Re: 2.3 wish: integrate pcmcia into mainstream kernel

Alan Olsen (alano@summanulla.pcx.ncd.com)
Thu, 03 Jun 1999 13:08:36 -0700

> > you the information - and if you are sane and don't need exclusive
>
> You need to be able to ask "is anyone on this IRQ line". The current code
> answers "is anyone currently listening to this IRQ". That isn't the same
> thing. Eg IRQ 3 will appear to be free until you try and use the modem.
> If PCMCIA ate it first then badness occurs.

This usually happens to IRQ 12 and PS/2 style mice. (If you boot with a card or two plugged in and IRQ 12 is not speciffically excluded.)

I have gotten bit by this one as well.

Another sticky laptop issue is installs on the Libretto. The PCMCIA issue applies, as well as an oddity that if you need more than one floppy, Linux has problems seeing it. (The Libretto uses an odd floppy connector that the bios sees, but Linux does not at the point of the second disk in Redhat's install.) I can get you more details on this one if you want. A friend of mine has Linux installed on one. (And I get to hear him complain every time he upgrades.)

My problems with PCMCIA are more userland related. (Like the drivers not giving enough time for my external IDE to spin up. A forced reset fixes the problem, but it is kind of hacky.)

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