Re: [PATCH v2 7/8] auxdisplay: Add Titanmec TM16xx 7-segment display controllers driver

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

Hi Jean-François,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.16-rc4 next-20250630]
[cannot apply to robh/for-next]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jean-Fran-ois-Lessard/dt-bindings-vendor-prefixes-Add-Fuda-Hisi-Microelectronics/20250630-010326
base:   linus/master
patch link:    https://lore.kernel.org/r/20250629131830.50034-1-jefflessard3%40gmail.com
patch subject: [PATCH v2 7/8] auxdisplay: Add Titanmec TM16xx 7-segment display controllers driver
config: um-randconfig-r053-20250701 (https://download.01.org/0day-ci/archive/20250701/202507010941.mDtYLPDi-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507010941.mDtYLPDi-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/202507010941.mDtYLPDi-lkp@intel.com/

All errors (new ones prefixed by >>):

   /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/libgcov.a(_gcov.o): in function `mangle_path':
   (.text+0x1f00): multiple definition of `mangle_path'; fs/seq_file.o:fs/seq_file.c:441: first defined here
   /usr/bin/ld: drivers/auxdisplay/tm16xx.o: in function `spi_sync_transfer':
>> include/linux/spi/spi.h:1464: undefined reference to `spi_sync'
   /usr/bin/ld: drivers/auxdisplay/tm16xx.o: in function `tm16xx_init':
>> drivers/auxdisplay/tm16xx.c:1279: undefined reference to `__spi_register_driver'
   collect2: error: ld returned 1 exit status


vim +1464 include/linux/spi/spi.h

8ae12a0d85987d David Brownell     2006-01-08  1442  
323117ab60156d Geert Uytterhoeven 2016-09-13  1443  /**
323117ab60156d Geert Uytterhoeven 2016-09-13  1444   * spi_sync_transfer - synchronous SPI data transfer
323117ab60156d Geert Uytterhoeven 2016-09-13  1445   * @spi: device with which data will be exchanged
323117ab60156d Geert Uytterhoeven 2016-09-13  1446   * @xfers: An array of spi_transfers
323117ab60156d Geert Uytterhoeven 2016-09-13  1447   * @num_xfers: Number of items in the xfer array
323117ab60156d Geert Uytterhoeven 2016-09-13  1448   * Context: can sleep
323117ab60156d Geert Uytterhoeven 2016-09-13  1449   *
323117ab60156d Geert Uytterhoeven 2016-09-13  1450   * Does a synchronous SPI data transfer of the given spi_transfer array.
323117ab60156d Geert Uytterhoeven 2016-09-13  1451   *
323117ab60156d Geert Uytterhoeven 2016-09-13  1452   * For more specific semantics see spi_sync().
323117ab60156d Geert Uytterhoeven 2016-09-13  1453   *
2ae3de10abfe0b Randy Dunlap       2020-07-15  1454   * Return: zero on success, else a negative error code.
323117ab60156d Geert Uytterhoeven 2016-09-13  1455   */
323117ab60156d Geert Uytterhoeven 2016-09-13  1456  static inline int
323117ab60156d Geert Uytterhoeven 2016-09-13  1457  spi_sync_transfer(struct spi_device *spi, struct spi_transfer *xfers,
323117ab60156d Geert Uytterhoeven 2016-09-13  1458  	unsigned int num_xfers)
323117ab60156d Geert Uytterhoeven 2016-09-13  1459  {
323117ab60156d Geert Uytterhoeven 2016-09-13  1460  	struct spi_message msg;
323117ab60156d Geert Uytterhoeven 2016-09-13  1461  
323117ab60156d Geert Uytterhoeven 2016-09-13  1462  	spi_message_init_with_transfers(&msg, xfers, num_xfers);
323117ab60156d Geert Uytterhoeven 2016-09-13  1463  
323117ab60156d Geert Uytterhoeven 2016-09-13 @1464  	return spi_sync(spi, &msg);
323117ab60156d Geert Uytterhoeven 2016-09-13  1465  }
323117ab60156d Geert Uytterhoeven 2016-09-13  1466  

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