On Monday, February 20, 2012 05:45:04 PM Thomas Renninger wrote:
> This is a quirk for a broken BIOS.
Afaik IBM will release a BIOS update for this.
I still send this patch out for documentation.
This one might still be worth applying because:
- Users with an old BIOS will not run into regressions with
latest kernels using radeon modesetting (by default).
- There existed a quirk interface already for one _PRT variant.
This patch extends this interface to also be able to override
bad BIOS irqs when the other method, hard wired IRQs, compare with
ACPI spec: 6.2.11 _PRT (PCI Routing Table):
In the second model, the PCI interrupts are hardwired to
specific interrupt inputs...
Thomas
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