isa_common: allow multiple device instances

aokblast · aokblast · commit f32ffd11b547 · 2025-10-03T14:20:04.000+08:00
In some devices, there may be multiple isa bridges available from different sources. Therefore, we allow multiple lpc devices to be generated so that pcie bus won't show "none" anymore. For example, in my AMD based Framework Laptop, there are two such bridges. One is acpi hinted, another is from pcie. Reviewed by: imp Approved by: lwhsu (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D52815
diff --git a/sys/isa/isa_common.c b/sys/isa/isa_common.c
@@ -1114,7 +1114,7 @@ isab_attach(device_t dev)
 {
 	device_t child;
 
-	child = device_add_child(dev, "isa", 0);
+	child = device_add_child(dev, "isa", DEVICE_UNIT_ANY);
 	if (child == NULL)
 		return (ENXIO);
 	bus_attach_children(dev);

Original file line number	Diff line number	Diff line change
`@@ -1114,7 +1114,7 @@ isab_attach(device_t dev)`
`1114`	`1114`	`{`
`1115`	`1115`	`device_t child;`
`1116`	`1116`
`1117`		`- child = device_add_child(dev, "isa", 0);`
	`1117`	`+ child = device_add_child(dev, "isa", DEVICE_UNIT_ANY);`
`1118`	`1118`	`if (child == NULL)`
`1119`	`1119`	`return (ENXIO);`
`1120`	`1120`	`bus_attach_children(dev);`