Re: simple pnp bios io resources bug makes system unusable

From: CarlosRomero (
Date: Tue Jul 01 2003 - 00:54:10 EST

my one line patch just skips an io registration with a simple sanity check.
never once have i heard a device with an ioport of 0x0.
question is why it happens and only once.
tested with

ISA Plug and Play:
U.S. Robotics Sportster 33600 FAX/Voice Int
Creative ViBRA16C PnP
Crystal Codec

Host/PCI Bridge:
VIA Technologies, In VT82C585VP [Apollo V
VIA Technologies, In VT82C586/A/B PCI-to-
VIA Technologies, In VT82C586/B/686A/B PI
VIA Technologies, In USB
VIA Technologies, In VT82C586B ACPI

(also noticing cutoff in /sys/devices/pci0/*/name)

>Yes, I also ran into this problem, Adam is was also working on a fix
>although I wonder if it's the same fix?

>Shawn S.

>>List: linux-kernel
>>Subject: simple pnp bios io resources bug makes system unusable
>>From: CarlosRomero <caberome () bellsouth ! net>
>>Date: 2003-07-01 3:38:17

>>cat /sys/devices/pnp0/00\:0c/name
>>Reserved Motherboard Resources

>>cat /sys/devices/pnp0/00\:0c/resources
>>state = active
>>io 0x4d0-0x4d1
>>io 0xcf8-0xcff
>>io 0x3f7-0x3f7
>>io 0x401-0x407
>>io 0x298-0x298
>>io 0x00000000-0xffffffff
>>mem 0xfffe0000-0xffffffff
>>mem 0x100000-0x7ffffff

>>fixup: check for null io base, other devices are now able to initialize.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Mon Jul 07 2003 - 22:00:12 EST