Re: 2.4.2 yenta_socket problems on ThinkPad 240

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 16 Jun 2001 19:23:56 +0100 (BST)


> Cardbus shouldn't be touching the bus stuff at all, BUT there may be
> strange hardware that doesn't like the following:
>
> config_writeb(socket, PCI_SEC_LATENCY_TIMER, 176);
> config_writeb(socket, PCI_PRIMARY_BUS, dev->bus->number);
> config_writeb(socket, PCI_SECONDARY_BUS, dev->subordinate->number);
> config_writeb(socket, PCI_SUBORDINATE_BUS, dev->subordinate->number);
>
> I have heard rumors of PCI devices that want all these set with a single
> double-word write.

That would be consistent with the behaviour in the bugzilla report - it went
from 0,0,0,1 to 176,0,0,0...

Alan

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