Re: PATCH: straighten out the IDE layer locking and add hotplug

[Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>]

On Tuesday 17 August 2004 16:46, Alan Cox wrote:
> > ide_match_hwif() checks for hwif->chipset - ordering will not be the same
> > i.e. you load driver for some IDE PCI controller which doesn't have
> > drives attached to it, unload it, load some other driver - hwifs will be
> > reused - some sequence in 2.4 will possibly leave you with different
> > ordering because hwif->chipset will stay as ide_pci not ide_unknown
>
> You can't unload them in 2.4.

Really?  That would simplify a lot of considerations...

> > Yep, please tell me how are you going to support drive hot plug?
>
> We can do it the 2.4-ac way - that works with the locking I think. What

if you are talking about abusing HDIO_SCAN_HWIF then HELL NO

> might be nicer if it works out is to follow the shutdown/suspend code
> approach so that we actually queue the "unplug" into the command stream.

and we are back to lack of sysfs integration