Re: [PATCH net-next 4/5] net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)

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

Hi Raju,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Raju-Lakkaraju/net-lan743x-PCI11010-PCI11414-devices-Enhancements/20220315-141814
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git bdd6a89de44b9e07d0b106076260d2367fe0e49a
config: i386-randconfig-a015-20220314 (https://download.01.org/0day-ci/archive/20220315/202203151830.yeCpaesp-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a6b2f50fb47da3baeee10b1906da6e30ac5d26ec)
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/11e2990b814fce8f91e9aa9d11d9dc04869d6856
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Raju-Lakkaraju/net-lan743x-PCI11010-PCI11414-devices-Enhancements/20220315-141814
        git checkout 11e2990b814fce8f91e9aa9d11d9dc04869d6856
        # 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=i386 SHELL=/bin/bash drivers/net/ethernet/microchip/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/microchip/lan743x_ptp.c:776:24: warning: variable 'extts' set but not used [-Wunused-but-set-variable]
           struct lan743x_extts *extts;
                                 ^
   1 warning generated.


vim +/extts +776 drivers/net/ethernet/microchip/lan743x_ptp.c

   769	
   770	static int lan743x_ptp_io_extts(struct lan743x_adapter *adapter, int on,
   771					struct ptp_extts_request *extts_request)
   772	{
   773		struct lan743x_ptp *ptp = &adapter->ptp;
   774		u32 flags = extts_request->flags;
   775		u32 index = extts_request->index;
 > 776		struct lan743x_extts *extts;
   777		int extts_pin;
   778		int ret = 0;
   779	
   780		extts = &ptp->extts[index];
   781	
   782		if (on) {
   783			extts_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS, index);
   784			if (extts_pin < 0)
   785				return -EBUSY;
   786	
   787			ret = lan743x_ptp_io_event_cap_en(adapter, flags, index);
   788		} else {
   789			lan743x_ptp_io_extts_off(adapter, index);
   790		}
   791	
   792		return ret;
   793	}
   794	

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