Re: [RFC] /proc/ide/hdx/settings with ide-default pseudo-driver is a 2.6/2.7 show-stopper

[Erik Andersen <andersen@codepoet.org>]

On Thu Aug 28, 2003 at 05:47:11PM +0200, Bartlomiej Zolnierkiewicz wrote:
> Problem is when integrating ide with driverfs.
> Then you need to register/unregister ide-default as driverfs driver
> and now it can "steal" devices, ie. you have cd drive owned by ide-default,
> later you load ide-cdrom driver and your cd drive needs to be unregistered
> from ide-default driver first before it can be registered with ide-cdrom
> driver - you need to add code to do this or device will be "stealed".
> Its not very hard to do but it adds complexity.

Make an interface whereby ide-cdrom (and ide-disk, etc) can walk
the list of all unclaimed devices (i.e. devices owned by
ide-default), check they are of the correct type, and claim them
(thereby removing them from the ide-default driver).  When
unregistering, reverse the process and give the device back to
ide-default...  i.e. make ide-default a holding pen for unclaimed
devices,

 -Erik

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Erik B. Andersen             http://codepoet-consulting.com/
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