[xlnx:master 11884/12154] drivers/uio/uio_xilinx_ai_engine.c:39:6: warning: variable 'irq' set but not used

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

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tree:   https://github.com/Xilinx/linux-xlnx master
head:   bcd80b4c331c5d55de978ab0b2f6181a8aea3434
commit: 15d16835418c3d35e07f215d2934dcf9e6725cc6 [11884/12154] uio: Add the UIO driver for AI engine
config: um-allmodconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/Xilinx/linux-xlnx/commit/15d16835418c3d35e07f215d2934dcf9e6725cc6
        git remote add xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xlnx master
        git checkout 15d16835418c3d35e07f215d2934dcf9e6725cc6
        # save the attached .config to linux build tree
        make W=1 W=1 ARCH=um 

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 >>):

   cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
   drivers/uio/uio_xilinx_ai_engine.c: In function 'xilinx_ai_engine_debugfs_write':
>> drivers/uio/uio_xilinx_ai_engine.c:39:6: warning: variable 'irq' set but not used [-Wunused-but-set-variable]
      39 |  int irq, ret;
         |      ^~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for MFD_CORE
   Depends on HAS_IOMEM
   Selected by
   - MFD_HI6421_SPMI && STAGING && OF && SPMI
   WARNING: unmet direct dependencies detected for UIO_DMEM_GENIRQ
   Depends on UIO && HAS_DMA
   Selected by
   - UIO_XILINX_AI_ENGINE && UIO


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, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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