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Date: Sat, 6 Nov 2021 03:32:37 +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/pcmcia/yenta_socket.c:147:18: warning: unused function
'exca_readw'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: fe91c4725aeed35023ba4f7a1e1adfebb6878c23
commit: c434b9f80b0923e6460031b0fd964f8b0bf3c6a6 MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbol
date: 1 year, 2 months ago
config: mips-randconfig-r021-20211017 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 8ca4b3ef19fe82d7ad6a6e1515317dcc01b41515)
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 attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/cpufreq/ drivers/mmc/host/ drivers/pcmcia/ drivers/video/fbdev/ sound/pci/ymfpci/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/pcmcia/yenta_socket.c:147:18: warning: unused function 'exca_readw'
static inline u8 exca_readw(struct yenta_socket unsigned reg)
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch drivers include kernel nr_bisected scripts sound source usr
--
>> drivers/mmc/host/sdricoh_cs.c:104:28: warning: unused function 'sdricoh_readw'
static inline unsigned int sdricoh_readw(struct sdricoh_host
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch drivers include kernel nr_bisected scripts sound source usr
--
>> drivers/video/fbdev/tridentfb.c:1127:20: warning: unused function 'shadowmode_off'
static inline void shadowmode_off(struct tridentfb_par
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch drivers include kernel nr_bisected scripts sound source usr
--
>> sound/pci/ymfpci/ymfpci_main.c:34:18: warning: unused function 'snd_ymfpci_readb'
static inline u8 snd_ymfpci_readb(struct snd_ymfpci u32 offset)
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch drivers include kernel nr_bisected scripts sound source usr
--
>> drivers/video/fbdev/aty/aty128fb.c:525:18: warning: unused function '_aty_ld_8'
static inline u8 _aty_ld_8(unsigned int regindex,
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 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 847a6807332b13f43704327c2d30103ec0347c77)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-847a680733/bin
clang-14: note: diagnostic msg:
Makefile arch drivers include kernel nr_bisected scripts sound source usr
vim +/exca_readw +147 drivers/pcmcia/yenta_socket.c
^1da177e4c3f415 Linus Torvalds 2005-04-16 146
^1da177e4c3f415 Linus Torvalds 2005-04-16 @147 static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
^1da177e4c3f415 Linus Torvalds 2005-04-16 148 {
^1da177e4c3f415 Linus Torvalds 2005-04-16 149 u16 val;
^1da177e4c3f415 Linus Torvalds 2005-04-16 150 val = readb(socket->base + 0x800 + reg);
^1da177e4c3f415 Linus Torvalds 2005-04-16 151 val |= readb(socket->base + 0x800 + reg + 1) << 8;
dd797d81d3d7da3 Dominik Brodowski 2008-08-02 152 debug("%04x %04x\n", socket, reg, val);
^1da177e4c3f415 Linus Torvalds 2005-04-16 153 return val;
^1da177e4c3f415 Linus Torvalds 2005-04-16 154 }
^1da177e4c3f415 Linus Torvalds 2005-04-16 155
:::::: The code at line 147 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
Download attachment ".config.gz" of type "application/gzip" (35620 bytes)
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