static ssize_t snd_compr_read(struct file *f, char __user *buf,
		size_t count, loff_t *offset)
{
	return -ENXIO;
}
static ssize_t snd_compr_read(struct file *f, char __user *buf,
		size_t count, loff_t *offset)
{
	return -ENXIO;
}