tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: b7bed6628b750ffd687d1da0a170dece4b0c08bd commit: b4eaf3e808dc2abcab55bc72df3b0d15961f33f0 [29379/30000] can: mcp251xfd: fix infinite loop when xmit fails config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240904/202409040151.sxh3qZ5K-lkp@i...) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240904/202409040151.sxh3qZ5K-lkp@i...)

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/202409040151.sxh3qZ5K-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c:2327:6: warning: no previous prototype for function 'mcp251xfd_tx_obj_write_sync' [-Wmissing-prototypes]

2327 | void mcp251xfd_tx_obj_write_sync(struct work_struct *work) | ^ drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c:2327:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2327 | void mcp251xfd_tx_obj_write_sync(struct work_struct *work) | ^ | static drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c:511:1: warning: unused function 'mcp251xfd_chip_set_mode_nowait' [-Wunused-function] 511 | mcp251xfd_chip_set_mode_nowait(const struct mcp251xfd_priv *priv, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated.

vim +/mcp251xfd_tx_obj_write_sync +2327 drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c

2326

2327 void mcp251xfd_tx_obj_write_sync(struct work_struct *work)

2328 { 2329 struct mcp251xfd_priv *priv = container_of(work, struct mcp251xfd_priv, 2330 tx_work); 2331 struct mcp251xfd_tx_obj *tx_obj = priv->tx_work_obj; 2332 struct mcp251xfd_tx_ring *tx_ring = priv->tx; 2333 int err; 2334 2335 err = spi_sync(priv->spi, &tx_obj->msg); 2336 if (err) 2337 mcp251xfd_tx_failure_drop(priv, tx_ring, err); 2338 } 2339