On Hyper-V a 16 byte array isn't large enough for the strings.
Scope (\_SB)
{
Device (GENC)
{
Name (_CID, "VM_Gen_Counter") // _CID: Compatible ID
Name (_HID, "Hyper_V_Gen_Counter_V1") // _HID: Hardware ID
Name (_UID, 0x00) // _UID: Unique ID
Name (_DDN, "VM_Gen_Counter") // _DDN: DOS Device Name
-"Hyper_V_Gen_Cou" at acpi0 not configured
+"Hyper_V_Gen_Counter_V1" at acpi0 not configured
Index: acpi.c
===================================================================
RCS file: /cvs/src/sys/dev/acpi/acpi.c,v
retrieving revision 1.318
diff -u -p -r1.318 acpi.c
--- acpi.c 8 Jan 2017 12:39:16 -0000 1.318
+++ acpi.c 11 Jan 2017 06:55:55 -0000
@@ -2813,15 +2813,15 @@ acpi_foundhid(struct aml_node *node, voi
{
struct acpi_softc *sc = (struct acpi_softc *)arg;
struct device *self = (struct device *)arg;
- char cdev[16];
- char dev[16];
+ char cdev[32];
+ char dev[32];
struct acpi_attach_args aaa;
int64_t sta;
#ifndef SMALL_KERNEL
int i;
#endif
- if (acpi_parsehid(node, arg, cdev, dev, 16) != 0)
+ if (acpi_parsehid(node, arg, cdev, dev, sizeof(dev)) != 0)
return (0);
if (aml_evalinteger(sc, node->parent, "_STA", 0, NULL, &sta))
