Hi Peter, I love your patch! Yet something to improve: [auto build test ERROR on tiwai-sound/for-next] [also build test ERROR on v5.18-rc4 next-20220422] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Peter-Ujfalusi/ALSA-memalloc-Add-fallback-SG-buffer-free-if-fallback-is-used-for-noncontig/20220425-203012 base: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next config: riscv-randconfig-r035-20220425 (https://download.01.org/0day-ci/archive/20220426/202204260255.k5hl4BYG-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/bf91cb1cd103c5f1e78fa154c30f1436be2723ac git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Peter-Ujfalusi/ALSA-memalloc-Add-fallback-SG-buffer-free-if-fallback-is-used-for-noncontig/20220425-203012 git checkout bf91cb1cd103c5f1e78fa154c30f1436be2723ac # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash sound/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> sound/core/memalloc.c:540:24: error: use of undeclared identifier 'SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK' if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK || ^ >> sound/core/memalloc.c:541:24: error: use of undeclared identifier 'SNDRV_DMA_TYPE_DEV_SG_FALLBACK' dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG_FALLBACK) { ^ >> sound/core/memalloc.c:543:3: error: call to undeclared function 'snd_dma_sg_fallback_free'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] snd_dma_sg_fallback_free(dmab); ^ sound/core/memalloc.c:543:3: note: did you mean 'snd_dma_vmalloc_free'? sound/core/memalloc.c:312:13: note: 'snd_dma_vmalloc_free' declared here static void snd_dma_vmalloc_free(struct snd_dma_buffer *dmab) ^ 3 errors generated. vim +/SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK +540 sound/core/memalloc.c 537 538 static void snd_dma_noncontig_free(struct snd_dma_buffer *dmab) 539 { > 540 if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG_FALLBACK || > 541 dmab->dev.type == SNDRV_DMA_TYPE_DEV_SG_FALLBACK) { 542 /* The allocation is done with a fallback, use the matching free */ > 543 snd_dma_sg_fallback_free(dmab); 544 return; 545 } 546 547 dma_vunmap_noncontiguous(dmab->dev.dev, dmab->area); 548 dma_free_noncontiguous(dmab->dev.dev, dmab->bytes, dmab->private_data, 549 dmab->dev.dir); 550 } 551 -- 0-DAY CI Kernel Test Service https://01.org/lkp