Hi, On a imx6q-hummingboard the following warning is seen when running linux-next 20150408: [ 2.270006] imx-spdif sound-spdif: ASoC: Failed to create DAPM debugfs directory Looking at sound/soc/fsl/imx-spdif.c and sound/soc/fsl/fsl_spdif.c I am not sure how to avoid such warning. Any ideas? Thanks, Fabio Estevam