Messages in this thread | | | Date | Tue, 11 Apr 2006 18:29:21 +0200 | From | Rudolf Marek <> | Subject | Re: [lm-sensors] scx200_acb: Use PCI I/O resource when appropriate |
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Hello all,
> And so our dirty laundry is out... :) > > We have a sad history here - back a few parts, we had less descriptors to > describe IO, so we opted to combine several components under the same PCI > header to save resources. So the bottom line is that we have at least three > desirable devices (timers, GPIO pins and the SMBus) that all lay claim to > the same device. So a proper PCI header would be difficult to implement - > either we would have 1 device that registered with three different > subsystems, or we would have three individual devices, the first of which > would get the PCI resources to the ruin of the others.
Well we had the problem with i2c-viapro and vi686a. Best solution was to fail from the probe function - like this:
/* Always return failure here. This is to allow other drivers to bind * to this pci device. We don't really want to have control over the * pci device, we only wanted to read as few register values from it. */ return -ENODEV;
release_region: release_region(vt596_smba, 8); return error; }
> > So this is the solution I came up with, for older parts. For newer parts, > I sat the BIOS guys down in a room with a guy name Bruno, and they agreed > to make a separate header for each component.
This is good ;)
Regards Rudolf - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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