Hi Hans, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 059dd502b263d8a4e2a84809cf1068d6a3905e6f commit: 056f2821b631df2b94d3b017fd1e1eef918ed98d media: cec: extron-da-hd-4k-plus: add the Extron DA HD 4K Plus CEC driver date: 4 months ago config: sparc-randconfig-001-20241212 (https://download.01.org/0day-ci/archive/20241229/202412291544.dM7D6yQz-lkp@xxxxxxxxx/config) compiler: sparc-linux-gcc (GCC) 12.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241229/202412291544.dM7D6yQz-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/202412291544.dM7D6yQz-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c: In function 'extron_cec_adap_transmit': >> drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c:1014:51: warning: 'DCEC' directive output may be truncated writing 4 bytes into a region of size between 0 and 53 [-Wformat-truncation=] 1014 | snprintf(cmd, sizeof(cmd), "W%c%u*%u*%u*%sDCEC", | ^~~~ drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c:1014:9: note: 'snprintf' output between 13 and 72 bytes into a destination of size 61 1014 | snprintf(cmd, sizeof(cmd), "W%c%u*%u*%u*%sDCEC", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1015 | port->direction, port->port.port, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1016 | cec_msg_initiator(msg), cec_msg_destination(msg), buf); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/DCEC +1014 drivers/media/cec/usb/extron-da-hd-4k-plus/extron-da-hd-4k-plus.c 1000 1001 static int extron_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, 1002 u32 signal_free_time, struct cec_msg *msg) 1003 { 1004 struct extron_port *port = cec_get_drvdata(adap); 1005 char buf[CEC_MAX_MSG_SIZE * 3 + 1]; 1006 char cmd[CEC_MAX_MSG_SIZE * 3 + 13]; 1007 unsigned int i; 1008 1009 if (port->disconnected) 1010 return -ENODEV; 1011 buf[0] = 0; 1012 for (i = 0; i < msg->len - 1; i++) 1013 sprintf(buf + i * 3, "%%%02X", msg->msg[i + 1]); > 1014 snprintf(cmd, sizeof(cmd), "W%c%u*%u*%u*%sDCEC", 1015 port->direction, port->port.port, 1016 cec_msg_initiator(msg), cec_msg_destination(msg), buf); 1017 return extron_send_and_wait(port->extron, port, cmd, NULL); 1018 } 1019 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
