ACPICA: Tables: Cleanup table checksum verification code.

This patch reduces code redundancy by moving the FACS/S3PT checksum
verification skip logic into acpi_tb_verify_checksum() and other
calls of this function also get benefit from this change.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 42a13c0..9e6788f 100644 (file)
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -80,16 +80,10 @@ acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc)
                }
        }
 
-       /* FACS is the odd table, has no standard ACPI header and no checksum */
+       /* Always calculate checksum, ignore bad checksum if requested */
 
-       if (!ACPI_COMPARE_NAME(&table_desc->signature, ACPI_SIG_FACS)) {
-
-               /* Always calculate checksum, ignore bad checksum if requested */
-
-               status =
-                   acpi_tb_verify_checksum(table_desc->pointer,
-                                           table_desc->length);
-       }
+       status =
+           acpi_tb_verify_checksum(table_desc->pointer, table_desc->length);
 
        return_ACPI_STATUS(status);
 }

diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index dc963f8..499759a 100644 (file)
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -190,6 +190,16 @@ acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
 {
        u8 checksum;
 
+       /*
+        * FACS/S3PT:
+        * They are the odd tables, have no standard ACPI header and no checksum
+        */
+
+       if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_S3PT) ||
+           ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FACS)) {
+               return (AE_OK);
+       }
+
        /* Compute the checksum on the table */
 
        checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);