diff --git a/[refs] b/[refs]
index b51b2695273b..edfffd686363 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0c67dc242cf73b9c99a05bfd0122fc9ba1970d37
+refs/heads/master: c2f4191a9c4dbbb5c8bc7f2c0eb5023b97dd2a49
diff --git a/trunk/drivers/acpi/bus.c b/trunk/drivers/acpi/bus.c
index 3188da3df8da..3d4fc7af02f7 100644
--- a/trunk/drivers/acpi/bus.c
+++ b/trunk/drivers/acpi/bus.c
@@ -548,6 +548,10 @@ static void acpi_bus_osc_support(void)
 	capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
 #endif
 
+#ifdef ACPI_HOTPLUG_OST
+	capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_HOTPLUG_OST_SUPPORT;
+#endif
+
 	if (!ghes_disable)
 		capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_APEI_SUPPORT;
 	if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))