[PATCH 1/2] xf86/pci: fix slot claiming counting.

[Adam Jackson]

On 5/8/12 9:40 AM, Dave Airlie wrote:

> Currently if we claim a slot for a PCI driver, we never let it go properly,
> this prevents the fallback probe from reusing the slot, even though it
> isn't claimed for that pci slot.
>
> So if you set the modesetting driver to point at a specific kms device,
> that isn't a PCI device (i.e. USB dongle), then the modesetting driver
> loads, the pci probe tries to bind the config slot to the primary PCI
> device, however we then check the kms device bus id to discover it
> isn't valid. However we don't remove the claim on the slot. Next the
> old probe function is called and there is no slots to claim.
>
> This patch fixes that and converts the pciSlotClaimed boolean into
> a counter, and changes the unclaim api to take a device pointer
> to remove from the entity.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>

I _think_ this is the same root cause as:

https://bugzilla.redhat.com/show_bug.cgi?id=819146

Reviewed-by: Adam Jackson <ajax at redhat.com>

- ajax