Hi Baolin & Yintang,

This build error may be caused by commit cce1396936ef（“ASoC: sprd: Add Spreadtrum audio compress offload support”）. Perhaps this line: +obj-$(CONFIG_SND_SOC_SPRD) += sprd-pcm-dma.o sprd-pcm-compress.o may be changed to: obj-$(CONFIG_SND_SOC_SPRD) += sprd-pcm-dma.o sprd-pcm-dma-objs += sprd-pcm-compress.o

--- Best wishes Wen

Hi Wen,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2 head: 6d5e2bf9d203e4d9e08ca2e9420c6ff22ad190af commit: c705247136a523488eac806bd357c3e5d79a7acd [105/107] ASoC: fsl_utils: fix a leaked reference by adding missing of_node_put config: mips-allmodconfig (attached as .config) compiler: mips-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout c705247136a523488eac806bd357c3e5d79a7acd # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=mips

All errors (new ones prefixed by >>):

...

...

ERROR: "sprd_platform_compr_ops" [sound/soc/sprd/sprd-pcm-dma.ko] undefined!