D36896.id111573.diff
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	diff --git a/sys/sys/bus.h b/sys/sys/bus.h
	--- a/sys/sys/bus.h
	+++ b/sys/sys/bus.h
	@@ -252,17 +252,19 @@

	/**
	* @brief Interrupt type bits.
	- *
	- * These flags are used both by newbus interrupt
	- * registration (nexus.c) and also in struct intrec, which defines
	- * interrupt properties.
	*
	- * XXX We should probably revisit this and remove the vestiges of the
	- * spls implicit in names like INTR_TYPE_TTY. In the meantime, don't
	- * confuse things by renaming them (Grog, 18 July 2000).
	+ * These flags may be passed by drivers to bus_setup_intr(9) when
	+ * registering a new interrupt handler. The field is overloaded to
	+ * specify both the interrupt's type and any special properties.
	*
	- * Buses which do interrupt remapping will want to change their type
	- * to reflect what sort of devices are underneath.
	+ * The INTR_TYPE* bits will be passed to intr_priority(9) to determine
	+ * the scheduling priority of the handler's ithread. Historically, each
	+ * type was assigned a unique scheduling preference, but now only
	+ * INTR_TYPE_CLK receives a default priority higher than other
	+ * interrupts. See sys/priority.h.
	+ *
	+ * Buses may choose to modify or augment these flags as appropriate,
	+ * e.g. nexus may apply INTR_EXCL.
	*/
	enum intr_type {
	INTR_TYPE_TTY = 1,