Hello. Benjamin Herrenschmidt wrote:
On Tue, Dec 05, Benjamin Herrenschmidt wrote:
Olaf, can you give me a dump of /proc/ioports ? What is sitting at 0 on that PCI bus ?
with IDE=y
==> /proc/ioports <== 00000000-0000001f : dma1
So it's indeed colliding with the cruft above.
I reckon it's a bug in the firmware of this machine.
Add to pseries/pci.c a quirk for that chipset (don't forget to test for machine_is(pseries) in the quirk as they get called for all platforms in a combo kernel. The quirk shall check if resource 6 has a 0 base and clear the size as Alan suggested (possibly setting the UNSET flag as well).
Erm, I suspect it's either one or another -- you probably need to keep the size intact for resource marked IORESOURCE_UNSET. At least that's what the other code does...
Ben.
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