tree: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next head: 00850d7b542aa4a8240cf977d43dc6d2158e48d7 commit: 5b53a9d40c4f83b44de8da06af9a9c9b3fb14988 [104/120] Input: serio_raw - use guard notation for locks and other resources config: i386-buildonly-randconfig-002-20241019 (https://download.01.org/0day-ci/archive/20241020/202410201730.ItNhUTIv-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241020/202410201730.ItNhUTIv-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410201730.ItNhUTIv-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/input/serio/serio_raw.c:204:12: warning: variable 'written' is uninitialized when used here [-Wuninitialized] 204 | return written ?: -EIO; | ^~~~~~~ drivers/input/serio/serio_raw.c:188:13: note: initialize the variable 'written' to silence this warning 188 | int written; | ^ | = 0 1 warning generated. vim +/written +204 drivers/input/serio/serio_raw.c 182 183 static ssize_t serio_raw_write(struct file *file, const char __user *buffer, 184 size_t count, loff_t *ppos) 185 { 186 struct serio_raw_client *client = file->private_data; 187 struct serio_raw *serio_raw = client->serio_raw; 188 int written; 189 unsigned char c; 190 191 scoped_guard(mutex_intr, &serio_raw_mutex) { 192 if (serio_raw->dead) 193 return -ENODEV; 194 195 if (count > 32) 196 count = 32; 197 198 while (count--) { 199 if (get_user(c, buffer++)) 200 return -EFAULT; 201 202 if (serio_write(serio_raw->serio, c)) { 203 /* Either signal error or partial write */ > 204 return written ?: -EIO; 205 } 206 207 written++; 208 } 209 210 return written; 211 } 212 213 return -EINTR; 214 } 215 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
