[jirislaby:devel 53/90] drivers/tty/serial/serial_core.c:1087:6: warning: unused variable 'result'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head:   ddc23bf3036b252a58a07fbcf74b3a0a6cb3582d
commit: 555da4e8dcbc70496db3e4cf4c9e15ab0e1a2bd2 [53/90] serial_core: use GUARDs
config: arm-randconfig-002-20250610 (https://download.01.org/0day-ci/archive/20250610/202506101035.cEBHA2Ng-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250610/202506101035.cEBHA2Ng-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506101035.cEBHA2Ng-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/tty/serial/serial_core.c: In function 'uart_tiocmget':
>> drivers/tty/serial/serial_core.c:1087:6: warning: unused variable 'result' [-Wunused-variable]
     int result;
         ^~~~~~


vim +/result +1087 drivers/tty/serial/serial_core.c

^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1081  
60b33c133ca0b7 drivers/tty/serial/serial_core.c Alan Cox          2011-02-14  1082  static int uart_tiocmget(struct tty_struct *tty)
^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1083  {
^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1084  	struct uart_state *state = tty->driver_data;
a2bceae065ed8c drivers/serial/serial_core.c     Alan Cox          2009-09-19  1085  	struct tty_port *port = &state->port;
4047b37122d1be drivers/tty/serial/serial_core.c Peter Hurley      2016-04-09  1086  	struct uart_port *uport;
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08 @1087) 	int result;
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08  1088) 
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08  1089) 	guard(mutex)(&port->mutex);
^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1090  
4047b37122d1be drivers/tty/serial/serial_core.c Peter Hurley      2016-04-09  1091  	uport = uart_port_check(state);
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08  1092) 	if (!uport || tty_io_error(tty))
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08  1093) 		return -EIO;
4047b37122d1be drivers/tty/serial/serial_core.c Peter Hurley      2016-04-09  1094  
555da4e8dcbc70 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2025-04-15  1095) 	guard(uart_port_lock_irq)(uport);
5879adbff5aad0 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2024-08-08  1096) 
555da4e8dcbc70 drivers/tty/serial/serial_core.c Jiri Slaby (SUSE  2025-04-15  1097) 	return uport->mctrl | uport->ops->get_mctrl(uport);
^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1098  }
^1da177e4c3f41 drivers/serial/serial_core.c     Linus Torvalds    2005-04-16  1099  

:::::: The code at line 1087 was first introduced by commit
:::::: 5879adbff5aad0436298db006a922dd576339c7f serial: use guards for simple mutex locks

:::::: TO: Jiri Slaby (SUSE) <jirislaby@kernel.org>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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