[rt-devel:linux-6.3.y-rt-rebase 15/47] kernel/printk/printk.c:3341:6: warning: variable 'index' set but not used

[rt-devel:linux-6.3.y-rt-rebase 15/47] kernel/printk/printk.c:3341:6: warning: variable 'index' set but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-6.3.y-rt-rebase
head:   5062011b37fdb8fe4bbef31168bbd956bb32ee7a
commit: 8bc429d558376b052de3bb766a424033d39e443b [15/47] serial: 8250: implement write_atomic
config: x86_64-randconfig-a014-20230313 (https://download.01.org/0day-ci/archive/20230313/202303132042.5MHtZ5kf-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/rt/linux-rt-devel.git/commit/?id=8bc429d558376b052de3bb766a424033d39e443b
        git remote add rt-devel https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
        git fetch --no-tags rt-devel linux-6.3.y-rt-rebase
        git checkout 8bc429d558376b052de3bb766a424033d39e443b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/printk/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303132042.5MHtZ5kf-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/printk/printk.c:3341:6: warning: variable 'index' set but not used [-Wunused-but-set-variable]
           int index = 0;
               ^
   1 warning generated.


vim +/index +3341 kernel/printk/printk.c

f7ffa0536cb17d John Ogness 2022-02-04  3335  
f7ffa0536cb17d John Ogness 2022-02-04  3336  static void atomic_console_flush_all(void)
f7ffa0536cb17d John Ogness 2022-02-04  3337  {
f7ffa0536cb17d John Ogness 2022-02-04  3338  	unsigned long flags;
f7ffa0536cb17d John Ogness 2022-02-04  3339  	struct console *con;
f7ffa0536cb17d John Ogness 2022-02-04  3340  	bool any_progress;
f7ffa0536cb17d John Ogness 2022-02-04 @3341  	int index = 0;
f7ffa0536cb17d John Ogness 2022-02-04  3342  
f7ffa0536cb17d John Ogness 2022-02-04  3343  	if (console_suspended)
f7ffa0536cb17d John Ogness 2022-02-04  3344  		return;
f7ffa0536cb17d John Ogness 2022-02-04  3345  

:::::: The code at line 3341 was first introduced by commit
:::::: f7ffa0536cb17da9589ecda6513bfa0bd1fd1745 printk: add infrastucture for atomic consoles

:::::: TO: John Ogness <john.ogness@linutronix.de>
:::::: CC: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

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