Hi Matthias, I love your patch! Perhaps something to improve: [auto build test WARNING on usb/usb-testing] [also build test WARNING on robh/for-next char-misc/char-misc-testing v5.11-rc7 next-20210125] [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/Matthias-Kaehlcke/USB-misc-Add-onboard_usb_hub-driver/20210211-011551 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 9.3.0 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/15c43f13a680dab0efc2816a9d632d9d6482b6fc git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matthias-Kaehlcke/USB-misc-Add-onboard_usb_hub-driver/20210211-011551 git checkout 15c43f13a680dab0efc2816a9d632d9d6482b6fc # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/usb/misc/onboard_usb_hub.c:277:6: warning: no previous prototype for 'of_is_onboard_usb_hub' [-Wmissing-prototypes] 277 | bool of_is_onboard_usb_hub(const struct device_node *np) | ^~~~~~~~~~~~~~~~~~~~~ drivers/usb/misc/onboard_usb_hub.c: In function 'onboard_hub_probe': >> drivers/usb/misc/onboard_usb_hub.c:234:8: warning: ignoring return value of 'driver_attach', declared with attribute warn_unused_result [-Wunused-result] 234 | (void)driver_attach(&onboard_hub_usbdev_driver.drvwrap.driver); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC vim +/of_is_onboard_usb_hub +277 drivers/usb/misc/onboard_usb_hub.c 199 200 static int onboard_hub_probe(struct platform_device *pdev) 201 { 202 struct device *dev = &pdev->dev; 203 struct onboard_hub *hub; 204 int err; 205 206 hub = devm_kzalloc(dev, sizeof(*hub), GFP_KERNEL); 207 if (!hub) 208 return -ENOMEM; 209 210 hub->vdd = devm_regulator_get(dev, "vdd"); 211 if (IS_ERR(hub->vdd)) 212 return PTR_ERR(hub->vdd); 213 214 hub->dev = dev; 215 mutex_init(&hub->lock); 216 INIT_LIST_HEAD(&hub->udev_list); 217 218 dev_set_drvdata(dev, hub); 219 220 err = devm_device_add_group(dev, &onboard_hub_sysfs_group); 221 if (err) { 222 dev_err(dev, "failed to create sysfs entries: %d\n", err); 223 return err; 224 } 225 226 err = onboard_hub_power_on(hub); 227 if (err) 228 return err; 229 230 /* 231 * The USB driver might have been detached from the USB devices by 232 * onboard_hub_remove() make sure to re-attach it if needed. 233 */ > 234 (void)driver_attach(&onboard_hub_usbdev_driver.drvwrap.driver); 235 236 return 0; 237 } 238 239 static int onboard_hub_remove(struct platform_device *pdev) 240 { 241 struct onboard_hub *hub = dev_get_drvdata(&pdev->dev); 242 struct udev_node *node; 243 struct usb_device *udev; 244 245 hub->going_away = true; 246 247 mutex_lock(&hub->lock); 248 249 /* unbind the USB devices to avoid dangling references to this device */ 250 while (!list_empty(&hub->udev_list)) { 251 node = list_first_entry(&hub->udev_list, struct udev_node, list); 252 udev = node->udev; 253 254 /* 255 * Unbinding the driver will call onboard_hub_remove_usbdev(), 256 * which acquires hub->lock. We must release the lock first. 257 */ 258 get_device(&udev->dev); 259 mutex_unlock(&hub->lock); 260 device_release_driver(&udev->dev); 261 put_device(&udev->dev); 262 mutex_lock(&hub->lock); 263 } 264 265 mutex_unlock(&hub->lock); 266 267 return onboard_hub_power_off(hub); 268 } 269 270 static const struct of_device_id onboard_hub_match[] = { 271 { .compatible = "usbbda,411" }, 272 { .compatible = "usbbda,5411" }, 273 {} 274 }; 275 MODULE_DEVICE_TABLE(of, onboard_hub_match); 276 > 277 bool of_is_onboard_usb_hub(const struct device_node *np) 278 { 279 return !!of_match_node(onboard_hub_match, np); 280 } 281 EXPORT_SYMBOL_GPL(of_is_onboard_usb_hub); 282 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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