diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
index 63f95d3eb2c..a2e58833d25 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -1014,14 +1014,27 @@ acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
 	    continue;
 
 	/*
-	 * Check for matching resources.  We must have at least one,
-	 * and all resources specified have to match.
+	 * Check for matching resources.  We must have at least one match.
+	 * Since I/O and memory resources cannot be shared, if we get a
+	 * match on either of those, ignore any mismatches in IRQs or DRQs.
 	 *
 	 * XXX: We may want to revisit this to be more lenient and wire
 	 * as long as it gets one match.
 	 */
 	matches = 0;
 	if (resource_long_value(name, unit, "port", &value) == 0) {
+	    /*
+	     * Floppy drive controllers are notorious for having a
+	     * wide variety of resources not all of which include the
+	     * first port that is specified by the hint (typically
+	     * 0x3f0) (see the comment above fdc_isa_alloc_resources()
+	     * in fdc_isa.c).  However, they do all seem to include
+	     * port + 2 (e.g. 0x3f2) so for a floppy device, look for
+	     * 'value + 2' in the port resources instead of the hint
+	     * value.
+	     */
+	    if (strcmp(name, "fdc") == 0)
+		value += 2;
 	    if (acpi_match_resource_hint(child, SYS_RES_IOPORT, value))
 		matches++;
 	    else
@@ -1033,6 +1046,8 @@ acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
 	    else
 		continue;
 	}
+	if (matches > 0)
+	    goto matched;
 	if (resource_long_value(name, unit, "irq", &value) == 0) {
 	    if (acpi_match_resource_hint(child, SYS_RES_IRQ, value))
 		matches++;
@@ -1046,6 +1061,7 @@ acpi_hint_device_unit(device_t acdev, device_t child, const char *name,
 		continue;
 	}
 
+    matched:
 	if (matches > 0) {
 	    /* We have a winner! */
 	    *unitp = unit;
diff --git a/sys/isa/isahint.c b/sys/isa/isahint.c
index e2ce6a4d30b..5eccef85949 100644
--- a/sys/isa/isahint.c
+++ b/sys/isa/isahint.c
@@ -118,14 +118,30 @@ isa_hint_device_unit(device_t bus, device_t child, const char *name, int *unitp)
 			continue;
 
 		/*
-		 * Check for matching resources.  We must have at least one,
-		 * and all resources specified have to match.
+		 * Check for matching resources.  We must have at
+		 * least one match.  Since I/O and memory resources
+		 * cannot be shared, if we get a match on either of
+		 * those, ignore any mismatches in IRQs or DRQs.
 		 *
-		 * XXX: We may want to revisit this to be more lenient and wire
-		 * as long as it gets one match.
+		 * XXX: We may want to revisit this to be more lenient
+		 * and wire as long as it gets one match.
 		 */
 		matches = 0;
 		if (resource_long_value(name, unit, "port", &value) == 0) {
+			/*
+			 * Floppy drive controllers are notorious for
+			 * having a wide variety of resources not all
+			 * of which include the first port that is
+			 * specified by the hint (typically 0x3f0)
+			 * (see the comment above
+			 * fdc_isa_alloc_resources() in fdc_isa.c).
+			 * However, they do all seem to include port +
+			 * 2 (e.g. 0x3f2) so for a floppy device, look
+			 * for 'value + 2' in the port resources
+			 * instead of the hint value.
+			 */
+			if (strcmp(name, "fdc") == 0)
+				value += 2;
 			if (isa_match_resource_hint(child, SYS_RES_IOPORT,
 			    value))
 				matches++;
@@ -139,6 +155,8 @@ isa_hint_device_unit(device_t bus, device_t child, const char *name, int *unitp)
 			else
 				continue;
 		}
+		if (matches > 0)
+			goto matched;
 		if (resource_long_value(name, unit, "irq", &value) == 0) {
 			if (isa_match_resource_hint(child, SYS_RES_IRQ, value))
 				matches++;
@@ -152,6 +170,7 @@ isa_hint_device_unit(device_t bus, device_t child, const char *name, int *unitp)
 				continue;
 		}
 
+	matched:
 		if (matches > 0) {
 			/* We have a winner! */
 			*unitp = unit;