On Fri, Aug 23, 2013 at 09:45:10PM -0700, Guenter Roeck wrote:Seems to me you answered your question. It should be possible
"What happens when you have an ACPI device that contains an interrupt in
_CRS and contains a different interrupt in an embedded FDT block?"
Does the situation occur today, ie does it ever happen that one interrupt
for a device is specified (if that is the correct term) in _CRS and
another by some other means ?
The only case I can think of is PCI, where we ignored the ACPI-provided
resources until fairly recently. That was a somewhat reasonable thing to
do, since the hardware still had to support pre-ACPI operating systems
and so the non-ACPI information sources were typically correct.
Other than that, I think we always trust the ACPI data.