linux-kernel - sound/pci/hda/patch_realtek.c:886:20: warning: unused function 'alc

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Date:   Wed, 22 Dec 2021 21:00:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: sound/pci/hda/patch_realtek.c:886:20: warning: unused function
 'alc_shutup'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2f47a9a4dfa3674fad19a49b40c5103a9a8e1589
commit: 327b34f2a97d72c41d4854d61336c9ae6ffe4a44 ALSA: hda: Nuke unused reboot_notify callback
date:   4 months ago
config: mips-buildonly-randconfig-r003-20211222 (https://download.01.org/0day-ci/archive/20211222/202112222030.pe8E3Bq0-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project de4e0195ae1c39f1c3b07834b8e32c113f4f20eb)
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=327b34f2a97d72c41d4854d61336c9ae6ffe4a44
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 327b34f2a97d72c41d4854d61336c9ae6ffe4a44
        # 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 fs/ sound/pci/hda/

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 >>):

>> sound/pci/hda/patch_realtek.c:886:20: warning: unused function 'alc_shutup'
   static inline void alc_shutup(struct hda_codec
   ^
   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 = 105, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
   1: ll $0, $1
   or $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 de4e0195ae1c39f1c3b07834b8e32c113f4f20eb)
   Target: mipsel-unknown-linux
   Thread model: posix
   InstalledDir: /opt/cross/clang-de4e0195ae/bin
   clang-14: note: diagnostic msg:
   Makefile arch drivers fs include kernel mm nr_bisected scripts sound source usr


vim +/alc_shutup +886 sound/pci/hda/patch_realtek.c

a361d84bfcd938 Kailang Yang 2007-06-05  885  
08c189f2c5523e Takashi Iwai 2012-12-19 @886  static inline void alc_shutup(struct hda_codec *codec)
a361d84bfcd938 Kailang Yang 2007-06-05  887  {
1d045db96ad9b8 Takashi Iwai 2011-07-07  888  	struct alc_spec *spec = codec->spec;
a361d84bfcd938 Kailang Yang 2007-06-05  889  
c7273bd6c1922a Takashi Iwai 2018-06-12  890  	if (!snd_hda_get_bool_hint(codec, "shutup"))
c7273bd6c1922a Takashi Iwai 2018-06-12  891  		return; /* disabled explicitly by hints */
c7273bd6c1922a Takashi Iwai 2018-06-12  892  
08c189f2c5523e Takashi Iwai 2012-12-19  893  	if (spec && spec->shutup)
08c189f2c5523e Takashi Iwai 2012-12-19  894  		spec->shutup(codec);
9bfb2844a2f9e6 Takashi Iwai 2013-07-24  895  	else
c0ca5eced22215 Takashi Iwai 2019-02-20  896  		alc_shutup_pins(codec);
1d045db96ad9b8 Takashi Iwai 2011-07-07  897  }
1f0f4b8036b1fe Takashi Iwai 2011-06-27  898  

:::::: The code at line 886 was first introduced by commit
:::::: 08c189f2c5523eda847cddb89eb8f44c0b957431 ALSA: hda - Use generic parser codes for Realtek driver

:::::: TO: Takashi Iwai <tiwai@...e.de>
:::::: CC: Takashi Iwai <tiwai@...e.de>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org