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X-CSE-ConnectionGUID: Bys7/PLeSOCd3Yw98nVYFw== X-CSE-MsgGUID: yLT0k1gYQlmW877wiz5vXg== X-IronPort-AV: E=McAfee;i="6800,10657,11792"; a="90861694" X-IronPort-AV: E=Sophos;i="6.23,246,1770624000"; d="scan'208";a="90861694" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2026 06:17:27 -0700 X-CSE-ConnectionGUID: 59/iZv2aQnS+ieKlUTCMZQ== X-CSE-MsgGUID: Rpv/mkMPRd6OObINseUfYg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,246,1770624000"; d="scan'208";a="237922018" Received: from lkp-server01.sh.intel.com (HELO fdb68b0ce653) ([10.239.97.150]) by fmviesa008.fm.intel.com with ESMTP; 21 May 2026 06:17:25 -0700 Received: from kbuild by fdb68b0ce653 with local (Exim 4.98.2) (envelope-from ) id 1wQ3H7-000000000LF-3sd5; Thu, 21 May 2026 13:17:21 +0000 Date: Thu, 21 May 2026 21:16:40 +0800 From: kernel test robot To: Ashwin Gundarapu , "anthony.l.nguyen@intel.com" , andrewnetdev , davem , edumazet , kuba , pabeni Cc: oe-kbuild-all@lists.linux.dev, intel-wired-lan , linux-kernel Subject: Re: [PATCH net-next] net: e100: replace silent 'hope for the best' with debug message Message-ID: <202605212136.lOMqj24O-lkp@intel.com> References: <19e49280392.4757403170773.5767589851918809405@zohomail.in> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <19e49280392.4757403170773.5767589851918809405@zohomail.in> Hi Ashwin, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Ashwin-Gundarapu/net-e100-replace-silent-hope-for-the-best-with-debug-message/20260521-141158 base: net-next/main patch link: https://lore.kernel.org/r/19e49280392.4757403170773.5767589851918809405%40zohomail.in patch subject: [PATCH net-next] net: e100: replace silent 'hope for the best' with debug message config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20260521/202605212136.lOMqj24O-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260521/202605212136.lOMqj24O-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/202605212136.lOMqj24O-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/net/ethernet/intel/e100.c: In function 'e100_phy_init': >> drivers/net/ethernet/intel/e100.c:1455:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 1455 | if (e100_phy_check_without_mii(nic)) | ^~ drivers/net/ethernet/intel/e100.c:1458:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 1458 | return 0; | ^~~~~~ drivers/net/ethernet/intel/e100.c:1459:17: error: expected '}' before 'else' 1459 | else { | ^~~~ >> drivers/net/ethernet/intel/e100.c:1439:39: warning: unused variable 'cong' [-Wunused-variable] 1439 | u16 bmcr, stat, id_lo, id_hi, cong; | ^~~~ >> drivers/net/ethernet/intel/e100.c:1439:32: warning: unused variable 'id_hi' [-Wunused-variable] 1439 | u16 bmcr, stat, id_lo, id_hi, cong; | ^~~~~ >> drivers/net/ethernet/intel/e100.c:1439:25: warning: unused variable 'id_lo' [-Wunused-variable] 1439 | u16 bmcr, stat, id_lo, id_hi, cong; | ^~~~~ drivers/net/ethernet/intel/e100.c: At top level: drivers/net/ethernet/intel/e100.c:1465:11: error: expected identifier or '(' before 'else' 1465 | } else | ^~~~ In file included from include/linux/skbuff.h:39, from include/net/net_namespace.h:44, from include/linux/netdevice.h:38, from drivers/net/ethernet/intel/e100.c:140: include/net/net_debug.h:88:3: error: expected identifier or '(' before 'while' 88 | } while (0) | ^~~~~ drivers/net/ethernet/intel/e100.c:1466:17: note: in expansion of macro 'netif_printk' 1466 | netif_printk(nic, hw, KERN_DEBUG, nic->netdev, | ^~~~~~~~~~~~ >> drivers/net/ethernet/intel/e100.c:1470:9: warning: data definition has no type or storage class 1470 | id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1); | ^~~~~ drivers/net/ethernet/intel/e100.c:1470:9: error: type defaults to 'int' in declaration of 'id_lo' [-Wimplicit-int] drivers/net/ethernet/intel/e100.c:1470:27: error: 'netdev' undeclared here (not in a function); did you mean 'net_eq'? 1470 | id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1); | ^~~~~~ | net_eq drivers/net/ethernet/intel/e100.c:1470:35: error: 'nic' undeclared here (not in a function) 1470 | id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1); | ^~~ drivers/net/ethernet/intel/e100.c:1471:9: warning: data definition has no type or storage class 1471 | id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2); | ^~~~~ drivers/net/ethernet/intel/e100.c:1471:9: error: type defaults to 'int' in declaration of 'id_hi' [-Wimplicit-int] drivers/net/ethernet/intel/e100.c:1472:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '->' token 1472 | nic->phy = (u32)id_hi << 16 | (u32)id_lo; | ^~ include/net/net_debug.h:85:1: error: expected identifier or '(' before 'do' 85 | do { \ | ^~ drivers/net/ethernet/intel/e100.c:1473:9: note: in expansion of macro 'netif_printk' 1473 | netif_printk(nic, hw, KERN_DEBUG, nic->netdev, | ^~~~~~~~~~~~ include/net/net_debug.h:88:3: error: expected identifier or '(' before 'while' 88 | } while (0) | ^~~~~ drivers/net/ethernet/intel/e100.c:1473:9: note: in expansion of macro 'netif_printk' 1473 | netif_printk(nic, hw, KERN_DEBUG, nic->netdev, | ^~~~~~~~~~~~ drivers/net/ethernet/intel/e100.c:1477:9: error: expected identifier or '(' before 'for' 1477 | for (addr = 0; addr < 32; addr++) { | ^~~ drivers/net/ethernet/intel/e100.c:1477:29: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token 1477 | for (addr = 0; addr < 32; addr++) { | ^ drivers/net/ethernet/intel/e100.c:1477:39: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token 1477 | for (addr = 0; addr < 32; addr++) { | ^~ drivers/net/ethernet/intel/e100.c:1491:9: error: expected identifier or '(' before 'if' 1491 | if (nic->phy == phy_82552_v) | ^~ drivers/net/ethernet/intel/e100.c:1497:9: error: expected identifier or '(' before 'if' 1497 | if ((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) { | ^~ drivers/net/ethernet/intel/e100.c:1505:9: error: expected identifier or '(' before 'if' 1505 | if (nic->phy == phy_82552_v) { | ^~ drivers/net/ethernet/intel/e100.c:1519:11: error: expected identifier or '(' before 'else' 1519 | } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) && | ^~~~ drivers/net/ethernet/intel/e100.c:1527:9: error: expected identifier or '(' before 'return' 1527 | return 0; | ^~~~~~ drivers/net/ethernet/intel/e100.c:1528:1: error: expected identifier or '(' before '}' token 1528 | } | ^ >> drivers/net/ethernet/intel/e100.c:958:12: warning: 'mdio_ctrl_phy_82552_v' defined but not used [-Wunused-function] 958 | static u16 mdio_ctrl_phy_82552_v(struct nic *nic, | ^~~~~~~~~~~~~~~~~~~~~ vim +/if +1455 drivers/net/ethernet/intel/e100.c 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1430 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1431 #define NCONFIG_AUTO_SWITCH 0x0080 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1432 #define MII_NSC_CONG MII_RESV1 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1433 #define NSC_CONG_ENABLE 0x0100 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1434 #define NSC_CONG_TXREADY 0x0400 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1435 static int e100_phy_init(struct nic *nic) ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1436 { ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1437 struct net_device *netdev = nic->netdev; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1438 u32 addr; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 @1439 u16 bmcr, stat, id_lo, id_hi, cong; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1440 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1441 /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */ ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1442 for (addr = 0; addr < 32; addr++) { ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1443 nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1444 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1445 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1446 stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1447 if (!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0)))) ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1448 break; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1449 } 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1450 if (addr == 32) { 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1451 /* uhoh, no PHY detected: check whether we seem to be some 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1452 * weird, rare variant which is *known* to not have any MII. 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1453 * But do this AFTER MII checking only, since this does 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1454 * lookup of EEPROM values which may easily be unreliable. */ 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 @1455 if (e100_phy_check_without_mii(nic)) e95e8b2860fba4c drivers/net/ethernet/intel/e100.c Ashwin Gundarapu 2026-05-10 1456 netif_dbg(nic, probe, nic->netdev, e95e8b2860fba4c drivers/net/ethernet/intel/e100.c Ashwin Gundarapu 2026-05-10 1457 "No MII PHY detected, continuing anyway\n"); e95e8b2860fba4c drivers/net/ethernet/intel/e100.c Ashwin Gundarapu 2026-05-10 @1458 return 0; 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 @1459 else { 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1460 /* for unknown cases log a fatal error */ fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1461 netif_err(nic, hw, nic->netdev, fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1462 "Failed to locate any known PHY, aborting\n"); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1463 return -EAGAIN; 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1464 } 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1465 } else fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1466 netif_printk(nic, hw, KERN_DEBUG, nic->netdev, fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1467 "phy_addr = %d\n", nic->mii.phy_id); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1468 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1469 /* Get phy ID */ ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 @1470 id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1471 id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1472 nic->phy = (u32)id_hi << 16 | (u32)id_lo; fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1473 netif_printk(nic, hw, KERN_DEBUG, nic->netdev, fa05e1ad1b61b37 drivers/net/e100.c Joe Perches 2010-03-16 1474 "phy ID = 0x%08X\n", nic->phy); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1475 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1476 /* Select the phy and isolate the rest */ 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1477 for (addr = 0; addr < 32; addr++) { 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1478 if (addr != nic->mii.phy_id) { 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1479 mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE); 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1480 } else if (nic->phy != phy_82552_v) { 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1481 bmcr = mdio_read(netdev, addr, MII_BMCR); 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1482 mdio_write(netdev, addr, MII_BMCR, 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1483 bmcr & ~BMCR_ISOLATE); 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1484 } 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1485 } 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1486 /* 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1487 * Workaround for 82552: 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1488 * Clear the ISOLATE bit on selected phy_id last (mirrored on all 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1489 * other phy_id's) using bmcr value from addr discovery loop above. 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1490 */ 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1491 if (nic->phy == phy_82552_v) 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1492 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1493 bmcr & ~BMCR_ISOLATE); 8fbd962e39517df drivers/net/e100.c Bruce Allan 2009-10-29 1494 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1495 /* Handle National tx phys */ ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1496 #define NCS_PHY_MODEL_MASK 0xFFF0FFFF ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1497 if ((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) { ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1498 /* Disable congestion control */ ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1499 cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1500 cong |= NSC_CONG_TXREADY; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1501 cong &= ~NSC_CONG_ENABLE; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1502 mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong); ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1503 } ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1504 b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1505 if (nic->phy == phy_82552_v) { b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1506 u16 advert = mdio_read(netdev, nic->mii.phy_id, MII_ADVERTISE); b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1507 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1508 /* assign special tweaked mdio_ctrl() function */ 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1509 nic->mdio_ctrl = mdio_ctrl_phy_82552_v; 720017623ab294b drivers/net/e100.c Andreas Mohr 2009-06-10 1510 b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1511 /* Workaround Si not advertising flow-control during autoneg */ b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1512 advert |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1513 mdio_write(netdev, nic->mii.phy_id, MII_ADVERTISE, advert); b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1514 b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1515 /* Reset for the above changes to take effect */ b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1516 bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR); b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1517 bmcr |= BMCR_RESET; b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 1518 mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr); b55de80e4989200 drivers/net/e100.c Bruce Allan 2009-03-21 @1519 } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) && 60ffa478759f39a drivers/net/e100.c Jeff Kirsher 2006-08-16 1520 (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) && d4ef55288aa2e1b drivers/net/ethernet/intel/e100.c Jesse Brandeburg 2021-03-25 1521 (le16_to_cpu(nic->eeprom[eeprom_cnfg_mdix]) & eeprom_mdix_enabled))) { 60ffa478759f39a drivers/net/e100.c Jeff Kirsher 2006-08-16 1522 /* enable/disable MDI/MDI-X auto-switching. */ 60ffa478759f39a drivers/net/e100.c Jeff Kirsher 2006-08-16 1523 mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG, 60ffa478759f39a drivers/net/e100.c Jeff Kirsher 2006-08-16 1524 nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH); 648951451e6d2d5 drivers/net/e100.c Malli Chilakala 2005-06-17 1525 } ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1526 ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1527 return 0; ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1528 } ^1da177e4c3f415 drivers/net/e100.c Linus Torvalds 2005-04-16 1529 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki