tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-5.4 head: 2f06062940cf83ed6c2aeeb9e0c5138f08b486a9 commit: 24a003df7ae2c314aa4c9b4f1be8d4032a5e3036 [12/75] ASoC: SOF: Intel: hda-dai: fix potential locking issue config: parisc-randconfig-r036-20211122 (attached as .config) compiler: hppa-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-stable pending-5.4 git checkout 24a003df7ae2c314aa4c9b4f1be8d4032a5e3036 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/mm.h:99, from include/sound/pcm.h:15, from include/sound/pcm_params.h:10, from sound/soc/sof/intel/hda-dai.c:11: include/asm-generic/pgtable.h: In function 'pte_clear_not_present_full': arch/parisc/include/asm/pgtable.h:91:23: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ arch/parisc/include/asm/pgtable.h:316:34: note: in expansion of macro 'set_pte_at' 316 | #define pte_clear(mm, addr, xp) set_pte_at(mm, addr, xp, __pte(0)) | ^~~~~~~~~~ include/asm-generic/pgtable.h:201:9: note: in expansion of macro 'pte_clear' 201 | pte_clear(mm, address, ptep); | ^~~~~~~~~ include/asm-generic/pgtable.h: In function '__ptep_modify_prot_commit': arch/parisc/include/asm/pgtable.h:91:23: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ include/asm-generic/pgtable.h:629:9: note: in expansion of macro 'set_pte_at' 629 | set_pte_at(vma->vm_mm, addr, ptep, pte); | ^~~~~~~~~~ sound/soc/sof/intel/hda-dai.c: In function 'hda_link_stream_assign': 110 | snd_hdac_ext_stream_decouple_locked(bus, res, true); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | snd_hdac_ext_stream_decouple cc1: some warnings being treated as errors vim +110 sound/soc/sof/intel/hda-dai.c 53 54 static struct hdac_ext_stream * 55 hda_link_stream_assign(struct hdac_bus *bus, 56 struct snd_pcm_substream *substream) 57 { 58 struct snd_soc_pcm_runtime *rtd = substream->private_data; 59 struct sof_intel_hda_stream *hda_stream; 60 struct hdac_ext_stream *res = NULL; 61 struct hdac_stream *stream = NULL; 62 63 int stream_dir = substream->stream; 64 65 if (!bus->ppcap) { 66 dev_err(bus->dev, "stream type not supported\n"); 67 return NULL; 68 } 69 70 spin_lock_irq(&bus->reg_lock); 71 list_for_each_entry(stream, &bus->stream_list, list) { 72 struct hdac_ext_stream *hstream = 73 stream_to_hdac_ext_stream(stream); 74 if (stream->direction != substream->stream) 75 continue; 76 77 hda_stream = hstream_to_sof_hda_stream(hstream); 78 79 /* check if link is available */ 80 if (!hstream->link_locked) { 81 if (stream->opened) { 82 /* 83 * check if the stream tag matches the stream 84 * tag of one of the connected FEs 85 */ 86 if (hda_check_fes(rtd, stream_dir, 87 stream->stream_tag)) { 88 res = hstream; 89 break; 90 } 91 } else { 92 res = hstream; 93 94 /* 95 * This must be a hostless stream. 96 * So reserve the host DMA channel. 97 */ 98 hda_stream->host_reserved = 1; 99 break; 100 } 101 } 102 } 103 104 if (res) { 105 /* 106 * Decouple host and link DMA. The decoupled flag 107 * is updated in snd_hdac_ext_stream_decouple(). 108 */ 109 if (!res->decoupled) 111 112 res->link_locked = 1; 113 res->link_substream = substream; 114 } 115 spin_unlock_irq(&bus->reg_lock); 116 117 return res; 118 } 119 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org