D31381.diff
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	diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c
	--- a/sys/kern/subr_bus.c
	+++ b/sys/kern/subr_bus.c
	@@ -1638,15 +1638,15 @@
	/* Unwired device, find the next available slot for it */
	unit = 0;
	for (unit = 0;; unit++) {
	+ /* If this device slot is already in use, skip it. */
	+ if (unit < dc->maxunit && dc->devices[unit] != NULL)
	+ continue;
	+
	/* If there is an "at" hint for a unit then skip it. */
	if (resource_string_value(dc->name, unit, "at", &s) ==
	0)
	continue;

	- /* If this device slot is already in use, skip it. */
	- if (unit < dc->maxunit && dc->devices[unit] != NULL)
	- continue;
	-
	break;
	}
	}