Hi Takashi, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git topic/pm-ops head: 623b2f6110ff118b84628595d53e4947f2883329 commit: e2a78f52bd0f02f34a84d1f4437dadf3cefdca79 [9/31] ALSA: ens137x: Replace with DEFINE_SIMPLE_DEV_PM_OPS() config: i386-randconfig-012-20240125 (https://download.01.org/0day-ci/archive/20240126/202401261439.SV1NYR8a-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240126/202401261439.SV1NYR8a-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401261439.SV1NYR8a-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> sound/pci/ens1370.c:1988:2: error: call to undeclared function 'snd_ak4531_suspend'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1988 | snd_ak4531_suspend(ensoniq->u.es1370.ak4531); | ^ sound/pci/ens1370.c:1988:2: note: did you mean 'snd_ak4531_mixer'? include/sound/ak4531_codec.h:62:5: note: 'snd_ak4531_mixer' declared here 62 | int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531, | ^ >> sound/pci/ens1370.c:2003:2: error: call to undeclared function 'snd_ak4531_resume'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2003 | snd_ak4531_resume(ensoniq->u.es1370.ak4531); | ^ 2 errors generated. vim +/snd_ak4531_suspend +1988 sound/pci/ens1370.c f31a31b9024f21 Kurt J. Bosch 2005-11-16 1970 68cb2b55927885 Takashi Iwai 2012-07-02 1971 static int snd_ensoniq_suspend(struct device *dev) f31a31b9024f21 Kurt J. Bosch 2005-11-16 1972 { 68cb2b55927885 Takashi Iwai 2012-07-02 1973 struct snd_card *card = dev_get_drvdata(dev); fe8be10786c040 Takashi Iwai 2005-11-17 1974 struct ensoniq *ensoniq = card->private_data; fe8be10786c040 Takashi Iwai 2005-11-17 1975 fe8be10786c040 Takashi Iwai 2005-11-17 1976 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); f31a31b9024f21 Kurt J. Bosch 2005-11-16 1977 f31a31b9024f21 Kurt J. Bosch 2005-11-16 1978 #ifdef CHIP1371 f31a31b9024f21 Kurt J. Bosch 2005-11-16 1979 snd_ac97_suspend(ensoniq->u.es1371.ac97); f31a31b9024f21 Kurt J. Bosch 2005-11-16 1980 #else 15f500a6994e55 Takashi Iwai 2006-01-12 1981 /* try to reset AK4531 */ 15f500a6994e55 Takashi Iwai 2006-01-12 1982 outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x02), ES_REG(ensoniq, 1370_CODEC)); 15f500a6994e55 Takashi Iwai 2006-01-12 1983 inw(ES_REG(ensoniq, 1370_CODEC)); 15f500a6994e55 Takashi Iwai 2006-01-12 1984 udelay(100); 15f500a6994e55 Takashi Iwai 2006-01-12 1985 outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x03), ES_REG(ensoniq, 1370_CODEC)); 15f500a6994e55 Takashi Iwai 2006-01-12 1986 inw(ES_REG(ensoniq, 1370_CODEC)); 15f500a6994e55 Takashi Iwai 2006-01-12 1987 udelay(100); fe8be10786c040 Takashi Iwai 2005-11-17 @1988 snd_ak4531_suspend(ensoniq->u.es1370.ak4531); f31a31b9024f21 Kurt J. Bosch 2005-11-16 1989 #endif f31a31b9024f21 Kurt J. Bosch 2005-11-16 1990 return 0; f31a31b9024f21 Kurt J. Bosch 2005-11-16 1991 } f31a31b9024f21 Kurt J. Bosch 2005-11-16 1992 68cb2b55927885 Takashi Iwai 2012-07-02 1993 static int snd_ensoniq_resume(struct device *dev) f31a31b9024f21 Kurt J. Bosch 2005-11-16 1994 { 68cb2b55927885 Takashi Iwai 2012-07-02 1995 struct snd_card *card = dev_get_drvdata(dev); fe8be10786c040 Takashi Iwai 2005-11-17 1996 struct ensoniq *ensoniq = card->private_data; f31a31b9024f21 Kurt J. Bosch 2005-11-16 1997 f31a31b9024f21 Kurt J. Bosch 2005-11-16 1998 snd_ensoniq_chip_init(ensoniq); f31a31b9024f21 Kurt J. Bosch 2005-11-16 1999 f31a31b9024f21 Kurt J. Bosch 2005-11-16 2000 #ifdef CHIP1371 f31a31b9024f21 Kurt J. Bosch 2005-11-16 2001 snd_ac97_resume(ensoniq->u.es1371.ac97); f31a31b9024f21 Kurt J. Bosch 2005-11-16 2002 #else fe8be10786c040 Takashi Iwai 2005-11-17 @2003 snd_ak4531_resume(ensoniq->u.es1370.ak4531); f31a31b9024f21 Kurt J. Bosch 2005-11-16 2004 #endif fe8be10786c040 Takashi Iwai 2005-11-17 2005 snd_power_change_state(card, SNDRV_CTL_POWER_D0); f31a31b9024f21 Kurt J. Bosch 2005-11-16 2006 return 0; f31a31b9024f21 Kurt J. Bosch 2005-11-16 2007 } f31a31b9024f21 Kurt J. Bosch 2005-11-16 2008 :::::: The code at line 1988 was first introduced by commit :::::: fe8be10786c040bce53c18048d75b1b23aec64ae [ALSA] ens137x - Fix and ADD PM support :::::: TO: Takashi Iwai <tiwai@xxxxxxx> :::::: CC: Jaroslav Kysela <perex@xxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
