Re: compact flash IDE hot-swap summary please

From: Alan Cox (
Date: Wed Jul 23 2003 - 15:13:51 EST

On Mer, 2003-07-23 at 20:49, Russell King wrote:
> > Drive level hotswap is supported only in the "I unmounted it all
> > properly first" case and providing your system has the required bus
> > isolation. Typically its also only allowed in IDE if you have a
> > single disk on the channel. With dual device you tend to have nasty
> > accidents pulling something out while the other device is "live"
> Any ideas if this is going to be fixed for 2.6? I think this is a show
> stopper, certainly for embedded devices - a fair number of people do use
> CF cards in their embedded solutions, and some of us hotplug CF cards to
> grab images off our digital cameras.

Everyone I know is using the PCMCIA interface stuff for that. Now that
can support the unplugging but the ide-cs code is still not doing the
right things in this case (and the core could be a little more careful).
The ide_unregister can fail - you are supposed to call it again later if
it does - ide_cs doesnt

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