[alsa-devel] [PATCH v3 4/6] core: add API header and driver header files

[Mark Brown]

On Mon, Dec 05, 2011 at 01:09:49PM +0530, Vinod Koul wrote:

> +static inline void snd_compr_fragment_elapsed(struct snd_compr_stream *stream)
> +{
> +	wake_up(&stream->runtime->sleep);
> +}

You need to include sched.h for this.