Hi Jyan, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on ulf-hansson-mmc-mirror/next v6.6-rc6 next-20231018] [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: csky-randconfig-001-20231019 (https://download.01.org/0day-ci/archive/20231019/202310191631.Hp1KsdtD-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310191631.Hp1KsdtD-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/202310191631.Hp1KsdtD-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/mmc/host/sdhci_am654.c:17: >> drivers/mmc/host/cqhci.h:292:40: warning: 'struct mmc_data' declared inside parameter list will not be visible outside of this definition or declaration 292 | void (*setup_tran_desc)(struct mmc_data *data, | ^~~~~~~~ -- >> drivers/mmc/host/cqhci-core.c:477:6: warning: no previous prototype for 'cqhci_set_tran_desc' [-Wmissing-prototypes] 477 | void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, | ^~~~~~~~~~~~~~~~~~~ vim +292 drivers/mmc/host/cqhci.h 281 282 struct cqhci_host_ops { 283 void (*dumpregs)(struct mmc_host *mmc); 284 void (*write_l)(struct cqhci_host *host, u32 val, int reg); 285 u32 (*read_l)(struct cqhci_host *host, int reg); 286 void (*enable)(struct mmc_host *mmc); 287 void (*disable)(struct mmc_host *mmc, bool recovery); 288 void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq, 289 u64 *data); 290 void (*pre_enable)(struct mmc_host *mmc); 291 void (*post_disable)(struct mmc_host *mmc); > 292 void (*setup_tran_desc)(struct mmc_data *data, 293 struct cqhci_host *cq_host, u8 *desc, int sg_count); 294 #ifdef CONFIG_MMC_CRYPTO 295 int (*program_key)(struct cqhci_host *cq_host, 296 const union cqhci_crypto_cfg_entry *cfg, int slot); 297 #endif 298 }; 299 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki