linux-kernel - [jirislaby:devel 19/62] include/linux/tty_flip.h:43:34: warning: 'struct tty_ldisc' declared inside parameter list will not be visible outside of this definition or declaration

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Date:   Fri, 23 Jul 2021 00:51:40 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jirislaby:devel 19/62] include/linux/tty_flip.h:43:34: warning:
 'struct tty_ldisc' declared inside parameter list will not be visible
 outside of this definition or declaration

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head:   bc9f741e3e9e4828b7bb963e951a24ec7680346c
commit: bc13da86df7a60169f8d5e3eca49681bb19f3164 [19/62] tty: tty_flip.h needs only tty_buffer and tty_port
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 10.3.0
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/commit/?id=bc13da86df7a60169f8d5e3eca49681bb19f3164
        git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
        git fetch --no-tags jirislaby devel
        git checkout bc13da86df7a60169f8d5e3eca49681bb19f3164
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash drivers/tty/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/tty/amiserial.c:59:
>> include/linux/tty_flip.h:43:34: warning: 'struct tty_ldisc' declared inside parameter list will not be visible outside of this definition or declaration
      43 | int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
         |                                  ^~~~~~~~~


vim +43 include/linux/tty_flip.h

2832fc11f13606 Alan Cox   2010-02-18  42  
d4b7b6837b4e64 Jiri Slaby 2021-06-19 @43  int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
d4b7b6837b4e64 Jiri Slaby 2021-06-19  44  		const char *f, int count);
d4b7b6837b4e64 Jiri Slaby 2021-06-19  45  

:::::: The code at line 43 was first introduced by commit
:::::: d4b7b6837b4e648d33d3fa355202d03b2a7e415d tty: move tty_ldisc_receive_buf to tty_flip.h

:::::: TO: Jiri Slaby <jslaby@...e.cz>
:::::: CC: Jiri Slaby <jslaby@...e.cz>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (60777 bytes)