7b5d098c90
The interrupts-extended property is a list of controller-specific interrupt tuples for more than one controller. The decode routine of every PIC gets called in the pre-INTRNG code (nexus doesn't know which device instance belongs to which fdt node), so the GIC code has to check each FDT node it is asked to decode to ensure it is the owner. Because in the pre-INTRNG world there can only be one instance of a GIC, it's safe to cache the results of a positive lookup in a static variable to avoid the expensive lookups on subsequent calls. Submitted by: Svatopluk Kraus <onwahe@gmail.com> Differential Revision: https://reviews.freebsd.org/D2345
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