This patch adds an error message to complain a driver bug that the
early mappings are not unmapped by the drivers. Lv Zheng.
Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
---
drivers/acpi/acpica/tbxface.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 326df65..5700e72 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -167,6 +167,7 @@ ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_tables)
acpi_status __init acpi_reallocate_root_table(void)
{
acpi_status status;
+ u32 i;
ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
@@ -178,6 +179,21 @@ acpi_status __init acpi_reallocate_root_table(void)
return_ACPI_STATUS(AE_SUPPORT);
}
+ /*
+ * Ensure OS early boot logic, which is required by some hosts. If the
+ * table state is reported to be wrong, developers should fix the
+ * issue by invoking acpi_put_table() for the reported table during the
+ * early stage.
+ */
+ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
+ if (acpi_gbl_root_table_list.tables[i].pointer) {
+ ACPI_ERROR((AE_INFO,
+ "BUG: Table [%4.4s] isn't invalidated after booting",
+ acpi_gbl_root_table_list.tables[i].
+ signature.ascii));
+ }
+ }
+
acpi_gbl_root_table_list.flags |= ACPI_ROOT_ALLOW_RESIZE;
status = acpi_tb_resize_root_table_list();
--
1.7.10
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