On Mon, Jan 27, 2014 at 06:39:39AM -0800, Guenter Roeck wrote: > Going back to the original problem, lm90 no longer works in any non-DT > system which has CONFIG_REGULATORS enabled, such as any Ubuntu distribution. *sigh* To repeat yet again this is not associated with DT in the way that you seem to believe it is. > I agree that it would have been better if the regulator subsystem would deal > with the issue, but that seems unlikely to happen. If anything, it will get > worse with the assumption that regulators are fully declared in any ACPI > based system (such a system for sure won't know about an USB-I2C adapter > with an LM90 connected to it). So what do you want to do ? I don't think you understand what _has_full_constraints() does, the way that you're still going on about DT seems to suggest that this is the case. A USB-I2C adaptor will work in exactly the same way as anything on the motherboard in an ACPI system unless it explicitly ensures that it registers any software controllable supplies which also works fine.
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