[android-common:android14-6.1 3/3] arch/arm64/geniezone/../../../drivers/virt/geniezone/gzvm_irqfd.c:303:19: error: implicit declaration of function 'eventfd_ctx_fileget'; did you mean 'eventfd_ctx_fdget'?

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

tree:   https://android.googlesource.com/kernel/common android14-6.1
head:   d6f18f121b7c664094629f6af4d9f43acb7185cc
commit: e73a5222e63e1984554773dbc08317f822216f52 [3/3] FROMLIST: virt: geniezone: Add irqfd support
config: arm64-randconfig-004-20260515 (https://download.01.org/0day-ci/archive/20260515/202605151227.lnwvpRPP-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260515/202605151227.lnwvpRPP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605151227.lnwvpRPP-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   arch/arm64/geniezone/../../../drivers/virt/geniezone/gzvm_irqfd.c: In function 'gzvm_irqfd_assign':
>> arch/arm64/geniezone/../../../drivers/virt/geniezone/gzvm_irqfd.c:303:19: error: implicit declaration of function 'eventfd_ctx_fileget'; did you mean 'eventfd_ctx_fdget'? [-Werror=implicit-function-declaration]
     303 |         eventfd = eventfd_ctx_fileget(f.file);
         |                   ^~~~~~~~~~~~~~~~~~~
         |                   eventfd_ctx_fdget
>> arch/arm64/geniezone/../../../drivers/virt/geniezone/gzvm_irqfd.c:303:17: warning: assignment to 'struct eventfd_ctx *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     303 |         eventfd = eventfd_ctx_fileget(f.file);
         |                 ^
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PHYLINK
   Depends on [n]: NETDEVICES [=n]
   Selected by [y]:
   - GKI_HIDDEN_ETHERNET_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for DRM_MIPI_DSI
   Depends on [n]: HAS_IOMEM [=y] && DRM [=n]
   Selected by [y]:
   - GKI_HIDDEN_DRM_CONFIGS [=y]
   WARNING: unmet direct dependencies detected for CAN_RX_OFFLOAD
   Depends on [n]: NETDEVICES [=n] && CAN_DEV [=n] && CAN_NETLINK [=n]
   Selected by [y]:
   - GKI_HIDDEN_MCP251XFD_CONFIGS [=y]


vim +303 arch/arm64/geniezone/../../../drivers/virt/geniezone/gzvm_irqfd.c

   276	
   277	static int gzvm_irqfd_assign(struct gzvm *gzvm, struct gzvm_irqfd *args)
   278	{
   279		struct gzvm_kernel_irqfd *irqfd, *tmp;
   280		struct fd f;
   281		struct eventfd_ctx *eventfd = NULL, *resamplefd = NULL;
   282		int ret;
   283		__poll_t events;
   284		int idx;
   285	
   286		irqfd = kzalloc(sizeof(*irqfd), GFP_KERNEL_ACCOUNT);
   287		if (!irqfd)
   288			return -ENOMEM;
   289	
   290		irqfd->gzvm = gzvm;
   291		irqfd->gsi = args->gsi;
   292		irqfd->resampler = NULL;
   293	
   294		INIT_LIST_HEAD(&irqfd->list);
   295		INIT_WORK(&irqfd->shutdown, irqfd_shutdown);
   296	
   297		f = fdget(args->fd);
   298		if (!f.file) {
   299			ret = -EBADF;
   300			goto out;
   301		}
   302	
 > 303		eventfd = eventfd_ctx_fileget(f.file);
   304		if (IS_ERR(eventfd)) {
   305			ret = PTR_ERR(eventfd);
   306			goto fail;
   307		}
   308	
   309		irqfd->eventfd = eventfd;
   310	
   311		if (args->flags & GZVM_IRQFD_FLAG_RESAMPLE) {
   312			struct gzvm_kernel_irqfd_resampler *resampler;
   313	
   314			resamplefd = eventfd_ctx_fdget(args->resamplefd);
   315			if (IS_ERR(resamplefd)) {
   316				ret = PTR_ERR(resamplefd);
   317				goto fail;
   318			}
   319	
   320			irqfd->resamplefd = resamplefd;
   321			INIT_LIST_HEAD(&irqfd->resampler_link);
   322	
   323			mutex_lock(&gzvm->irqfds.resampler_lock);
   324	
   325			list_for_each_entry(resampler,
   326					    &gzvm->irqfds.resampler_list, link) {
   327				if (resampler->notifier.gsi == irqfd->gsi) {
   328					irqfd->resampler = resampler;
   329					break;
   330				}
   331			}
   332	
   333			if (!irqfd->resampler) {
   334				resampler = kzalloc(sizeof(*resampler),
   335						    GFP_KERNEL_ACCOUNT);
   336				if (!resampler) {
   337					ret = -ENOMEM;
   338					mutex_unlock(&gzvm->irqfds.resampler_lock);
   339					goto fail;
   340				}
   341	
   342				resampler->gzvm = gzvm;
   343				INIT_LIST_HEAD(&resampler->list);
   344				resampler->notifier.gsi = irqfd->gsi;
   345				resampler->notifier.irq_acked = irqfd_resampler_ack;
   346				INIT_LIST_HEAD(&resampler->link);
   347	
   348				list_add(&resampler->link, &gzvm->irqfds.resampler_list);
   349				gzvm_register_irq_ack_notifier(gzvm,
   350							       &resampler->notifier);
   351				irqfd->resampler = resampler;
   352			}
   353	
   354			list_add_rcu(&irqfd->resampler_link, &irqfd->resampler->list);
   355			synchronize_srcu(&gzvm->irq_srcu);
   356	
   357			mutex_unlock(&gzvm->irqfds.resampler_lock);
   358		}
   359	
   360		/*
   361		 * Install our own custom wake-up handling so we are notified via
   362		 * a callback whenever someone signals the underlying eventfd
   363		 */
   364		init_waitqueue_func_entry(&irqfd->wait, irqfd_wakeup);
   365		init_poll_funcptr(&irqfd->pt, irqfd_ptable_queue_proc);
   366	
   367		spin_lock_irq(&gzvm->irqfds.lock);
   368	
   369		ret = 0;
   370		list_for_each_entry(tmp, &gzvm->irqfds.items, list) {
   371			if (irqfd->eventfd != tmp->eventfd)
   372				continue;
   373			/* This fd is used for another irq already. */
   374			pr_err("already used: gsi=%d fd=%d\n", args->gsi, args->fd);
   375			ret = -EBUSY;
   376			spin_unlock_irq(&gzvm->irqfds.lock);
   377			goto fail;
   378		}
   379	
   380		idx = srcu_read_lock(&gzvm->irq_srcu);
   381	
   382		list_add_tail(&irqfd->list, &gzvm->irqfds.items);
   383	
   384		spin_unlock_irq(&gzvm->irqfds.lock);
   385	
   386		/*
   387		 * Check if there was an event already pending on the eventfd
   388		 * before we registered, and trigger it as if we didn't miss it.
   389		 */
   390		events = vfs_poll(f.file, &irqfd->pt);
   391	
   392		/* In case there is already a pending event */
   393		if (events & EPOLLIN)
   394			irqfd_set_spi(gzvm, GZVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,
   395				      irqfd->gsi, 1, false);
   396	
   397		srcu_read_unlock(&gzvm->irq_srcu, idx);
   398	
   399		/*
   400		 * do not drop the file until the irqfd is fully initialized, otherwise
   401		 * we might race against the EPOLLHUP
   402		 */
   403		fdput(f);
   404		return 0;
   405	
   406	fail:
   407		if (irqfd->resampler)
   408			irqfd_resampler_shutdown(irqfd);
   409	
   410		if (resamplefd && !IS_ERR(resamplefd))
   411			eventfd_ctx_put(resamplefd);
   412	
   413		if (eventfd && !IS_ERR(eventfd))
   414			eventfd_ctx_put(eventfd);
   415	
   416		fdput(f);
   417	
   418	out:
   419		kfree(irqfd);
   420		return ret;
   421	}
   422	

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https://github.com/intel/lkp-tests/wiki