linux-kernel - Re: [PATCH 1/2] tty: new helper function tty_get

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Date:   Tue, 14 Feb 2023 03:25:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Florian Eckert <fe@....tdt.de>, u.kleine-koenig@...gutronix.de,
        gregkh@...uxfoundation.org, jirislaby@...nel.org, pavel@....cz,
        lee@...nel.org
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org, Eckert.Florian@...glemail.com
Subject: Re: [PATCH 1/2] tty: new helper function tty_get_mget

Hi Florian,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tty/tty-testing]
[also build test WARNING on tty/tty-next tty/tty-linus pavel-leds/for-next staging/staging-testing staging/staging-next staging/staging-linus linus/master v6.2-rc8 next-20230213]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Florian-Eckert/tty-new-helper-function-tty_get_mget/20230213-223413
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20230213140638.620206-2-fe%40dev.tdt.de
patch subject: [PATCH 1/2] tty: new helper function tty_get_mget
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230214/202302140320.YmmWP6V8-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
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://github.com/intel-lab-lkp/linux/commit/096ca9c9428ec2a8ebab4af0798461e66585cdde
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Florian-Eckert/tty-new-helper-function-tty_get_mget/20230213-223413
        git checkout 096ca9c9428ec2a8ebab4af0798461e66585cdde
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/leds/trigger/ drivers/tty/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302140320.YmmWP6V8-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/tty/tty_io.c:76:
   include/linux/tty.h:423:17: error: expected ';', ',' or ')' before 'struct'
     423 |                 struct serial_icounter_struct *icount);
         |                 ^~~~~~
>> drivers/tty/tty_io.c:2589:5: warning: no previous prototype for 'tty_get_icount' [-Wmissing-prototypes]
    2589 | int tty_get_icount(struct tty_struct *tty,
         |     ^~~~~~~~~~~~~~


vim +/tty_get_icount +2589 drivers/tty/tty_io.c

^1da177e4c3f41 drivers/char/tty_io.c Linus Torvalds   2005-04-16  2579  
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2580  /**
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2581   * tty_get_icount	-	get tty statistics
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2582   * @tty: tty device
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2583   * @icount: output parameter
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2584   *
796a75a98762f1 drivers/tty/tty_io.c  Jiri Slaby       2021-11-26  2585   * Gets a copy of the @tty's icount statistics.
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2586   *
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2587   * Locking: none (up to the driver)
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2588   */
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18 @2589  int tty_get_icount(struct tty_struct *tty,
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2590  		   struct serial_icounter_struct *icount)
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2591  {
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2592  	memset(icount, 0, sizeof(*icount));
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2593  
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2594  	if (tty->ops->get_icount)
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2595  		return tty->ops->get_icount(tty, icount);
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2596  	else
1b8b20868a6d64 drivers/tty/tty_io.c  Johan Hovold     2021-04-07  2597  		return -ENOTTY;
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2598  }
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2599  EXPORT_SYMBOL_GPL(tty_get_icount);
d20c219c731784 drivers/tty/tty_io.c  Uwe Kleine-König 2020-12-18  2600  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests