Subject: plug-n-play doesn't play nice anymore
To: None <>
From: Brett Lymn <>
List: current-users
Date: 01/08/2001 23:02:51
        I have a problem with my ISA pnp PCMCIA interface card that
seems to have surfaced somewhere between Dec 10 and Jan 4.  With a
kernel from circa Dec 10 the pcmcia card grabs a couple of free
interrupts (5 for socket events & 7 for my wavelan FWIW) and plays
nicely - I can used my wavelan card fine.  With a kernel from early
Jan the pcmcia gets irqs 3 and 4 which are the serial ports on the
i386, needless to say this does NOT play nicely, the wavelans have a
lot of problems competing for interrupts with the serial port.  I have
managed to hack around this by using the PCIC_ISA_INTR_ALLOC_MASK to
mask off interrupts in use by other devices and at least get my
wavelans working again.

Sooooo, why is this happening?  Has anyone else had this problem?

Brett Lymn, Computer Systems Administrator, BAE SYSTEMS