Re: [PATCH 1/1] pci: Block config access during BIST (resend)

[Andi Kleen]

> The problem I am trying to solve is the userspace PCI access methods 
> accessing my config space when the adapter is not able to handle such an 
> access. Today these accesses bypass the device driver altogether and 
> there is no way to stop them. An alternative to this patch would be to 

For this I would add a semaphore or a lock bit to pci_dev.
Probably a simple flag is good enough that is checked by sysfs/proc
and return EBUSY when set. 

This assumes that the driver controls the device during BIST time.

-Andi
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