Re: [PATCH] net: memcpy to ethtool_puts

[kernel test robot]

Hi Rosen,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net/main]
[also build test WARNING on net-next/main linus/master horms-ipvs/master v6.12-rc3 next-20241016]
[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/Rosen-Penev/net-memcpy-to-ethtool_puts/20241016-040502
base:   net/main
patch link:    https://lore.kernel.org/r/20241015200222.12452-3-rosenp%40gmail.com
patch subject: [PATCH] net: memcpy to ethtool_puts
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20241016/202410162106.9WmH0oPN-lkp@xxxxxxxxx/config)
compiler: arceb-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241016/202410162106.9WmH0oPN-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410162106.9WmH0oPN-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/net/dsa/mv88e6xxx/chip.c: In function 'mv88e6xxx_get_strings':
>> drivers/net/dsa/mv88e6xxx/chip.c:1215:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
    1215 |         int count = 0;
         |             ^~~~~
   during RTL pass: mach
   drivers/net/dsa/mv88e6xxx/chip.c: In function 'mv88e6xxx_read':
   drivers/net/dsa/mv88e6xxx/chip.c:68:1: internal compiler error: in arc_ifcvt, at config/arc/arc.cc:9703
      68 | }
         | ^
   0x5b78c1 arc_ifcvt
   	/tmp/build-crosstools-gcc-13.2.0-binutils-2.41/gcc/gcc-13.2.0/gcc/config/arc/arc.cc:9703
   0xe431b4 arc_reorg
   	/tmp/build-crosstools-gcc-13.2.0-binutils-2.41/gcc/gcc-13.2.0/gcc/config/arc/arc.cc:8552
   0xaed299 execute
   	/tmp/build-crosstools-gcc-13.2.0-binutils-2.41/gcc/gcc-13.2.0/gcc/reorg.cc:3927
   Please submit a full bug report, with preprocessed source (by using -freport-bug).
   Please include the complete backtrace with any bug report.
   See <https://gcc.gnu.org/bugs/> for instructions.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [y]:
   - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y]


vim +/count +1215 drivers/net/dsa/mv88e6xxx/chip.c

65f60e4582bd32 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-28  1210  
dfafe449bbc91d drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2016-11-21  1211  static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
89f09048348936 drivers/net/dsa/mv88e6xxx/chip.c Florian Fainelli 2018-04-25  1212  				  u32 stringset, uint8_t *data)
f5e2ed022dff60 drivers/net/dsa/mv88e6xxx.c      Andrew Lunn      2015-12-23  1213  {
04bed1434df256 drivers/net/dsa/mv88e6xxx/chip.c Vivien Didelot   2016-08-31  1214  	struct mv88e6xxx_chip *chip = ds->priv;
436fe17d273bed drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-01 @1215  	int count = 0;
dfafe449bbc91d drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2016-11-21  1216  
89f09048348936 drivers/net/dsa/mv88e6xxx/chip.c Florian Fainelli 2018-04-25  1217  	if (stringset != ETH_SS_STATS)
89f09048348936 drivers/net/dsa/mv88e6xxx/chip.c Florian Fainelli 2018-04-25  1218  		return;
89f09048348936 drivers/net/dsa/mv88e6xxx/chip.c Florian Fainelli 2018-04-25  1219  
c9acece064e3f0 drivers/net/dsa/mv88e6xxx/chip.c Rasmus Villemoes 2019-06-20  1220  	mv88e6xxx_reg_lock(chip);
c6c8cd5e3ce494 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-01  1221  
dfafe449bbc91d drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2016-11-21  1222  	if (chip->info->ops->stats_get_strings)
436fe17d273bed drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-01  1223  		count = chip->info->ops->stats_get_strings(chip, data);
436fe17d273bed drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-01  1224  
577149384b2aab drivers/net/dsa/mv88e6xxx/chip.c Rosen Penev      2024-10-15  1225  	if (chip->info->ops->serdes_get_strings)
65f60e4582bd32 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-28  1226  		count = chip->info->ops->serdes_get_strings(chip, port, data);
c6c8cd5e3ce494 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-01  1227  
65f60e4582bd32 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-28  1228  	mv88e6xxx_atu_vtu_get_strings(data);
65f60e4582bd32 drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2018-03-28  1229  
c9acece064e3f0 drivers/net/dsa/mv88e6xxx/chip.c Rasmus Villemoes 2019-06-20  1230  	mv88e6xxx_reg_unlock(chip);
dfafe449bbc91d drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2016-11-21  1231  }
dfafe449bbc91d drivers/net/dsa/mv88e6xxx/chip.c Andrew Lunn      2016-11-21  1232  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki