ACPI: Set hotplug _OST support bit to _OSC

When ACPI_HOTPLUG_OST is defined, set hotplug _OST support bit
OSC_SB_HOTPLUG_OST_SUPPORT to indicate that the OS supports hotplug
_OST by calling the platform-wide ACPI Operating System Capabilities
(_OSC).

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 3188da3df8da..3d4fc7af02f7 100644
--- a/drivers/acpi/bus.c
+++ b/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)))