tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: 6166e1ec07e0a856bfca48f27886bc1868e3fd3f commit: b7b354583b26f640dae6e9d138ace1d94e218217 [87/125] amiserial: pack and sort includes config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commi... git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git git fetch --no-tags jirislaby devel git checkout b7b354583b26f640dae6e9d138ace1d94e218217 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from drivers/tty/amiserial.c:59: 5 | extern int tty_buffer_set_limit(struct tty_port *port, int limit); | ^~~~~~~~ include/linux/tty_flip.h:6:51: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 6 | extern unsigned int tty_buffer_space_avail(struct tty_port *port); | ^~~~~~~~ include/linux/tty_flip.h:7:43: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 7 | extern int tty_buffer_request_room(struct tty_port *port, size_t size); | ^~~~~~~~ include/linux/tty_flip.h:8:48: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 8 | extern int tty_insert_flip_string_flags(struct tty_port *port, | ^~~~~~~~ include/linux/tty_flip.h:10:53: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 10 | extern int tty_insert_flip_string_fixed_flag(struct tty_port *port, | ^~~~~~~~ include/linux/tty_flip.h:12:43: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 12 | extern int tty_prepare_flip_string(struct tty_port *port, | ^~~~~~~~ include/linux/tty_flip.h:14:41: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 14 | extern void tty_flip_buffer_push(struct tty_port *port); | ^~~~~~~~ include/linux/tty_flip.h:15:31: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 15 | void tty_schedule_flip(struct tty_port *port); | ^~~~~~~~ include/linux/tty_flip.h:16:35: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 16 | int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag); | ^~~~~~~~ include/linux/tty_flip.h:18:47: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 18 | static inline int tty_insert_flip_char(struct tty_port *port, | ^~~~~~~~ include/linux/tty_flip.h: In function 'tty_insert_flip_char': 21 | struct tty_buffer *tb = port->buf.tail; | ^~ 24 | change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); | ^~ 24 | change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); | ^~~~~~~~~~~ | TASK_NORMAL include/linux/tty_flip.h:24:24: note: each undeclared identifier is reported only once for each function it appears in 24 | change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); | ^~~~~~~~~~ | TASK_NORMAL 27 | *flag_buf_ptr(tb, tb->used) = flag; | ^~~~~~~~~~~~ 28 | *char_buf_ptr(tb, tb->used++) = ch; | ^~~~~~~~~~~~ 31 | return __tty_insert_flip_char(port, ch, flag); | ^~~~ | | | struct tty_port * include/linux/tty_flip.h:16:45: note: expected 'struct tty_port *' but argument is of type 'struct tty_port *' 16 | int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag); | ~~~~~~~~~~~~~~~~~^~~~ include/linux/tty_flip.h: At top level: include/linux/tty_flip.h:34:49: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 34 | static inline int tty_insert_flip_string(struct tty_port *port, | ^~~~~~~~ include/linux/tty_flip.h: In function 'tty_insert_flip_string': include/linux/tty_flip.h:37:56: error: 'TTY_NORMAL' undeclared (first use in this function); did you mean 'TASK_NORMAL'? 37 | return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); | ^~~~~~~~~~ | TASK_NORMAL 37 | return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); | ^~~~ | | | struct tty_port * include/linux/tty_flip.h:10:63: note: expected 'struct tty_port *' but argument is of type 'struct tty_port *' 10 | extern int tty_insert_flip_string_fixed_flag(struct tty_port *port, | ~~~~~~~~~~~~~~~~~^~~~ include/linux/tty_flip.h: At top level: include/linux/tty_flip.h:40:46: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 40 | extern void tty_buffer_lock_exclusive(struct tty_port *port); | ^~~~~~~~ include/linux/tty_flip.h:41:48: warning: 'struct tty_port' declared inside parameter list will not be visible outside of this definition or declaration 41 | extern void tty_buffer_unlock_exclusive(struct tty_port *port); | ^~~~~~~~ In file included from drivers/tty/amiserial.c:60: 51 | static inline unsigned char *char_buf_ptr(struct tty_buffer *b, int ofs) | ^~~~~~~~~~~~ In file included from drivers/tty/amiserial.c:59: include/linux/tty_flip.h:28:4: note: previous implicit declaration of 'char_buf_ptr' was here 28 | *char_buf_ptr(tb, tb->used++) = ch; | ^~~~~~~~~~~~ In file included from drivers/tty/amiserial.c:60: 56 | static inline char *flag_buf_ptr(struct tty_buffer *b, int ofs) | ^~~~~~~~~~~~ In file included from drivers/tty/amiserial.c:59: include/linux/tty_flip.h:27:5: note: previous implicit declaration of 'flag_buf_ptr' was here 27 | *flag_buf_ptr(tb, tb->used) = flag; | ^~~~~~~~~~~~ drivers/tty/amiserial.c: In function 'receive_chars': 258 | tty_insert_flip_char(&info->tport, ch, flag); | ^~~~~~~~~~~~ | | | struct tty_port * In file included from drivers/tty/amiserial.c:59: include/linux/tty_flip.h:18:57: note: expected 'struct tty_port *' but argument is of type 'struct tty_port *' 18 | static inline int tty_insert_flip_char(struct tty_port *port, | ~~~~~~~~~~~~~~~~~^~~~ drivers/tty/amiserial.c:260:24: error: passing argument 1 of 'tty_insert_flip_char' from incompatible pointer type [-Werror=incompatible-pointer-types] 260 | tty_insert_flip_char(&info->tport, 0, TTY_OVERRUN); | ^~~~~~~~~~~~ | | | struct tty_port * In file included from drivers/tty/amiserial.c:59: include/linux/tty_flip.h:18:57: note: expected 'struct tty_port *' but argument is of type 'struct tty_port *' 18 | static inline int tty_insert_flip_char(struct tty_port *port, | ~~~~~~~~~~~~~~~~~^~~~ 261 | tty_flip_buffer_push(&info->tport); | ^~~~~~~~~~~~ | | | struct tty_port * In file included from drivers/tty/amiserial.c:59: include/linux/tty_flip.h:14:51: note: expected 'struct tty_port *' but argument is of type 'struct tty_port *' 14 | extern void tty_flip_buffer_push(struct tty_port *port); | ~~~~~~~~~~~~~~~~~^~~~ drivers/tty/amiserial.c: In function 'shutdown': drivers/tty/amiserial.c:522:23: warning: variable 'state' set but not used [-Wunused-but-set-variable] 522 | struct serial_state *state; | ^~~~~ cc1: some warnings being treated as errors vim +21 include/linux/tty_flip.h ^1da177e4c3f41 Linus Torvalds 2005-04-16 4 4d18e6eff81e1d Peter Hurley 2013-11-22 @5 extern int tty_buffer_set_limit(struct tty_port *port, int limit); 9a33fbf9d23034 Jiri Slaby 2021-05-05 6 extern unsigned int tty_buffer_space_avail(struct tty_port *port); 227434f8986c38 Jiri Slaby 2013-01-03 7 extern int tty_buffer_request_room(struct tty_port *port, size_t size); 2f69335710884a Jiri Slaby 2013-01-03 8 extern int tty_insert_flip_string_flags(struct tty_port *port, 2f69335710884a Jiri Slaby 2013-01-03 9 const unsigned char *chars, const char *flags, size_t size); 2f69335710884a Jiri Slaby 2013-01-03 10 extern int tty_insert_flip_string_fixed_flag(struct tty_port *port, 2f69335710884a Jiri Slaby 2013-01-03 11 const unsigned char *chars, char flag, size_t size); 2f69335710884a Jiri Slaby 2013-01-03 12 extern int tty_prepare_flip_string(struct tty_port *port, 2f69335710884a Jiri Slaby 2013-01-03 13 unsigned char **chars, size_t size); 2e124b4a390ca8 Jiri Slaby 2013-01-03 14 extern void tty_flip_buffer_push(struct tty_port *port); 6732c8bb8671ac Jiri Slaby 2013-01-03 15 void tty_schedule_flip(struct tty_port *port); 979990c6284814 Arnd Bergmann 2017-06-20 16 int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag); 33f0f88f1c51ae Alan Cox 2006-01-09 17 92a19f9cec9a80 Jiri Slaby 2013-01-03 18 static inline int tty_insert_flip_char(struct tty_port *port, ^1da177e4c3f41 Linus Torvalds 2005-04-16 19 unsigned char ch, char flag) ^1da177e4c3f41 Linus Torvalds 2005-04-16 20 { 92a19f9cec9a80 Jiri Slaby 2013-01-03 @21 struct tty_buffer *tb = port->buf.tail; acc0f67f307f52 Peter Hurley 2013-12-09 22 int change; acc0f67f307f52 Peter Hurley 2013-12-09 23 acc0f67f307f52 Peter Hurley 2013-12-09 @24 change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); acc0f67f307f52 Peter Hurley 2013-12-09 25 if (!change && tb->used < tb->size) { acc0f67f307f52 Peter Hurley 2013-12-09 26 if (~tb->flags & TTYB_NORMAL) 1fc359fc3ea723 Peter Hurley 2013-06-15 @27 *flag_buf_ptr(tb, tb->used) = flag; 1fc359fc3ea723 Peter Hurley 2013-06-15 @28 *char_buf_ptr(tb, tb->used++) = ch; 33f0f88f1c51ae Alan Cox 2006-01-09 29 return 1; ^1da177e4c3f41 Linus Torvalds 2005-04-16 30 } 979990c6284814 Arnd Bergmann 2017-06-20 @31 return __tty_insert_flip_char(port, ch, flag); ^1da177e4c3f41 Linus Torvalds 2005-04-16 32 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 33 05c7cd39907184 Jiri Slaby 2013-01-03 34 static inline int tty_insert_flip_string(struct tty_port *port, 05c7cd39907184 Jiri Slaby 2013-01-03 35 const unsigned char *chars, size_t size) 2832fc11f13606 Alan Cox 2010-02-18 36 { 05c7cd39907184 Jiri Slaby 2013-01-03 @37 return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); 2832fc11f13606 Alan Cox 2010-02-18 38 } 2832fc11f13606 Alan Cox 2010-02-18 39 :::::: The code at line 21 was first introduced by commit :::::: 92a19f9cec9a80ad93c06e115822deb729e2c6ad TTY: switch tty_insert_flip_char :::::: TO: Jiri Slaby <jslaby(a)suse.cz&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org