tree: https://github.com/alaahl/linux.git netdev-next head: 1d9f03c0a15fa01aa14fb295cbc1236403fceb0b commit: 57e661aae6a823140787dbcc34d92e223e2f71c5 [265/280] net: dsa: mv88e6xxx: Link aggregation support config: arm-randconfig-r002-20210115 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 5b42fd8dd4e7e29125a09a41a33af7c9cb57d144) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/alaahl/linux/commit/57e661aae6a823140787dbcc34d92e223e... git remote add alaahl https://github.com/alaahl/linux.git git fetch --no-tags alaahl netdev-next git checkout 57e661aae6a823140787dbcc34d92e223e2f71c5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): return mv88e6xxx_g2_trunk_mapping_write(chip, id, map); ^ drivers/net/dsa/mv88e6xxx/chip.c:5431:9: note: did you mean 'mv88e6xxx_g2_device_mapping_write'? drivers/net/dsa/mv88e6xxx/global2.h:528:19: note: 'mv88e6xxx_g2_device_mapping_write' declared here static inline int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, ^ err = mv88e6xxx_g2_trunk_mask_write(chip, i, true, mask[i]); ^ 2 errors generated. vim +/mv88e6xxx_g2_trunk_mapping_write +5431 drivers/net/dsa/mv88e6xxx/chip.c 5414 5415 static int mv88e6xxx_lag_sync_map(struct dsa_switch *ds, struct net_device *lag) 5416 { 5417 struct mv88e6xxx_chip *chip = ds->priv; 5418 struct dsa_port *dp; 5419 u16 map = 0; 5420 int id; 5421 5422 id = dsa_lag_id(ds->dst, lag); 5423 5424 /* Build the map of all ports to distribute flows destined for 5425 * this LAG. This can be either a local user port, or a DSA 5426 * port if the LAG port is on a remote chip. 5427 */ 5428 dsa_lag_foreach_port(dp, ds->dst, lag) 5429 map |= BIT(dsa_towards_port(ds, dp->ds->index, dp->index)); 5430 5432 } 5433 5434 static const u8 mv88e6xxx_lag_mask_table[8][8] = { 5435 /* Row number corresponds to the number of active members in a 5436 * LAG. Each column states which of the eight hash buckets are 5437 * mapped to the column:th port in the LAG. 5438 * 5439 * Example: In a LAG with three active ports, the second port 5440 * ([2][1]) would be selected for traffic mapped to buckets 5441 * 3,4,5 (0x38). 5442 */ 5443 { 0xff, 0, 0, 0, 0, 0, 0, 0 }, 5444 { 0x0f, 0xf0, 0, 0, 0, 0, 0, 0 }, 5445 { 0x07, 0x38, 0xc0, 0, 0, 0, 0, 0 }, 5446 { 0x03, 0x0c, 0x30, 0xc0, 0, 0, 0, 0 }, 5447 { 0x03, 0x0c, 0x30, 0x40, 0x80, 0, 0, 0 }, 5448 { 0x03, 0x0c, 0x10, 0x20, 0x40, 0x80, 0, 0 }, 5449 { 0x03, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0 }, 5450 { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, 5451 }; 5452 5453 static void mv88e6xxx_lag_set_port_mask(u16 *mask, int port, 5454 int num_tx, int nth) 5455 { 5456 u8 active = 0; 5457 int i; 5458 5459 num_tx = num_tx <= 8 ? num_tx : 8; 5460 if (nth < num_tx) 5461 active = mv88e6xxx_lag_mask_table[num_tx - 1][nth]; 5462 5463 for (i = 0; i < 8; i++) { 5464 if (BIT(i) & active) 5465 mask[i] |= BIT(port); 5466 } 5467 } 5468 5469 static int mv88e6xxx_lag_sync_masks(struct dsa_switch *ds) 5470 { 5471 struct mv88e6xxx_chip *chip = ds->priv; 5472 unsigned int id, num_tx; 5473 struct net_device *lag; 5474 struct dsa_port *dp; 5475 int i, err, nth; 5476 u16 mask[8]; 5477 u16 ivec; 5478 5479 /* Assume no port is a member of any LAG. */ 5480 ivec = BIT(mv88e6xxx_num_ports(chip)) - 1; 5481 5482 /* Disable all masks for ports that _are_ members of a LAG. */ 5483 list_for_each_entry(dp, &ds->dst->ports, list) { 5484 if (!dp->lag_dev || dp->ds != ds) 5485 continue; 5486 5487 ivec &= ~BIT(dp->index); 5488 } 5489 5490 for (i = 0; i < 8; i++) 5491 mask[i] = ivec; 5492 5493 /* Enable the correct subset of masks for all LAG ports that 5494 * are in the Tx set. 5495 */ 5496 dsa_lags_foreach_id(id, ds->dst) { 5497 lag = dsa_lag_dev(ds->dst, id); 5498 if (!lag) 5499 continue; 5500 5501 num_tx = 0; 5502 dsa_lag_foreach_port(dp, ds->dst, lag) { 5503 if (dp->lag_tx_enabled) 5504 num_tx++; 5505 } 5506 5507 if (!num_tx) 5508 continue; 5509 5510 nth = 0; 5511 dsa_lag_foreach_port(dp, ds->dst, lag) { 5512 if (!dp->lag_tx_enabled) 5513 continue; 5514 5515 if (dp->ds == ds) 5516 mv88e6xxx_lag_set_port_mask(mask, dp->index, 5517 num_tx, nth); 5518 5519 nth++; 5520 } 5521 } 5522 5523 for (i = 0; i < 8; i++) { 5525 if (err) 5526 return err; 5527 } 5528 5529 return 0; 5530 } 5531 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org