[xilinx-xlnx:xlnx_rebase_v5.15_LTS 504/1197] drivers/uio/uio_xilinx_ai_engine.c:39:13: warning: variable 'irq' set but not used

From: kernel test robot <lkp@intel.com>
To: Michal Simek <monstr@monstr.eu>
Cc: kbuild-all@lists.01.org, linux-arm-kernel@lists.infradead.org,
	Hyun Kwon <hyun.kwon@xilinx.com>,
	Wendy Liang <wendy.liang@xilinx.com>
Subject: [xilinx-xlnx:xlnx_rebase_v5.15_LTS 504/1197] drivers/uio/uio_xilinx_ai_engine.c:39:13: warning: variable 'irq' set but not used
Date: Sun, 26 Jun 2022 16:59:52 +0800	[thread overview]
Message-ID: <202206261647.mUkf8FqJ-lkp@intel.com> (raw)

Hi Michal,

FYI, the error/warning still remains.

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15_LTS
head:   1e67f149fb5eb4f5eb4e0d4f69194eac6d2497d7
commit: b5ba2242e583191fd0b0c75c614c87ae02a06cf3 [504/1197] uio: Add the UIO driver for AI engine
config: mips-allmodconfig
compiler: mips-linux-gcc (GCC) 11.3.0
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://github.com/Xilinx/linux-xlnx/commit/b5ba2242e583191fd0b0c75c614c87ae02a06cf3
        git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.15_LTS
        git checkout b5ba2242e583191fd0b0c75c614c87ae02a06cf3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/xlnx/ drivers/media/platform/xilinx/ drivers/phy/xilinx/ drivers/staging/ drivers/uio/

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

All warnings (new ones prefixed by >>):

   drivers/uio/uio_xilinx_ai_engine.c: In function 'xilinx_ai_engine_debugfs_write':
>> drivers/uio/uio_xilinx_ai_engine.c:39:13: warning: variable 'irq' set but not used [-Wunused-but-set-variable]
      39 |         int irq, ret;
         |             ^~~

vim +/irq +39 drivers/uio/uio_xilinx_ai_engine.c

    33	
    34	static ssize_t xilinx_ai_engine_debugfs_write(struct file *f,
    35						      const char __user *buf,
    36						      size_t size, loff_t *pos)
    37	{
    38		struct irq_domain *irq_sim_domain = file_inode(f)->i_private;
  > 39		int irq, ret;
    40	
    41		irq = irq_find_mapping(irq_sim_domain, 1);
    42		ret = irq_set_irqchip_state(1, IRQCHIP_STATE_PENDING, true);
    43		if (ret)
    44			return ret;
    45	
    46		return size;
    47	}
    48	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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