Re: [PATCH net-next 11/12] net: enetc: add PTP synchronization support for ENETC v4

[kernel test robot <lkp@intel.com>]

Hi Wei,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Wei-Fang/dt-bindings-ptp-add-bindings-for-NETC-Timer/20250711-152311
base:   net-next/main
patch link:    https://lore.kernel.org/r/20250711065748.250159-12-wei.fang%40nxp.com
patch subject: [PATCH net-next 11/12] net: enetc: add PTP synchronization support for ENETC v4
config: loongarch-randconfig-r062-20250712 (https://download.01.org/0day-ci/archive/20250713/202507130049.KLM4A8GG-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 01c97b4953e87ae455bd4c41e3de3f0f0f29c61c)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250713/202507130049.KLM4A8GG-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507130049.KLM4A8GG-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/net/ethernet/freescale/enetc/enetc.c:3340:7: error: call to undeclared function 'enetc_ptp_clock_is_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    3340 |         if (!enetc_ptp_clock_is_enabled(priv->si))
         |              ^
   drivers/net/ethernet/freescale/enetc/enetc.c:3390:7: error: call to undeclared function 'enetc_ptp_clock_is_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    3390 |         if (!enetc_ptp_clock_is_enabled(priv->si))
         |              ^
   drivers/net/ethernet/freescale/enetc/enetc.c:3602:46: warning: shift count >= width of type [-Wshift-count-overflow]
    3602 |         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
         |                                                     ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:73:54: note: expanded from macro 'DMA_BIT_MASK'
      73 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
         |                                                      ^ ~~~
   1 warning and 2 errors generated.
--
>> drivers/net/ethernet/freescale/enetc/enetc_ethtool.c:927:7: error: call to undeclared function 'enetc_ptp_clock_is_enabled'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     927 |         if (!enetc_ptp_clock_is_enabled(si))
         |              ^
   1 error generated.


vim +/enetc_ptp_clock_is_enabled +3340 drivers/net/ethernet/freescale/enetc/enetc.c

  3332	
  3333	int enetc_hwtstamp_set(struct net_device *ndev,
  3334			       struct kernel_hwtstamp_config *config,
  3335			       struct netlink_ext_ack *extack)
  3336	{
  3337		struct enetc_ndev_priv *priv = netdev_priv(ndev);
  3338		int err, new_offloads = priv->active_offloads;
  3339	
> 3340		if (!enetc_ptp_clock_is_enabled(priv->si))
  3341			return -EOPNOTSUPP;
  3342	
  3343		switch (config->tx_type) {
  3344		case HWTSTAMP_TX_OFF:
  3345			new_offloads &= ~ENETC_F_TX_TSTAMP_MASK;
  3346			break;
  3347		case HWTSTAMP_TX_ON:
  3348			new_offloads &= ~ENETC_F_TX_TSTAMP_MASK;
  3349			new_offloads |= ENETC_F_TX_TSTAMP;
  3350			break;
  3351		case HWTSTAMP_TX_ONESTEP_SYNC:
  3352			if (!enetc_si_is_pf(priv->si))
  3353				return -EOPNOTSUPP;
  3354	
  3355			new_offloads &= ~ENETC_F_TX_TSTAMP_MASK;
  3356			new_offloads |= ENETC_F_TX_ONESTEP_SYNC_TSTAMP;
  3357			break;
  3358		default:
  3359			return -ERANGE;
  3360		}
  3361	
  3362		switch (config->rx_filter) {
  3363		case HWTSTAMP_FILTER_NONE:
  3364			new_offloads &= ~ENETC_F_RX_TSTAMP;
  3365			break;
  3366		default:
  3367			new_offloads |= ENETC_F_RX_TSTAMP;
  3368			config->rx_filter = HWTSTAMP_FILTER_ALL;
  3369		}
  3370	
  3371		if ((new_offloads ^ priv->active_offloads) & ENETC_F_RX_TSTAMP) {
  3372			bool extended = !!(new_offloads & ENETC_F_RX_TSTAMP);
  3373	
  3374			err = enetc_reconfigure(priv, extended, NULL, NULL);
  3375			if (err)
  3376				return err;
  3377		}
  3378	
  3379		priv->active_offloads = new_offloads;
  3380	
  3381		return 0;
  3382	}
  3383	EXPORT_SYMBOL_GPL(enetc_hwtstamp_set);
  3384	

-- 
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https://github.com/intel/lkp-tests/wiki