Hi Daehwan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on usb/usb-testing] [also build test WARNING on krzk/for-next char-misc/char-misc-testing v5.18-rc4 next-20220426] [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] url: https://github.com/intel-lab-lkp/linux/commits/Daehwan-Jung/usb-host-export-symbols-for-xhci-exynos-to-use-xhci-hooks/20220426-181936 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220426/202204262306.mzMIKFKO-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 11.3.0 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 # https://github.com/intel-lab-lkp/linux/commit/05a4937860cedb97b77200b7312a6f009aca2fc6 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Daehwan-Jung/usb-host-export-symbols-for-xhci-exynos-to-use-xhci-hooks/20220426-181936 git checkout 05a4937860cedb97b77200b7312a6f009aca2fc6 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/usb/host/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/usb/host/xhci-mem.c:68:6: warning: no previous prototype for 'xhci_segment_free' [-Wmissing-prototypes] 68 | void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) | ^~~~~~~~~~~~~~~~~ drivers/usb/host/xhci-mem.c:100:6: warning: no previous prototype for 'xhci_link_segments' [-Wmissing-prototypes] 100 | void xhci_link_segments(struct xhci_segment *prev, | ^~~~~~~~~~~~~~~~~~ >> drivers/usb/host/xhci-mem.c:261:6: warning: no previous prototype for 'xhci_remove_stream_mapping' [-Wmissing-prototypes] 261 | void xhci_remove_stream_mapping(struct xhci_ring *ring) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/host/xhci-mem.c:1974:5: warning: no previous prototype for 'xhci_check_trb_in_td_math' [-Wmissing-prototypes] 1974 | int xhci_check_trb_in_td_math(struct xhci_hcd *xhci) | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/xhci_remove_stream_mapping +261 drivers/usb/host/xhci-mem.c 260 > 261 void xhci_remove_stream_mapping(struct xhci_ring *ring) 262 { 263 struct xhci_segment *seg; 264 265 if (WARN_ON_ONCE(ring->trb_address_map == NULL)) 266 return; 267 268 seg = ring->first_seg; 269 do { 270 xhci_remove_segment_mapping(ring->trb_address_map, seg); 271 seg = seg->next; 272 } while (seg != ring->first_seg); 273 } 274 EXPORT_SYMBOL_GPL(xhci_remove_stream_mapping); 275 -- 0-DAY CI Kernel Test Service https://01.org/lkp
