at32_pcm_preallocate_dma_buffer 380 sound/soc/at32/at32-pcm.c ret = at32_pcm_preallocate_dma_buffer( at32_pcm_preallocate_dma_buffer 388 sound/soc/at32/at32-pcm.c ret = at32_pcm_preallocate_dma_buffer(