Hi Kai-Heng, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.16 next-20220121] [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/Kai-Heng-Feng/net-phy-marvell-Ho... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1d1df41c5a33359a00e919d54eaebfb789711fdc config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220121/202201211407.0fB4ltJZ-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f7b7138a62648f4019c55e4671682af1f851f295) 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/7556c47e56e3c39c1b4ddb5a8171f943b... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kai-Heng-Feng/net-phy-marvell-Honor-phy-LED-set-by-system-firmware-on-a-Dell-hardware/20220120-132020 git checkout 7556c47e56e3c39c1b4ddb5a8171f943b10be919 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/phy/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): phydev->dev_flags |= (u32)dmi->driver_data; ^~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +1465 drivers/net/phy/phy_device.c 1360 1361 /** 1362 * phy_attach_direct - attach a network device to a given PHY device pointer 1363 * @dev: network device to attach 1364 * @phydev: Pointer to phy_device to attach 1365 * @flags: PHY device's dev_flags 1366 * @interface: PHY device's interface 1367 * 1368 * Description: Called by drivers to attach to a particular PHY 1369 * device. The phy_device is found, and properly hooked up 1370 * to the phy_driver. If no driver is attached, then a 1371 * generic driver is used. The phy_device is given a ptr to 1372 * the attaching device, and given a callback for link status 1373 * change. The phy_device is returned to the attaching driver. 1374 * This function takes a reference on the phy device. 1375 */ 1376 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, 1377 u32 flags, phy_interface_t interface) 1378 { 1379 struct mii_bus *bus = phydev->mdio.bus; 1380 struct device *d = &phydev->mdio.dev; 1381 struct module *ndev_owner = NULL; 1382 const struct dmi_system_id *dmi; 1383 bool using_genphy = false; 1384 int err; 1385 1386 /* For Ethernet device drivers that register their own MDIO bus, we 1387 * will have bus->owner match ndev_mod, so we do not want to increment 1388 * our own module->refcnt here, otherwise we would not be able to 1389 * unload later on. 1390 */ 1391 if (dev) 1392 ndev_owner = dev->dev.parent->driver->owner; 1393 if (ndev_owner != bus->owner && !try_module_get(bus->owner)) { 1394 phydev_err(phydev, "failed to get the bus module\n"); 1395 return -EIO; 1396 } 1397 1398 get_device(d); 1399 1400 /* Assume that if there is no driver, that it doesn't 1401 * exist, and we should use the genphy driver. 1402 */ 1403 if (!d->driver) { 1404 if (phydev->is_c45) 1405 d->driver = &genphy_c45_driver.mdiodrv.driver; 1406 else 1407 d->driver = &genphy_driver.mdiodrv.driver; 1408 1409 using_genphy = true; 1410 } 1411 1412 if (!try_module_get(d->driver->owner)) { 1413 phydev_err(phydev, "failed to get the device driver module\n"); 1414 err = -EIO; 1415 goto error_put_device; 1416 } 1417 1418 if (using_genphy) { 1419 err = d->driver->probe(d); 1420 if (err >= 0) 1421 err = device_bind_driver(d); 1422 1423 if (err) 1424 goto error_module_put; 1425 } 1426 1427 if (phydev->attached_dev) { 1428 dev_err(&dev->dev, "PHY already attached\n"); 1429 err = -EBUSY; 1430 goto error; 1431 } 1432 1433 phydev->phy_link_change = phy_link_change; 1434 if (dev) { 1435 phydev->attached_dev = dev; 1436 dev->phydev = phydev; 1437 1438 if (phydev->sfp_bus_attached) 1439 dev->sfp_bus = phydev->sfp_bus; 1440 else if (dev->sfp_bus) 1441 phydev->is_on_sfp_module = true; 1442 } 1443 1444 /* Some Ethernet drivers try to connect to a PHY device before 1445 * calling register_netdevice() -> netdev_register_kobject() and 1446 * does the dev->dev.kobj initialization. Here we only check for 1447 * success which indicates that the network device kobject is 1448 * ready. Once we do that we still need to keep track of whether 1449 * links were successfully set up or not for phy_detach() to 1450 * remove them accordingly. 1451 */ 1452 phydev->sysfs_links = false; 1453 1454 phy_sysfs_create_links(phydev); 1455 1456 if (!phydev->attached_dev) { 1457 err = sysfs_create_file(&phydev->mdio.dev.kobj, 1458 &dev_attr_phy_standalone.attr); 1459 if (err) 1460 phydev_err(phydev, "error creating 'phy_standalone' sysfs entry\n"); 1461 } 1462 1463 dmi = dmi_first_match(platform_flags); 1464 if (dmi) 1466 1467 phydev->dev_flags |= flags; 1468 1469 phydev->interface = interface; 1470 1471 phydev->state = PHY_READY; 1472 1473 /* Port is set to PORT_TP by default and the actual PHY driver will set 1474 * it to different value depending on the PHY configuration. If we have 1475 * the generic PHY driver we can't figure it out, thus set the old 1476 * legacy PORT_MII value. 1477 */ 1478 if (using_genphy) 1479 phydev->port = PORT_MII; 1480 1481 /* Initial carrier state is off as the phy is about to be 1482 * (re)initialized. 1483 */ 1484 if (dev) 1485 netif_carrier_off(phydev->attached_dev); 1486 1487 /* Do initial configuration here, now that 1488 * we have certain key parameters 1489 * (dev_flags and interface) 1490 */ 1491 err = phy_init_hw(phydev); 1492 if (err) 1493 goto error; 1494 1495 err = phy_disable_interrupts(phydev); 1496 if (err) 1497 return err; 1498 1499 phy_resume(phydev); 1500 phy_led_triggers_register(phydev); 1501 1502 return err; 1503 1504 error: 1505 /* phy_detach() does all of the cleanup below */ 1506 phy_detach(phydev); 1507 return err; 1508 1509 error_module_put: 1510 module_put(d->driver->owner); 1511 error_put_device: 1512 put_device(d); 1513 if (ndev_owner != bus->owner) 1514 module_put(bus->owner); 1515 return err; 1516 } 1517 EXPORT_SYMBOL(phy_attach_direct); 1518 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org