Re: [PATCH v1 6/6] soc: mediatek: virt: geniezone: Add irqfd support

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Hi Yi-De,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on krzk-dt/for-next arm64/for-next/core lwn/docs-next linus/master v6.3-rc6 next-20230412]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230413-170932
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20230413090735.4182-7-yi-de.wu%40mediatek.com
patch subject: [PATCH v1 6/6] soc: mediatek: virt: geniezone: Add irqfd support
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230413/202304132123.rrVq3AEP-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/ae996a1c7d12837f16f28975712a8bf63525cac4
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yi-De-Wu/docs-geniezone-Introduce-GenieZone-hypervisor/20230413-170932
        git checkout ae996a1c7d12837f16f28975712a8bf63525cac4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/soc/mediatek/virt/geniezone/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304132123.rrVq3AEP-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/soc/mediatek/virt/geniezone/gzvm_eventfd.c:463:6: warning: no previous prototype for 'gzvm_irqfd_release' [-Wmissing-prototypes]
     463 | void gzvm_irqfd_release(struct gzvm *gzvm)
         |      ^~~~~~~~~~~~~~~~~~


vim +/gzvm_irqfd_release +463 drivers/soc/mediatek/virt/geniezone/gzvm_eventfd.c

   458	
   459	/*
   460	 * This function is called as the gzvm VM fd is being released. Shutdown all
   461	 * irqfds that still remain open
   462	 */
 > 463	void gzvm_irqfd_release(struct gzvm *gzvm)
   464	{
   465		struct gzvm_kernel_irqfd *irqfd, *tmp;
   466	
   467		spin_lock_irq(&gzvm->irqfds.lock);
   468	
   469		list_for_each_entry_safe(irqfd, tmp, &gzvm->irqfds.items, list)
   470			irqfd_deactivate(irqfd);
   471	
   472		spin_unlock_irq(&gzvm->irqfds.lock);
   473	
   474		/*
   475		 * Block until we know all outstanding shutdown jobs have completed.
   476		 */
   477		flush_workqueue(irqfd_cleanup_wq);
   478	}
   479	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests



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