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Wysocki" Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Andrew Morton , Linux Memory Management List References: <202501231452.84vwjQqo-lkp@intel.com> Content-Language: en-US From: Randy Dunlap In-Reply-To: <202501231452.84vwjQqo-lkp@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: AF65640007 X-Stat-Signature: bqp9ozb4m61y4krhaxe3apq4e1yx889c X-HE-Tag: 1737618276-556266 X-HE-Meta: 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 d9g/ebi1 PFLA9pu7jrGkzLZ7PbJdH89KOxamVCJMQJNrk62gLkNZgoiuke5fZPQT1vvf3quGyQ9ZsgA/LzNAYtr2Zm1W3F47TxHlZrskc8BFhEzXkHnWjfRN3i9MaQ59r8dvGByCneXaRnzG7BT12smvQ91wkEoRHiDC21z6RRkZ8Gv0s3P0CYkNOJ4zPTPF6JRHKbHHnAVT+CZry6iGYzg7SWgvhu5TXYuMGEaFSqbidw2hJDx8VtufrhAksRRzT1JJ2s5gXrnF2KPEy4+yXx/TXRfokewVXz2Fomk7JYOFdRK7CP6Ppb9CRvPHjyLipbfezw7Uom5tLIKl3dRXtSUonxOxO/JxPrV2TfflqFdo3FwFh7cZMA82s/lr1Apx04OkQPgvqh1+JGrgg/DfEsvCnKfy1zhpGuD1w+WxZn5DXRvuWozv9xCQ= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi robot, On 1/22/25 10:59 PM, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 21266b8df5224c4f677acf9f353eecc9094731f0 > commit: 7be6a87c2473957090995b7eb541e31d57a2c801 sparc: allow PM configs for sparc32 COMPILE_TEST ^^^ Not relevant. > date: 1 year, 11 months ago > config: sparc-randconfig-r032-20230416 (https://download.01.org/0day-ci/archive/20250123/202501231452.84vwjQqo-lkp@intel.com/config) > compiler: sparc-linux-gcc (GCC) 12.4.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250123/202501231452.84vwjQqo-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/202501231452.84vwjQqo-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > >>> drivers/base/power/runtime.c:362: warning: Excess function parameter 'dev' description in '__rpm_callback' > > > vim +362 drivers/base/power/runtime.c > > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 354 > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 355 /** > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 356 * __rpm_callback - Run a given runtime PM callback for a given device. > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 357 * @cb: Runtime PM callback to run. > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 358 * @dev: Device to run the callback for. > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 359 */ > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 360 static int __rpm_callback(int (*cb)(struct device *), struct device *dev) > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 361 __releases(&dev->power.lock) __acquires(&dev->power.lock) The kernel-doc warning is a bug in scripts/kernel-doc. I don't know of anyone who is working on that bug. The only fix that I know of for now is to change the /** to plain /* to that the comment is not considered as kernel-doc notation. That should be OK since this is a static function, not exported. > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 @362 { > 63d00be69348fd Ulf Hansson 2021-06-08 363 int retval = 0, idx; > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 364 bool use_links = dev->power.links_count > 0; > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 365 > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 366 if (dev->power.irq_safe) { > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 367 spin_unlock(&dev->power.lock); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 368 } else { > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 369 spin_unlock_irq(&dev->power.lock); > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 370 > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 371 /* > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 372 * Resume suppliers if necessary. > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 373 * > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 374 * The device's runtime PM status cannot change until this > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 375 * routine returns, so it is safe to read the status outside of > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 376 * the lock. > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 377 */ > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 378 if (use_links && dev->power.runtime_status == RPM_RESUMING) { > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 379 idx = device_links_read_lock(); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 380 > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 381 retval = rpm_get_suppliers(dev); > 5244f5e2d80125 Rafael J. Wysocki 2021-03-19 382 if (retval) { > 5244f5e2d80125 Rafael J. Wysocki 2021-03-19 383 rpm_put_suppliers(dev); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 384 goto fail; > 5244f5e2d80125 Rafael J. Wysocki 2021-03-19 385 } > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 386 > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 387 device_links_read_unlock(idx); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 388 } > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 389 } > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 390 > 63d00be69348fd Ulf Hansson 2021-06-08 391 if (cb) > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 392 retval = cb(dev); > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 393 > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 394 if (dev->power.irq_safe) { > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 395 spin_lock(&dev->power.lock); > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 396 } else { > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 397 /* > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 398 * If the device is suspending and the callback has returned > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 399 * success, drop the usage counters of the suppliers that have > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 400 * been reference counted on its resume. > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 401 * > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 402 * Do that if resume fails too. > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 403 */ > dbfa44782787dc Rafael J. Wysocki 2022-12-05 404 if (use_links && > dbfa44782787dc Rafael J. Wysocki 2022-12-05 405 ((dev->power.runtime_status == RPM_SUSPENDING && !retval) || > dbfa44782787dc Rafael J. Wysocki 2022-12-05 406 (dev->power.runtime_status == RPM_RESUMING && retval))) { > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 407 idx = device_links_read_lock(); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 408 > 5244f5e2d80125 Rafael J. Wysocki 2021-03-19 409 __rpm_put_suppliers(dev, false); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 410 > 5244f5e2d80125 Rafael J. Wysocki 2021-03-19 411 fail: > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 412 device_links_read_unlock(idx); > 0cab893f409c53 Rafael J. Wysocki 2021-03-19 413 } > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 414 > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 415 spin_lock_irq(&dev->power.lock); > 21d5c57b372616 Rafael J. Wysocki 2016-10-30 416 } > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 417 > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 418 return retval; > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 419 } > ad3c36a534bc7b Rafael J. Wysocki 2011-09-27 420 > > :::::: The code at line 362 was first introduced by commit > :::::: ad3c36a534bc7b945d7bffdda1c62e13bf93489a PM / Runtime: Don't run callbacks under lock for power.irq_safe set > > :::::: TO: Rafael J. Wysocki > :::::: CC: Rafael J. Wysocki So why is this email not sent to Rafael? I added his email address. Thanks so much! -- ~Randy