Hi Changming, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on balbi-usb/testing/next peter.chen-usb/ci-for-usb-next v5.7-rc7 next-20200529] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Changming/USB-sisusbvga-series-of-changes-char-to-u8/20200601-012438 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>, old ones prefixed by <<): >> drivers/usb/misc/sisusbvga/sisusb.c:2996:11: error: initialization of 'ssize_t (*)(struct file *, char *, size_t, loff_t *)' {aka 'int (*)(struct file *, char *, unsigned int, long long int *)'} from incompatible pointer type 'ssize_t (*)(struct file *, u8 *, size_t, loff_t *)' {aka 'int (*)(struct file *, unsigned char *, unsigned int, long long int *)'} [-Werror=incompatible-pointer-types] 2996 | .read = sisusb_read, | ^~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb.c:2996:11: note: (near initialization for 'usb_sisusb_fops.read') drivers/usb/misc/sisusbvga/sisusb.c:2997:11: error: initialization of 'ssize_t (*)(struct file *, const char *, size_t, loff_t *)' {aka 'int (*)(struct file *, const char *, unsigned int, long long int *)'} from incompatible pointer type 'ssize_t (*)(struct file *, const u8 *, size_t, loff_t *)' {aka 'int (*)(struct file *, const unsigned char *, unsigned int, long long int *)'} [-Werror=incompatible-pointer-types] 2997 | .write = sisusb_write, | ^~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb.c:2997:11: note: (near initialization for 'usb_sisusb_fops.write') In file included from drivers/usb/misc/sisusbvga/sisusb.c:54: drivers/usb/misc/sisusbvga/sisusb_init.h:695:34: warning: 'SiSUSB_VCLKData' defined but not used [-Wunused-const-variable=] 695 | static const struct SiS_VCLKData SiSUSB_VCLKData[] = { | ^~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:437:35: warning: 'SiSUSB_CRT1Table' defined but not used [-Wunused-const-variable=] 437 | static const struct SiS_CRT1Table SiSUSB_CRT1Table[] = { | ^~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:379:30: warning: 'SiSUSB_RefIndex' defined but not used [-Wunused-const-variable=] 379 | static const struct SiS_Ext2 SiSUSB_RefIndex[] = { | ^~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:300:29: warning: 'SiSUSB_EModeIDTable' defined but not used [-Wunused-const-variable=] 300 | static const struct SiS_Ext SiSUSB_EModeIDTable[] = { | ^~~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:269:36: warning: 'SiSUSB_StandTable' defined but not used [-Wunused-const-variable=] 269 | static const struct SiS_StandTable SiSUSB_StandTable[] = { | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:232:37: warning: 'SiSUSB_ModeResInfo' defined but not used [-Wunused-const-variable=] 232 | static const struct SiS_ModeResInfo SiSUSB_ModeResInfo[] = { | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:224:37: warning: 'SiSUSB_StResInfo' defined but not used [-Wunused-const-variable=] 224 | static const struct SiS_StResInfo_S SiSUSB_StResInfo[] = { | ^~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:219:28: warning: 'SiSUSB_SModeIDTable' defined but not used [-Wunused-const-variable=] 219 | static const struct SiS_St SiSUSB_SModeIDTable[] = { | ^~~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:206:28: warning: 'SiS_VGA_DAC' defined but not used [-Wunused-const-variable=] 206 | static const unsigned char SiS_VGA_DAC[] = { | ^~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:195:28: warning: 'SiS_EGA_DAC' defined but not used [-Wunused-const-variable=] 195 | static const unsigned char SiS_EGA_DAC[] = { | ^~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:184:28: warning: 'SiS_CGA_DAC' defined but not used [-Wunused-const-variable=] 184 | static const unsigned char SiS_CGA_DAC[] = { | ^~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:173:28: warning: 'SiS_MDA_DAC' defined but not used [-Wunused-const-variable=] 173 | static const unsigned char SiS_MDA_DAC[] = { | ^~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:171:29: warning: 'ModeIndex_1280x1024' defined but not used [-Wunused-const-variable=] 171 | static const unsigned short ModeIndex_1280x1024[] = { 0x3a, 0x4d, 0x00, 0x65 }; | ^~~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:170:29: warning: 'ModeIndex_1280x768' defined but not used [-Wunused-const-variable=] 170 | static const unsigned short ModeIndex_1280x768[] = { 0x23, 0x24, 0x00, 0x25 }; | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:169:29: warning: 'ModeIndex_1280x720' defined but not used [-Wunused-const-variable=] 169 | static const unsigned short ModeIndex_1280x720[] = { 0x79, 0x75, 0x00, 0x78 }; | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:168:29: warning: 'ModeIndex_1152x864' defined but not used [-Wunused-const-variable=] 168 | static const unsigned short ModeIndex_1152x864[] = { 0x29, 0x2a, 0x00, 0x2b }; | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:167:29: warning: 'ModeIndex_1024x576' defined but not used [-Wunused-const-variable=] 167 | static const unsigned short ModeIndex_1024x576[] = { 0x71, 0x74, 0x00, 0x77 }; | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:166:29: warning: 'ModeIndex_1024x768' defined but not used [-Wunused-const-variable=] 166 | static const unsigned short ModeIndex_1024x768[] = { 0x38, 0x4a, 0x00, 0x64 }; | ^~~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:165:29: warning: 'ModeIndex_960x600' defined but not used [-Wunused-const-variable=] 165 | static const unsigned short ModeIndex_960x600[] = { 0x20, 0x21, 0x00, 0x22 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:164:29: warning: 'ModeIndex_960x540' defined but not used [-Wunused-const-variable=] 164 | static const unsigned short ModeIndex_960x540[] = { 0x1d, 0x1e, 0x00, 0x1f }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:163:29: warning: 'ModeIndex_856x480' defined but not used [-Wunused-const-variable=] 163 | static const unsigned short ModeIndex_856x480[] = { 0x3f, 0x42, 0x00, 0x45 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:162:29: warning: 'ModeIndex_848x480' defined but not used [-Wunused-const-variable=] 162 | static const unsigned short ModeIndex_848x480[] = { 0x39, 0x3b, 0x00, 0x3e }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:161:29: warning: 'ModeIndex_800x600' defined but not used [-Wunused-const-variable=] 161 | static const unsigned short ModeIndex_800x600[] = { 0x30, 0x47, 0x00, 0x63 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:160:29: warning: 'ModeIndex_800x480' defined but not used [-Wunused-const-variable=] 160 | static const unsigned short ModeIndex_800x480[] = { 0x70, 0x7a, 0x00, 0x76 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:159:29: warning: 'ModeIndex_768x576' defined but not used [-Wunused-const-variable=] 159 | static const unsigned short ModeIndex_768x576[] = { 0x5f, 0x60, 0x00, 0x61 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:158:29: warning: 'ModeIndex_720x576' defined but not used [-Wunused-const-variable=] 158 | static const unsigned short ModeIndex_720x576[] = { 0x32, 0x34, 0x00, 0x36 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:157:29: warning: 'ModeIndex_720x480' defined but not used [-Wunused-const-variable=] 157 | static const unsigned short ModeIndex_720x480[] = { 0x31, 0x33, 0x00, 0x35 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:156:29: warning: 'ModeIndex_640x480' defined but not used [-Wunused-const-variable=] 156 | static const unsigned short ModeIndex_640x480[] = { 0x2e, 0x44, 0x00, 0x62 }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:155:29: warning: 'ModeIndex_640x400' defined but not used [-Wunused-const-variable=] 155 | static const unsigned short ModeIndex_640x400[] = { 0x2f, 0x5d, 0x00, 0x5e }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:154:29: warning: 'ModeIndex_512x384' defined but not used [-Wunused-const-variable=] 154 | static const unsigned short ModeIndex_512x384[] = { 0x52, 0x58, 0x00, 0x5c }; | ^~~~~~~~~~~~~~~~~ drivers/usb/misc/sisusbvga/sisusb_init.h:153:29: warning: 'ModeIndex_400x300' defined but not used [-Wunused-const-variable=] 153 | static const unsigned short ModeIndex_400x300[] = { 0x51, 0x57, 0x00, 0x54 }; vim +2996 drivers/usb/misc/sisusbvga/sisusb.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 2991 066202dd48cf32 Luiz Fernando N. Capitulino 2006-08-05 2992 static const struct file_operations usb_sisusb_fops = { ^1da177e4c3f41 Linus Torvalds 2005-04-16 2993 .owner = THIS_MODULE, ^1da177e4c3f41 Linus Torvalds 2005-04-16 2994 .open = sisusb_open, ^1da177e4c3f41 Linus Torvalds 2005-04-16 2995 .release = sisusb_release, ^1da177e4c3f41 Linus Torvalds 2005-04-16 @2996 .read = sisusb_read, ^1da177e4c3f41 Linus Torvalds 2005-04-16 2997 .write = sisusb_write, ^1da177e4c3f41 Linus Torvalds 2005-04-16 2998 .llseek = sisusb_lseek, 022e468e139573 Jiri Slaby 2019-01-22 2999 #ifdef CONFIG_COMPAT ^1da177e4c3f41 Linus Torvalds 2005-04-16 3000 .compat_ioctl = sisusb_compat_ioctl, ^1da177e4c3f41 Linus Torvalds 2005-04-16 3001 #endif 49f15255465321 Alan Cox 2008-05-22 3002 .unlocked_ioctl = sisusb_ioctl ^1da177e4c3f41 Linus Torvalds 2005-04-16 3003 }; ^1da177e4c3f41 Linus Torvalds 2005-04-16 3004 :::::: The code at line 2996 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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