Hi Alexey,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linux/master]
[also build test ERROR on linus/master v5.10-rc5 next-20201123]
[cannot apply to tip/irq/core tip/x86/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Alexey-Kardashevskiy/genirq-irqdomain-Add-reference-counting-to-IRQs/20201124-142727
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 09162bc32c880a791c6c0668ce0745cf7958f576
config: alpha-randconfig-r013-20201124 (attached as .config)
compiler: alpha-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://github.com/0day-ci/linux/commit/50199be6fbdf9f1f27ff037a6bd6c602e57f7a5f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alexey-Kardashevskiy/genirq-irqdomain-Add-reference-counting-to-IRQs/20201124-142727
        git checkout 50199be6fbdf9f1f27ff037a6bd6c602e57f7a5f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha 

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

All errors (new ones prefixed by >>):

   kernel/irq/irqdomain.c: In function 'irq_dispose_mapping':
>> kernel/irq/irqdomain.c:868:19: error: 'struct irq_desc' has no member named 'kobj'
     868 |  kobject_put(&desc->kobj);
         |                   ^~
   kernel/irq/irqdomain.c: In function 'irq_domain_free_irqs':
   kernel/irq/irqdomain.c:1685:20: error: 'struct irq_desc' has no member named 'kobj'
    1685 |   kobject_put(&desc->kobj);
         |                    ^~
   kernel/irq/irqdomain.c: At top level:
   kernel/irq/irqdomain.c:1907:13: warning: no previous prototype for 'irq_domain_debugfs_init' [-Wmissing-prototypes]
    1907 | void __init irq_domain_debugfs_init(struct dentry *root)
         |             ^~~~~~~~~~~~~~~~~~~~~~~

vim +868 kernel/irq/irqdomain.c

   859	
   860	/**
   861	 * irq_dispose_mapping() - Unmap an interrupt
   862	 * @virq: linux irq number of the interrupt to unmap
   863	 */
   864	void irq_dispose_mapping(unsigned int virq)
   865	{
   866		struct irq_desc *desc = irq_to_desc(virq);
   867	
 > 868		kobject_put(&desc->kobj);
   869	}
   870	EXPORT_SYMBOL_GPL(irq_dispose_mapping);
   871	

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