Inside the ASoC code there a dma_alloc_coherent() call. This call is failing because dma_ops is null. --kernel BUG at /home/jonsmirl/fs/arch/powerpc/include/asm/dma-mapping.h:237! The device is soc-audio which is a platform_device. How do I get dma_ops filled in for a mpc5200 platform device? -- Jon Smirl jonsmirl at gmail.com