- snprintf(file_name, sizeof(file_name), "/sys/class/tty/%s/device", dev);
- count = readlink(file_name, file_name, sizeof(file_name));
+ snprintf(link_name, sizeof(link_name), "/sys/class/tty/%s/device", dev);
+ count = readlink(link_name, file_name, sizeof(file_name));