tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: a81d020c58c2c6a55ebaf15846470a9ecb69bd1a commit: 1ce24a39db64afc5041e3a32893f3e5f1f5d4b9d [1294/1294] rtc: add rtc drivers for Phytium SOCs config: arm64-randconfig-002-20241114 (https://download.01.org/0day-ci/archive/20241114/202411140519.n2BlgtJC-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241114/202411140519.n2BlgtJC-lkp@i...) 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/202411140519.n2BlgtJC-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_read_time': drivers/rtc/rtc-phytium.c:65:23: warning: variable 'tmp' set but not used [-Wunused-but-set-variable] 65 | unsigned long tmp = 0; | ^~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_set_mmss': drivers/rtc/rtc-phytium.c:85:23: warning: variable 'tmp' set but not used [-Wunused-but-set-variable] 85 | unsigned long tmp = 0; | ^~~ drivers/rtc/rtc-phytium.c:84:23: warning: variable 'counter' set but not used [-Wunused-but-set-variable] 84 | unsigned long counter = 0; | ^~~~~~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_set_alarm': drivers/rtc/rtc-phytium.c:139:23: warning: variable 'rtc_time' set but not used [-Wunused-but-set-variable] 139 | unsigned long rtc_time; | ^~~~~~~~ drivers/rtc/rtc-phytium.c: At top level:

...

drivers/rtc/rtc-phytium.c:129:12: warning: 'phytium_rtc_alarm_irq_enabled' defined but not used [-Wunused-function] 129 | static int phytium_rtc_alarm_irq_enabled(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/arm64/include/asm/atomic.h:34, from include/linux/atomic.h:7, from include/asm-generic/bitops/atomic.h:5, from arch/arm64/include/asm/bitops.h:37, from include/linux/bitops.h:20, from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/module.h:10, from drivers/rtc/rtc-phytium.c:18: In function '__cmpxchg_case_acq_4', inlined from '__cmpxchg_acq' at arch/arm64/include/asm/cmpxchg.h:141:1, inlined from 'queued_spin_lock' at include/asm-generic/qspinlock.h:85:8, inlined from 'do_raw_spin_lock' at include/linux/spinlock.h:180:2, inlined from '__raw_spin_lock' at include/linux/spinlock_api_smp.h:143:2, inlined from 'spin_lock' at include/linux/spinlock.h:329:2, inlined from 'phytium_rtc_set_mmss' at drivers/rtc/rtc-phytium.c:87:2: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'spinlock_t[1]' {aka 'struct spinlock[1]'} [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:515:1: note: in expansion of macro '__CMPXCHG_CASE' 515 | __CMPXCHG_CASE(w, , acq_4, a, "memory") | ^~~~~~~~~~~~~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_set_mmss': drivers/rtc/rtc-phytium.c:48:12: note: object 'spinlock_phytium_rtc' of size 4 48 | spinlock_t spinlock_phytium_rtc; | ^~~~~~~~~~~~~~~~~~~~ In function '__cmpxchg_case_acq_4', inlined from '__cmpxchg_acq' at arch/arm64/include/asm/cmpxchg.h:141:1, inlined from 'queued_spin_lock' at include/asm-generic/qspinlock.h:85:8, inlined from 'do_raw_spin_lock' at include/linux/spinlock.h:180:2, inlined from '__raw_spin_lock' at include/linux/spinlock_api_smp.h:143:2, inlined from 'spin_lock' at include/linux/spinlock.h:329:2, inlined from 'phytium_rtc_set_mmss' at drivers/rtc/rtc-phytium.c:87:2: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'spinlock_t[1]' {aka 'struct spinlock[1]'} [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:515:1: note: in expansion of macro '__CMPXCHG_CASE' 515 | __CMPXCHG_CASE(w, , acq_4, a, "memory") | ^~~~~~~~~~~~~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_set_mmss': drivers/rtc/rtc-phytium.c:48:12: note: object 'spinlock_phytium_rtc' of size 4 48 | spinlock_t spinlock_phytium_rtc; | ^~~~~~~~~~~~~~~~~~~~ In function '__cmpxchg_case_acq_4', inlined from '__cmpxchg_acq' at arch/arm64/include/asm/cmpxchg.h:141:1, inlined from 'queued_spin_lock' at include/asm-generic/qspinlock.h:85:8, inlined from 'do_raw_spin_lock' at include/linux/spinlock.h:180:2, inlined from '__raw_spin_lock' at include/linux/spinlock_api_smp.h:143:2, inlined from 'spin_lock' at include/linux/spinlock.h:329:2, inlined from 'phytium_rtc_read_time' at drivers/rtc/rtc-phytium.c:67:2: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'spinlock_t[1]' {aka 'struct spinlock[1]'} [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:515:1: note: in expansion of macro '__CMPXCHG_CASE' 515 | __CMPXCHG_CASE(w, , acq_4, a, "memory") | ^~~~~~~~~~~~~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_read_time': drivers/rtc/rtc-phytium.c:48:12: note: object 'spinlock_phytium_rtc' of size 4 48 | spinlock_t spinlock_phytium_rtc; | ^~~~~~~~~~~~~~~~~~~~ In function '__cmpxchg_case_acq_4', inlined from '__cmpxchg_acq' at arch/arm64/include/asm/cmpxchg.h:141:1, inlined from 'queued_spin_lock' at include/asm-generic/qspinlock.h:85:8, inlined from 'do_raw_spin_lock' at include/linux/spinlock.h:180:2, inlined from '__raw_spin_lock' at include/linux/spinlock_api_smp.h:143:2, inlined from 'spin_lock' at include/linux/spinlock.h:329:2, inlined from 'phytium_rtc_read_time' at drivers/rtc/rtc-phytium.c:67:2: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'spinlock_t[1]' {aka 'struct spinlock[1]'} [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:515:1: note: in expansion of macro '__CMPXCHG_CASE' 515 | __CMPXCHG_CASE(w, , acq_4, a, "memory") | ^~~~~~~~~~~~~~ drivers/rtc/rtc-phytium.c: In function 'phytium_rtc_read_time': drivers/rtc/rtc-phytium.c:48:12: note: object 'spinlock_phytium_rtc' of size 4 48 | spinlock_t spinlock_phytium_rtc; | ^~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HARDLOCKUP_DETECTOR Depends on [n]: DEBUG_KERNEL [=n] && !S390 && (HAVE_HARDLOCKUP_DETECTOR_PERF [=n] || HAVE_HARDLOCKUP_DETECTOR_ARCH [=y]) Selected by [y]: - SDEI_WATCHDOG [=y] && <choice> && ARM_SDE_INTERFACE [=y] && !HARDLOCKUP_CHECK_TIMESTAMP [=n] vim +/phytium_rtc_alarm_irq_enabled +129 drivers/rtc/rtc-phytium.c 128

129 static int phytium_rtc_alarm_irq_enabled(struct device *dev) 130 { 131 struct phytium_rtc_dev *pdata = dev_get_drvdata(dev); 132 133 return readl(pdata->csr_base + RTC_CCR) & RTC_CCR_IE ? 1 : 0; 134 } 135

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