[rt-devel:linux-6.3.y-rt-rebase 15/47] kernel/printk/printk.c:3341:13: warning: variable 'index' set but not used

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-6.3.y-rt-rebase
head:   c0ca8b79d21d0c9a1ac7ed0ebebb5588804ba825
commit: 8bc429d558376b052de3bb766a424033d39e443b [15/47] serial: 8250: implement write_atomic
config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20230310/202303100327.IbeLrGlf-lkp@intel.com/config)
compiler: loongarch64-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://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=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch 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/202303100327.IbeLrGlf-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/printk/printk.c: In function 'atomic_console_flush_all':
>> kernel/printk/printk.c:3341:13: warning: variable 'index' set but not used [-Wunused-but-set-variable]
    3341 |         int index = 0;
         |             ^~~~~


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

f7ffa0536cb17da John Ogness 2022-02-04  3335  
f7ffa0536cb17da John Ogness 2022-02-04  3336  static void atomic_console_flush_all(void)
f7ffa0536cb17da John Ogness 2022-02-04  3337  {
f7ffa0536cb17da John Ogness 2022-02-04  3338  	unsigned long flags;
f7ffa0536cb17da John Ogness 2022-02-04  3339  	struct console *con;
f7ffa0536cb17da John Ogness 2022-02-04  3340  	bool any_progress;
f7ffa0536cb17da John Ogness 2022-02-04 @3341  	int index = 0;
f7ffa0536cb17da John Ogness 2022-02-04  3342  
f7ffa0536cb17da John Ogness 2022-02-04  3343  	if (console_suspended)
f7ffa0536cb17da John Ogness 2022-02-04  3344  		return;
f7ffa0536cb17da 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