Messages in this thread | | | Subject | Re: PCI config locking (WAS Re: [RFC/CFT] cmd640 irqlocking fixes)2 | From | Alan Cox <> | Date | 25 Jul 2002 16:45:15 +0100 |
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On Thu, 2002-07-25 at 15:18, Benjamin Herrenschmidt wrote: > So there seem to be a problem with your patch: pci_config_lock appears > to be an x86-only thing that lives deep inside arch/i386/xxx/pci-pc.c > (xxx beeing kernel or pci) > > On the other hand, there is already such a lock provided by > drivers/pci/access.c (pci_lock). You should probably fix your patch > to use that one. (and eventually get rid of the pci_config_lock > in x86, provided I didn't miss something else). But does anybody > but x86 uses CMD640 ? :)
Possibly. I don't know. The lock in question we want is the config lock. We are issuing configuration cycles so must lock against a parallel issue of I/O to the configuration ports.
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