On Wed, Sep 29, 2021 at 03:50:40PM +0100, Simon Trimmer wrote:

> +#if IS_ENABLED(CONFIG_DEBUG_FS)
>  	cs_dsp_init_debugfs(&dsp->cs_dsp, component->debugfs_root);
> +#endif

The more common pattern is to declare a static inline stub function
instead of the prototype if debugfs is disabled.