tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.4 head: 2f0d6ab78bfe46b225a4e29a8caff75b1833348d commit: 910f35afd3c63b32145b82d55016a61d82e54c8a [27/28] usb: Fix out of sync data toggle if a configured device is reconfigured config: x86_64-randconfig-a003-20200917 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1321160a26e7e489baf9b10d6de90a342f898960) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 910f35afd3c63b32145b82d55016a61d82e54c8a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): if (mac_addr == FAILURE) ~~~~~~~~ ^ ~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:174:16: note: expanded from macro '__trace_if' ______r = !!(cond); \ ^~~~ drivers/net/ethernet/neterion/s2io.c:5110:16: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (mac_addr == FAILURE) ~~~~~~~~ ^ ~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:163:30: note: expanded from macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ drivers/net/ethernet/neterion/s2io.c:5110:16: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (mac_addr == FAILURE) ~~~~~~~~ ^ ~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:163:42: note: expanded from macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ drivers/net/ethernet/neterion/s2io.c:5419:16: warning: comparison of integers of different signs: 'int' and '__u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < regs->len; i += 8) { ~ ^ ~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:5519:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < sp->config.rx_ring_num; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:5524:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < sp->config.tx_fifo_num; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:5852:20: warning: comparison of integers of different signs: '__u32' (aka 'unsigned int') and 'int' [-Wsign-compare] if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) { ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:174:16: note: expanded from macro '__trace_if' ______r = !!(cond); \ ^~~~ drivers/net/ethernet/neterion/s2io.c:5852:20: warning: comparison of integers of different signs: '__u32' (aka 'unsigned int') and 'int' [-Wsign-compare] if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) { ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:163:30: note: expanded from macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ drivers/net/ethernet/neterion/s2io.c:5852:20: warning: comparison of integers of different signs: '__u32' (aka 'unsigned int') and 'int' [-Wsign-compare] if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) { ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:161:36: note: expanded from macro 'if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~ include/linux/compiler.h:163:42: note: expanded from macro '__trace_if' if (__builtin_constant_p(!!(cond)) ? !!(cond) : \ ^~~~ drivers/net/ethernet/neterion/s2io.c:6933:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->rx_ring_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7088:15: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (; off < sp->config.rx_ring_num; off++) ~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7172:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->rx_ring_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7192:18: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < sp->config.rx_ring_num; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7830:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->tx_fifo_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7842:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->tx_fifo_num; i++) ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7847:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->tx_fifo_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7861:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->rx_ring_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7874:16: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] for (i = 0; i < rx_ring_num; i++) { ~ ^ ~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:7973:17: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < config->rx_ring_num ; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:8049:16: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < sp->config.tx_fifo_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/neterion/s2io.c:8127:17: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < sp->config.tx_fifo_num; i++) { ~ ^ ~~~~~~~~~~~~~~~~~~~~~~ 142 warnings generated. /tmp/s2io-409947.s: Assembler messages: /tmp/s2io-409947.s:42767: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/s2io-409947.s:43443: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/s2io-409947.s:51771: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/s2io-409947.s:56262: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org