Hi Jedrzej,

kernel test robot noticed the following build errors:

[auto build test ERROR on tnguy-next-queue/dev-queue]

url:    https://github.com/intel-lab-lkp/linux/commits/Jedrzej-Jagielski/ixgbe-E610-force-phy-link-to-get-down-when-interface-is-down/20260706-180351
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue
patch link:    https://lore.kernel.org/r/20260706094330.186341-1-jedrzej.jagielski%40intel.com
patch subject: [Intel-wired-lan] [PATCH iwl-next v2] ixgbe: E610: force phy link to get down when interface is down
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260706/202607062312.8lqgVLms-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260706/202607062312.8lqgVLms-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202607062312.8lqgVLms-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

quoted

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:7572:4: error: call to undeclared function 'e_error'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

    7572 |                         e_error(drv, "Cannot set PHY link down\n");
         |                         ^

quoted

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:7572:12: error: use of undeclared identifier 'drv'

    7572 |                         e_error(drv, "Cannot set PHY link down\n");
         |                                 ^~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8928:14: warning: division by zero is undefined [-Wdivision-by-zero]
    8928 |         cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN,
         |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8929 |                                    IXGBE_ADVTXD_DCMD_VLE);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8932:14: warning: division by zero is undefined [-Wdivision-by-zero]
    8932 |         cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO,
         |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8933 |                                    IXGBE_ADVTXD_DCMD_TSE);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8936:14: warning: division by zero is undefined [-Wdivision-by-zero]
    8936 |         cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP,
         |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8937 |                                    IXGBE_ADVTXD_MAC_TSTAMP);
         |                                    ~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8940:14: warning: division by zero is undefined [-Wdivision-by-zero]
    8940 |         cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS);
         |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8951:19: warning: division by zero is undefined [-Wdivision-by-zero]
    8951 |         olinfo_status |= IXGBE_SET_FLAG(tx_flags,
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~
    8952 |                                         IXGBE_TX_FLAGS_CSUM,
         |                                         ~~~~~~~~~~~~~~~~~~~~
    8953 |                                         IXGBE_ADVTXD_POPTS_TXSM);
         |                                         ~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8956:19: warning: division by zero is undefined [-Wdivision-by-zero]
    8956 |         olinfo_status |= IXGBE_SET_FLAG(tx_flags,
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~
    8957 |                                         IXGBE_TX_FLAGS_IPV4,
         |                                         ~~~~~~~~~~~~~~~~~~~~
    8958 |                                         IXGBE_ADVTXD_POPTS_IXSM);
         |                                         ~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8961:19: warning: division by zero is undefined [-Wdivision-by-zero]
    8961 |         olinfo_status |= IXGBE_SET_FLAG(tx_flags,
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~
    8962 |                                         IXGBE_TX_FLAGS_IPSEC,
         |                                         ~~~~~~~~~~~~~~~~~~~~~
    8963 |                                         IXGBE_ADVTXD_POPTS_IPSEC);
         |                                         ~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8969:19: warning: division by zero is undefined [-Wdivision-by-zero]
    8969 |         olinfo_status |= IXGBE_SET_FLAG(tx_flags,
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~
    8970 |                                         IXGBE_TX_FLAGS_CC,
         |                                         ~~~~~~~~~~~~~~~~~~
    8971 |                                         IXGBE_ADVTXD_CC);
         |                                         ~~~~~~~~~~~~~~~~
   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:8918:26: note: expanded from macro 'IXGBE_SET_FLAG'
    8918 |          ((u32)(_input & _flag) / (_flag / _result)))
         |                                 ^ ~~~~~~~~~~~~~~~~~
   8 warnings and 2 errors generated.


vim +/e_error +7572 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

  7544	
  7545	/**
  7546	 * ixgbe_close - Disables a network interface
  7547	 * @netdev: network interface device structure
  7548	 *
  7549	 * Returns 0, this is not allowed to fail
  7550	 *
  7551	 * The close entry point is called when an interface is de-activated
  7552	 * by the OS.  The hardware is still under the drivers control, but
  7553	 * needs to be disabled.  A global MAC reset is issued to stop the
  7554	 * hardware, and all transmit and receive resources are freed.
  7555	 **/
  7556	int ixgbe_close(struct net_device *netdev)
  7557	{
  7558		struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
  7559	
  7560		ixgbe_ptp_stop(adapter);
  7561	
  7562		if (netif_device_present(netdev))
  7563			ixgbe_close_suspend(adapter);
  7564	
  7565		ixgbe_fdir_filter_exit(adapter);
  7566	
  7567		if (adapter->flags2 & IXGBE_FLAG2_LINK_DOWN_ON_CLOSE) {
  7568			int err;
  7569	
  7570			err = ixgbe_disable_phy_link(&adapter->hw);
  7571			if (err)

7572				e_error(drv, "Cannot set PHY link down\n");

  7573	
  7574			ixgbe_handle_link_down(adapter);
  7575		}
  7576	
  7577		ixgbe_release_hw_control(adapter);
  7578	
  7579		return 0;
  7580	}
  7581	

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