Hi Xianting, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on tty/tty-testing] [also build test WARNING on char-misc/char-misc-testing soc/for-next v5.14-rc6 next-20210817] [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/Xianting-Tian/make-hvc-pass-dma-capable-memory-to-its-backend/20210817-212556 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing config: i386-randconfig-r021-20210816 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6) 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/f12c3bee9f2413ed7643d858b40ce2337329fdae git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xianting-Tian/make-hvc-pass-dma-capable-memory-to-its-backend/20210817-212556 git checkout f12c3bee9f2413ed7643d858b40ce2337329fdae # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): clang-14: warning: optimization flag '-falign-jumps=0' is not supported [-Wignored-optimization-argument] In file included from drivers/tty/hvc/hvc_console.c:15: In file included from include/linux/kbd_kern.h:5: In file included from include/linux/tty.h:5: In file included from include/linux/fs.h:6: In file included from include/linux/wait_bit.h:8: In file included from include/linux/wait.h:9: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from arch/x86/include/asm/preempt.h:7: In file included from include/linux/thread_info.h:60: arch/x86/include/asm/thread_info.h:172:13: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address] oldframe = __builtin_frame_address(1); ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/thread_info.h:174:11: warning: calling '__builtin_frame_address' with a nonzero argument is unsafe [-Wframe-address] frame = __builtin_frame_address(2); ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/tty/hvc/hvc_console.c:160:18: warning: address of array 'hp->c' will >> always evaluate to 'true' [-Wpointer-bool-conversion] if (!hp || !hp->c) ~~~~~^ 3 warnings generated. vim +160 drivers/tty/hvc/hvc_console.c 136 137 /* 138 * Console APIs, NOT TTY. These APIs are available immediately when 139 * hvc_console_setup() finds adapters. 140 */ 141 142 static void hvc_console_print(struct console *co, const char *b, 143 unsigned count) 144 { 145 char *c; 146 unsigned i = 0, n = 0; 147 int r, donecr = 0, index = co->index; 148 unsigned long flags; 149 struct hvc_struct *hp; 150 151 /* Console access attempt outside of acceptable console range. */ 152 if (index >= MAX_NR_HVC_CONSOLES) 153 return; 154 155 /* This console adapter was removed so it is not usable. */ 156 if (vtermnos[index] == -1) 157 return; 158 159 hp = cons_hvcs[index]; > 160 if (!hp || !hp->c) 161 return; 162 163 c = hp->c; 164 165 spin_lock_irqsave(&hp->c_lock, flags); 166 while (count > 0 || i > 0) { 167 if (count > 0 && i < sizeof(c)) { 168 if (b[n] == '\n' && !donecr) { 169 c[i++] = '\r'; 170 donecr = 1; 171 } else { 172 c[i++] = b[n++]; 173 donecr = 0; 174 --count; 175 } 176 } else { 177 r = cons_ops[index]->put_chars(vtermnos[index], c, i); 178 if (r <= 0) { 179 /* throw away characters on error 180 * but spin in case of -EAGAIN */ 181 if (r != -EAGAIN) { 182 i = 0; 183 } else { 184 hvc_console_flush(cons_ops[index], 185 vtermnos[index]); 186 } 187 } else if (r > 0) { 188 i -= r; 189 if (i > 0) 190 memmove(c, c+r, i); 191 } 192 } 193 } 194 spin_unlock_irqrestore(&hp->c_lock, flags); 195 hvc_console_flush(cons_ops[index], vtermnos[index]); 196 } 197 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
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