Date: Thu, 20 Apr 2000 11:35:25 -0400
From: James Mastros <james@rtweb.net>
This has explained a little buglet: it's apparently possible for a modem
(like mine, for example) to be detected more then once, under a "normal" and
a "compat" id. In the case of the serial driver, this results in an
apparently harmless "SERIAL: PNP device 'PNPc10f' prepare failed" message
at loadtime. However, I'm betting that it could produce more... wierd
results in other drivers, like producing two detected devices with two
different configurations, the first of which wouldn't work, because the
config of the physical device was changed for the second.
This would seem to be a Bad Thing. Perhaps the device should be marked as
"claimed" under it's device id/serial number/logical device id tripple,
which should be universily unique, so that it won't be deteced by later
calls to isapnp_find_dev.
Is there some way we can tell that a two PNP device structures
correspond to the same device? That is, if we detect a model-specific
entry, and we use that, can we determine that the generic entry
corresponds to the same physical device? Otherwise, we won't be able to
detect that the device has been "claimed".
- Ted
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