Bug#504391: [PATCH] mmc: add module parameter to set whether cards are assumed removable

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> You do not cater for having more than one slot e.g. N900 has two:
> one internal non-removable and one external that is removable.
> 
> What about a sysfs entry instead e.g.
> 
>  /sys/class/mmc-host/mmc*/nonremovable

That continues the assumption that the user will somehow ever know about
this stuff and configure it. Almost nobody will.

Not only does it need to be per-port there needs to be a credible
description of how it will automatically happen - who configures it,
when, how and is the data needed available.