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Date: Sun, 26 Dec 2021 15:57:05 +0800
From: kernel test robot <lkp@...el.com>
To: Paul Cercueil <paul@...pouillou.net>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: drivers/irqchip/irq-bcm7038-l1.c:89:28: warning: unused function
'reg_mask_status'
Hi Paul,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 438645193e59e91761ccb3fa55f6ce70b615ff93
commit: c434b9f80b0923e6460031b0fd964f8b0bf3c6a6 MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbol
date: 1 year, 3 months ago
config: mips-randconfig-c004-20211226 (https://download.01.org/0day-ci/archive/20211226/202112261532.AJEnMzCL-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 0c553cc1af2e4c14100df6cf4a6fc91987e778e6)
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
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c434b9f80b0923e6460031b0fd964f8b0bf3c6a6
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout c434b9f80b0923e6460031b0fd964f8b0bf3c6a6
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash block/ drivers/irqchip/ drivers/scsi/ufs/ kernel/time/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/irqchip/irq-bcm7038-l1.c:89:28: warning: unused function 'reg_mask_status'
static inline unsigned int reg_mask_status(struct bcm7038_l1_chip
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r2
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 133, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $0, $1
and $0, $2
sc $0, $1
beqz $0, 1b
.set pop
'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 0c553cc1af2e4c14100df6cf4a6fc91987e778e6)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-0c553cc1af/bin
clang-14: note: diagnostic msg:
Makefile arch block drivers include kernel mm nr_bisected scripts sound source usr
--
kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_REALTIME,
^~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_MONOTONIC,
^~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_BOOTTIME,
^~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_TAI,
^~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:1487:7: warning: variable 'expires_in_hardirq' set but not used
bool expires_in_hardirq;
^
kernel/time/hrtimer.c:147:20: warning: unused function 'is_migration_base'
static inline bool is_migration_base(struct hrtimer_clock_base
^
>> kernel/time/hrtimer.c:621:19: warning: unused function 'hrtimer_hres_active'
static inline int hrtimer_hres_active(void)
^
kernel/time/hrtimer.c:1726:20: warning: unused function '__hrtimer_peek_ahead_timers'
static inline void __hrtimer_peek_ahead_timers(void) { }
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 21, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 0c553cc1af2e4c14100df6cf4a6fc91987e778e6)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-0c553cc1af/bin
clang-14: note: diagnostic msg:
Makefile arch block drivers include kernel mm nr_bisected scripts sound source usr
vim +/reg_mask_status +89 drivers/irqchip/irq-bcm7038-l1.c
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 88
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 @89 static inline unsigned int reg_mask_status(struct bcm7038_l1_chip *intc,
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 90 unsigned int word)
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 91 {
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 92 return (1 * intc->n_words + word) * sizeof(u32);
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 93 }
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 94
:::::: The code at line 89 was first introduced by commit
:::::: 5f7f0317ed28b86bdae9baf65bb72d405b6f79ee IRQCHIP: Add new driver for BCM7038-style level 1 interrupt controllers
:::::: TO: Kevin Cernekee <cernekee@...il.com>
:::::: CC: Ralf Baechle <ralf@...ux-mips.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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