Messages in this thread | | | Date | Tue, 3 Aug 1999 23:15:44 +0200 | From | Martin Mares <> | Subject | Re: pci_find_class question |
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Hi Tim,
> Here's a patch that doesn't work as intended. The idea is to find all > 'parallel communication' PCI cards, but that doesn't happen. The card I > have in this machine seems to have class > ((PCI_CLASS_COMMUNICATION_PARALLEL << 8) | 2), and pci_find_class just > does a straight compare with no masking. > > So I guess what I'm really asking is: what does the LSB byte in the class > mean?
The LSB contains a programming interface code.
The pci_find_class function is a mistake of history. Either walk the list of pci_dev structures or use pci_find_device(PCI_ANY_ID, PCI_ANY_ID, ...) and check the class codes yourself.
Have a nice fortnight -- Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth "Linux _is_ user-friendly. It is not ignorant-friendly and idiot-friendly."
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