[android-common:android-4.19-stable 15288/23012] drivers/tty/serial/msm_geni_serial_console.c:479:6: warning: variable 'rx_stale' set but not used

[android-common:android-4.19-stable 15288/23012] drivers/tty/serial/msm_geni_serial_console.c:479:6: warning: variable 'rx_stale' set but not used

[kernel test robot]

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tree:   https://android.googlesource.com/kernel/common android-4.19-stable
head:   e6f64a043b8f2947387b0b24daabfe716d4b1ee3
commit: 3b328707cf5e600683b13c9b19de3a3f22ea81e0 [15288/23012] ANDROID: serial: msm_geni_serial_console : Add Earlycon support
config: i386-allyesconfig (attached as .config)
compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
reproduce (this is a W=1 build):
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-4.19-stable
        git checkout 3b328707cf5e600683b13c9b19de3a3f22ea81e0
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   drivers/tty/serial/msm_geni_serial_console.c: In function 'msm_geni_serial_earlycon_setup':
>> drivers/tty/serial/msm_geni_serial_console.c:479:6: warning: variable 'rx_stale' set but not used [-Wunused-but-set-variable]
     479 |  u32 rx_stale = 0;
         |      ^~~~~~~~
>> drivers/tty/serial/msm_geni_serial_console.c:477:6: warning: variable 'rx_parity_cfg' set but not used [-Wunused-but-set-variable]
     477 |  u32 rx_parity_cfg = 0;
         |      ^~~~~~~~~~~~~
>> drivers/tty/serial/msm_geni_serial_console.c:476:6: warning: variable 'rx_trans_cfg' set but not used [-Wunused-but-set-variable]
     476 |  u32 rx_trans_cfg = 0;
         |      ^~~~~~~~~~~~


vim +/rx_stale +479 drivers/tty/serial/msm_geni_serial_console.c

   467	
   468	static int __init
   469	msm_geni_serial_earlycon_setup(struct earlycon_device *dev,
   470			const char *opt)
   471	{
   472		struct uart_port *uport = &dev->port;
   473		int ret = 0;
   474		u32 tx_trans_cfg = 0;
   475		u32 tx_parity_cfg = 0;
 > 476		u32 rx_trans_cfg = 0;
 > 477		u32 rx_parity_cfg = 0;
   478		u32 stop_bit = 0;
 > 479		u32 rx_stale = 0;

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

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