[PATCH 06/12] ACPI: ensure several FADT fields are only used in HW reduced mode

[al.stone@linaro.org]

From: Al Stone <ahs3@redhat.com>

In acpi_os_terminate(), it was assumed that several FADT entries were
mapped into memory.  For HW reduced mode, that will not be the case.

Signed-off-by: Al Stone <al.stone@linaro.org>
---
 drivers/acpi/osl.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 017b85c..075545e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -1812,10 +1812,12 @@ acpi_status acpi_os_terminate(void)
 						 acpi_irq_handler);
 	}
 
-	acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block);
-	acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block);
-	acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block);
-	acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
+	if (!acpi_gbl_reduced_hardware) {
+		acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block);
+		acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block);
+		acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block);
+		acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
+	}
 
 	destroy_workqueue(kacpid_wq);
 	destroy_workqueue(kacpi_notify_wq);
-- 
1.8.3.1