Hi Daehwan, Thank you for the patch! Yet something to improve: [auto build test ERROR on krzk/for-next] [also build test ERROR on char-misc/char-misc-testing v5.17-rc7] [cannot apply to usb/usb-testing next-20220307] [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/0day-ci/linux/commits/Daehwan-Jung/usb-host-export-symbols-for-xhci-hooks-usage/20220304-143406 base: https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git for-next config: hexagon-randconfig-r045-20220304 (https://download.01.org/0day-ci/archive/20220308/202203081440.zCZudmlJ-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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/0day-ci/linux/commit/2b6a5d700c2bbb0a3ccfcd6e83a7f7b2ea049db9 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Daehwan-Jung/usb-host-export-symbols-for-xhci-hooks-usage/20220304-143406 git checkout 2b6a5d700c2bbb0a3ccfcd6e83a7f7b2ea049db9 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon 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 errors (new ones prefixed by >>): drivers/usb/host/xhci.c:4361:5: warning: no previous prototype for function 'xhci_address_device' [-Wmissing-prototypes] int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) ^ drivers/usb/host/xhci.c:4361:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) ^ static >> drivers/usb/host/xhci.c:4459:15: error: no member named 'vendor_ops' in 'struct xhci_hcd' return xhci->vendor_ops; ~~~~ ^ drivers/usb/host/xhci.c:5421:23: warning: shift count >= width of type [-Wshift-count-overflow] !dma_set_mask(dev, DMA_BIT_MASK(64))) { ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/host/xhci.c:5421:23: warning: shift count >= width of type [-Wshift-count-overflow] !dma_set_mask(dev, DMA_BIT_MASK(64))) { ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:61: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ drivers/usb/host/xhci.c:5421:23: warning: shift count >= width of type [-Wshift-count-overflow] !dma_set_mask(dev, DMA_BIT_MASK(64))) { ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:86: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ~~~~~~~~~~~~~~~~~^~~~~ include/linux/compiler.h:69:3: note: expanded from macro '__trace_if_value' (cond) ? \ ^~~~ drivers/usb/host/xhci.c:5423:30: warning: shift count >= width of type [-Wshift-count-overflow] dma_set_coherent_mask(dev, DMA_BIT_MASK(64)); ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ 5 warnings and 1 error generated. -- >> drivers/usb/host/xhci-plat.c:205:15: error: no member named 'vendor_ops' in 'struct xhci_hcd' ops = xhci->vendor_ops = xhci_plat_vendor_overwrite.vendor_ops; ~~~~ ^ drivers/usb/host/xhci-plat.c:219:8: error: no member named 'vendor_ops' in 'struct xhci_hcd' xhci->vendor_ops = NULL; ~~~~ ^ drivers/usb/host/xhci-plat.c:268:10: warning: shift count >= width of type [-Wshift-count-overflow] DMA_BIT_MASK(64)); ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ drivers/usb/host/xhci-plat.c:270:43: warning: shift count >= width of type [-Wshift-count-overflow] ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64)); ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ 2 warnings and 2 errors generated. vim +4459 drivers/usb/host/xhci.c 4456 4457 struct xhci_vendor_ops *xhci_vendor_get_ops(struct xhci_hcd *xhci) 4458 { > 4459 return xhci->vendor_ops; 4460 } 4461 EXPORT_SYMBOL_GPL(xhci_vendor_get_ops); 4462 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx