Re: [PATCH] 50drm: Install dracut 50drm module in hostonly mode when drm driver is currently in use.

[Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 05/24/2013 10:22 AM, WANG Chao wrote:
> Now only 50plymouth module can pull in 50drm and that's very limited.
> Because KMS capable drm drivers are much needed in initrd to have a
> frame buffer console on the screen.
> 
> Particularly, when building kdump initrd, plymouth module is omitted,
> but drm is necessary to setup a working screen for one sitting in front
> of a monitor.
> 
> Signed-off-by: WANG Chao <chaowang-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> ---
>  modules.d/50drm/module-setup.sh | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/modules.d/50drm/module-setup.sh b/modules.d/50drm/module-setup.sh
> index bf33c5b..648e8f4 100644
> --- a/modules.d/50drm/module-setup.sh
> +++ b/modules.d/50drm/module-setup.sh
> @@ -3,6 +3,10 @@
>  # ex: ts=8 sw=4 sts=4 et filetype=sh
>  
>  check() {
> +    if [[ $hostonly ]] && [ -d /sys/module/drm/drivers ]; then
> +        return 0
> +    fi
> +
>      return 255
>  }
>  
> 

Hmm, why not let the kdump module depend on drm?

depends() {
    echo drm
}

Anyway, do we really need drm for a simple console? Those drivers are really
really big and take a long time to load and initialize?