System is a
Gigabyte K8NNXP-940 NFORCE3-150 Opteron 240
3Dfx Voodoo 5 PCI
ENE CB1410 cardbus bridge
orinoco_cs based WLAN PCMCIA card

latest tested kernel was 2.6.26-rc2.

At PCI bus initialization I get the following error:

PCI: Failed to allocate mem resource #9:4000000@f0000000 for 0000:01:08.0 return value -16
PCI: Failed to allocate mem resource #10:4000000@f8000000 for 0000:01:08.0 return value -16

The cause seems to be that find_resource returns -EBUSY=-16 in kernel/resource.c for these memory ranges.
I've added some debug output to the correspondening code for the log.
Later on another error is triggered by this one causing the WLAN PCMCIA card firmware initialization to fail.
somehow the parent bridge and the voodoo card seem to like these memory ranges too. I'll try an AGP graphics
card later. But I noticed these kind of errors seems to be fairly common.

Attached is a dmesg and lspci -v

Jon Daniel