09-02 367 if (ret) 74426fbff66eea Robert Jarzmik 2017-09-02 368 goto err; 74426fbff66eea Robert Jarzmik 2017-09-02 369 ac97_bus_reset(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 370 ac97_bus_scan(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 371 74426fbff66eea Robert Jarzmik 2017-09-02 372 return ac97_ctrl; 74426fbff66eea Robert Jarzmik 2017-09-02 373 err: 74426fbff66eea Robert Jarzmik 2017-09-02 374 kfree(ac97_ctrl); 74426fbff66eea Robert Jarzmik 2017-09-02 375 return ERR_PTR(ret); 74426fbff66eea Robert Jarzmik 2017-09-02 376 } 74426fbff66eea Robert Jarzmik 2017-09-02 377 EXPORT_SYMBOL_GPL(snd_ac97_controller_register); 74426fbff66eea Robert Jarzmik 2017-09-02 378 :::::: The code at line 192 was first introduced by commit :::::: 74426fbff66eea8e8d1f42c8238c268d1e63a832 ALSA: ac97: add an ac97 bus :::::: TO: Robert Jarzmik :::::: CC: Mark Brown -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki