Hi Jyan, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.6-rc6 next-20231019] [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/Jyan-Chou/mmc-solve-DMA-boundary-limitation-of-CQHCI-driver/20231018-135532 base: linus/master patch link: https://lore.kernel.org/r/20231018055326.18256-2-jyanchou%40realtek.com patch subject: [PATCH V2][1/4] mmc: solve DMA boundary limitation of CQHCI driver config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20231019/202310192006.ZUfTNe5e-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310192006.ZUfTNe5e-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/202310192006.ZUfTNe5e-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/mmc/host/cqhci-core.c:477:6: warning: no previous prototype for function 'cqhci_set_tran_desc' [-Wmissing-prototypes] void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, ^ drivers/mmc/host/cqhci-core.c:477:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, ^ static 1 warning generated. vim +/cqhci_set_tran_desc +477 drivers/mmc/host/cqhci-core.c 476 > 477 void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, 478 bool dma64) 479 { 480 __le32 *attr = (__le32 __force *)desc; 481 482 *attr = (CQHCI_VALID(1) | 483 CQHCI_END(end ? 1 : 0) | 484 CQHCI_INT(0) | 485 CQHCI_ACT(0x4) | 486 CQHCI_DAT_LENGTH(len)); 487 488 if (dma64) { 489 __le64 *dataddr = (__le64 __force *)(desc + 4); 490 491 dataddr[0] = cpu_to_le64(addr); 492 } else { 493 __le32 *dataddr = (__le32 __force *)(desc + 4); 494 495 dataddr[0] = cpu_to_le32(addr); 496 } 497 } 498 EXPORT_SYMBOL(cqhci_set_tran_desc); 499 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
