[arnd-playground:to-build 295/350] drivers/usb/typec/tcpm/tcpci_maxim.c:347:14: warning: variable 'irq_return' set but not used

[arnd-playground:to-build 295/350] drivers/usb/typec/tcpm/tcpci_maxim.c:347:14: warning: variable 'irq_return' set but not used

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git to-build
head:   fe197c065a93b860c59017cf6933889c69842ef7
commit: 3cf1a527ce8652b7f2639438b72358b2a3cae38f [295/350] new uninitialized variable warnings
config: nios2-allyesconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
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/arnd/playground.git/commit/?id=3cf1a527ce8652b7f2639438b72358b2a3cae38f
        git remote add arnd-playground https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git
        git fetch --no-tags arnd-playground to-build
        git checkout 3cf1a527ce8652b7f2639438b72358b2a3cae38f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 

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/usb/typec/tcpm/tcpci_maxim.c: In function 'max_tcpci_irq':
>> drivers/usb/typec/tcpm/tcpci_maxim.c:347:14: warning: variable 'irq_return' set but not used [-Wunused-but-set-variable]
     347 |  irqreturn_t irq_return;
         |              ^~~~~~~~~~

vim +/irq_return +347 drivers/usb/typec/tcpm/tcpci_maxim.c

6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  342  
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  343  static irqreturn_t max_tcpci_irq(int irq, void *dev_id)
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  344  {
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  345  	struct max_tcpci_chip *chip = dev_id;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  346  	u16 status;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07 @347  	irqreturn_t irq_return;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  348  	int ret;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  349  
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  350  	if (!chip->port)
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  351  		return IRQ_HANDLED;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  352  
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  353  	ret = max_tcpci_read16(chip, TCPC_ALERT, &status);
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  354  	if (ret < 0) {
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  355  		dev_err(chip->dev, "ALERT read failed\n");
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  356  		return ret;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  357  	}
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  358  	while (status) {
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  359  		irq_return = _max_tcpci_irq(chip, status);
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  360  		/* Do not return if the ALERT is already set. */
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  361  		ret = max_tcpci_read16(chip, TCPC_ALERT, &status);
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  362  		if (ret < 0)
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  363  			break;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  364  	}
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  365  
3cf1a527ce8652b Arnd Bergmann          2020-11-30  366  	return IRQ_HANDLED;
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  367  }
6f413b559f86a28 Badhri Jagan Sridharan 2020-10-07  368  

:::::: The code@line 347 was first introduced by commit
:::::: 6f413b559f86a2894188e082e389ff95ee428345 usb: typec: tcpci_maxim: Chip level TCPC driver

:::::: TO: Badhri Jagan Sridharan <badhri@google.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

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