From: kernel test robot <lkp@intel.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [abelloni:rtc-next 17/17] drivers/rtc/rtc-cmos.c:776:2: error: call to undeclared function 'acpi_clear_event'; ISO C99 and later do not support implicit function declarations
Date: Tue, 07 Apr 2026 11:51:38 +0800 [thread overview]
Message-ID: <202604040743.432amNeb-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next
head: a33bf4b6adf70aa8c8a18a231ea7aed3fd1b3875
commit: a33bf4b6adf70aa8c8a18a231ea7aed3fd1b3875 [17/17] rtc: cmos: Remove redundant include of linux/acpi.h
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260404/202604040743.432amNeb-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260404/202604040743.432amNeb-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/202604040743.432amNeb-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/rtc/rtc-cmos.c:776:2: error: call to undeclared function 'acpi_clear_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
776 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
>> drivers/rtc/rtc-cmos.c:776:19: error: use of undeclared identifier 'ACPI_EVENT_RTC'
776 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
>> drivers/rtc/rtc-cmos.c:777:2: error: call to undeclared function 'acpi_disable_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
777 | acpi_disable_event(ACPI_EVENT_RTC, 0);
| ^
drivers/rtc/rtc-cmos.c:777:21: error: use of undeclared identifier 'ACPI_EVENT_RTC'
777 | acpi_disable_event(ACPI_EVENT_RTC, 0);
| ^
>> drivers/rtc/rtc-cmos.c:778:9: error: use of undeclared identifier 'ACPI_INTERRUPT_HANDLED'
778 | return ACPI_INTERRUPT_HANDLED;
| ^
>> drivers/rtc/rtc-cmos.c:783:6: error: use of undeclared identifier 'acpi_disabled'; did you mean '__cpu_disable'?
783 | if (acpi_disabled)
| ^~~~~~~~~~~~~
| __cpu_disable
arch/x86/include/asm/smp.h:71:19: note: '__cpu_disable' declared here
71 | static inline int __cpu_disable(void)
| ^
>> drivers/rtc/rtc-cmos.c:786:2: error: call to undeclared function 'acpi_install_fixed_event_handler'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
786 | acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, dev);
| ^
drivers/rtc/rtc-cmos.c:786:35: error: use of undeclared identifier 'ACPI_EVENT_RTC'
786 | acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, dev);
| ^
drivers/rtc/rtc-cmos.c:791:2: error: call to undeclared function 'acpi_clear_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
791 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
drivers/rtc/rtc-cmos.c:791:19: error: use of undeclared identifier 'ACPI_EVENT_RTC'
791 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
drivers/rtc/rtc-cmos.c:792:2: error: call to undeclared function 'acpi_disable_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
792 | acpi_disable_event(ACPI_EVENT_RTC, 0);
| ^
drivers/rtc/rtc-cmos.c:792:21: error: use of undeclared identifier 'ACPI_EVENT_RTC'
792 | acpi_disable_event(ACPI_EVENT_RTC, 0);
| ^
drivers/rtc/rtc-cmos.c:797:6: error: use of undeclared identifier 'acpi_disabled'; did you mean '__cpu_disable'?
797 | if (acpi_disabled)
| ^~~~~~~~~~~~~
| __cpu_disable
arch/x86/include/asm/smp.h:71:19: note: '__cpu_disable' declared here
71 | static inline int __cpu_disable(void)
| ^
>> drivers/rtc/rtc-cmos.c:800:2: error: call to undeclared function 'acpi_remove_fixed_event_handler'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
800 | acpi_remove_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler);
| ^
drivers/rtc/rtc-cmos.c:800:34: error: use of undeclared identifier 'ACPI_EVENT_RTC'
800 | acpi_remove_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler);
| ^
drivers/rtc/rtc-cmos.c:805:2: error: call to undeclared function 'acpi_clear_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
805 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
drivers/rtc/rtc-cmos.c:805:19: error: use of undeclared identifier 'ACPI_EVENT_RTC'
805 | acpi_clear_event(ACPI_EVENT_RTC);
| ^
>> drivers/rtc/rtc-cmos.c:806:2: error: call to undeclared function 'acpi_enable_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
806 | acpi_enable_event(ACPI_EVENT_RTC, 0);
| ^
drivers/rtc/rtc-cmos.c:806:20: error: use of undeclared identifier 'ACPI_EVENT_RTC'
806 | acpi_enable_event(ACPI_EVENT_RTC, 0);
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
vim +/acpi_clear_event +776 drivers/rtc/rtc-cmos.c
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 744
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 745 static u32 rtc_handler(void *context)
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 746 {
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 747 struct device *dev = context;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 748 struct cmos_rtc *cmos = dev_get_drvdata(dev);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 749 unsigned char rtc_control = 0;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 750 unsigned char rtc_intr;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 751 unsigned long flags;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 752
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 753
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 754 /*
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 755 * Always update rtc irq when ACPI is used as RTC Alarm.
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 756 * Or else, ACPI SCI is enabled during suspend/resume only,
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 757 * update rtc irq in that case.
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 758 */
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 759 if (cmos_use_acpi_alarm())
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 760 cmos_interrupt(0, (void *)cmos->rtc);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 761 else {
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 762 /* Fix me: can we use cmos_interrupt() here as well? */
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 763 spin_lock_irqsave(&rtc_lock, flags);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 764 if (cmos_rtc.suspend_ctrl)
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 765 rtc_control = CMOS_READ(RTC_CONTROL);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 766 if (rtc_control & RTC_AIE) {
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 767 cmos_rtc.suspend_ctrl &= ~RTC_AIE;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 768 CMOS_WRITE(rtc_control, RTC_CONTROL);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 769 rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 770 rtc_update_irq(cmos->rtc, 1, rtc_intr);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 771 }
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 772 spin_unlock_irqrestore(&rtc_lock, flags);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 773 }
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 774
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 775 pm_wakeup_hard_event(dev);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @776 acpi_clear_event(ACPI_EVENT_RTC);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @777 acpi_disable_event(ACPI_EVENT_RTC, 0);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @778 return ACPI_INTERRUPT_HANDLED;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 779 }
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 780
d13e9ad9f5146f Rafael J. Wysocki 2022-11-09 781 static void acpi_rtc_event_setup(struct device *dev)
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 782 {
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @783 if (acpi_disabled)
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 784 return;
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 785
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @786 acpi_install_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler, dev);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 787 /*
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 788 * After the RTC handler is installed, the Fixed_RTC event should
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 789 * be disabled. Only when the RTC alarm is set will it be enabled.
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 790 */
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 791 acpi_clear_event(ACPI_EVENT_RTC);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 792 acpi_disable_event(ACPI_EVENT_RTC, 0);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 793 }
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 794
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 795 static void acpi_rtc_event_cleanup(void)
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 796 {
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 797 if (acpi_disabled)
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 798 return;
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 799
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 @800 acpi_remove_fixed_event_handler(ACPI_EVENT_RTC, rtc_handler);
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 801 }
83ebb7b3036d15 Rafael J. Wysocki 2022-11-09 802
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 803 static void rtc_wake_on(struct device *dev)
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 804 {
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 805 acpi_clear_event(ACPI_EVENT_RTC);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 @806 acpi_enable_event(ACPI_EVENT_RTC, 0);
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 807 }
dca4d3b71c8a09 Rafael J. Wysocki 2022-11-09 808
:::::: The code at line 776 was first introduced by commit
:::::: dca4d3b71c8a09a16951add656711fbd6f5bfbb0 rtc: cmos: Eliminate forward declarations of some functions
:::::: TO: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
:::::: CC: Alexandre Belloni <alexandre.belloni@bootlin.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2026-04-07 3:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 3:51 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-04-03 20:23 [abelloni:rtc-next 17/17] drivers/rtc/rtc-cmos.c:776:2: error: call to undeclared function 'acpi_clear_event'; ISO C99 and later do not support implicit function declarations kernel test robot
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