ACPICA: Tables: Change table duplication check to be related to acpi_gbl_verify_table...

ACPICA commit 3d837b5d4b1033942b4d91c7d3801a09c3157918

acpi_gbl_verify_table_checksum is used to avoid validating (mapping) an entire
table in OS boot stage. 2nd "Reload" check in acpi_tb_install_standard_table()
is prepared for the same purpose. So this patch combines them together
using a renamed acpi_gbl_enable_table_validation flag. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/3d837b5d
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index 7056ca0..24d9971 100644 (file)
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -338,7 +338,7 @@ void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
 acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc)
 {
 
-       if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) {
+       if (!table_desc->pointer && !acpi_gbl_enable_table_validation) {
                /*
                 * Only validates the header of the table.
                 * Note that Length contains the size of the mapping after invoking
@@ -394,7 +394,7 @@ acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc, char *signature)
 
        /* Verify the checksum */
 
-       if (acpi_gbl_verify_table_checksum) {
+       if (acpi_gbl_enable_table_validation) {
                status =
                    acpi_tb_verify_checksum(table_desc->pointer,
                                            table_desc->length);

diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 9d21296..f7bc362 100644 (file)
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -221,7 +221,7 @@ acpi_tb_install_standard_table(acpi_physical_address address,
 
        (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
 
-       if (reload) {
+       if (acpi_gbl_enable_table_validation) {
 
                /* Check if table is already registered */
 

diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 18508b2..38c0104 100644 (file)
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -194,6 +194,14 @@ acpi_status ACPI_INIT_FUNCTION acpi_reallocate_root_table(void)
                }
        }
 
+       if (!acpi_gbl_enable_table_validation) {
+               /*
+                * Now it's safe to do full table validation. We can do deferred
+                * table initilization here once the flag is set.
+                */
+               acpi_gbl_enable_table_validation = TRUE;
+       }
+
        acpi_gbl_root_table_list.flags |= ACPI_ROOT_ALLOW_RESIZE;
 
        status = acpi_tb_resize_root_table_list();

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index af74b42..59f2f96 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -995,9 +995,6 @@ void __init acpi_early_init(void)
 
        printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
 
-       /* It's safe to verify table checksums during late stage */
-       acpi_gbl_verify_table_checksum = TRUE;
-
        /* enable workarounds, unless strict ACPI spec. compliance */
        if (!acpi_strict)
                acpi_gbl_enable_interpreter_slack = TRUE;

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index ff42539..80ce2a7 100644 (file)
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -740,10 +740,10 @@ int __init acpi_table_init(void)
 
        if (acpi_verify_table_checksum) {
                pr_info("Early table checksum verification enabled\n");
-               acpi_gbl_verify_table_checksum = TRUE;
+               acpi_gbl_enable_table_validation = TRUE;
        } else {
                pr_info("Early table checksum verification disabled\n");
-               acpi_gbl_verify_table_checksum = FALSE;
+               acpi_gbl_enable_table_validation = FALSE;
        }
 
        status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);

diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index a59c44c..12dac84 100644 (file)
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -160,13 +160,14 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_create_osi_method, TRUE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_use_default_register_widths, TRUE);
 
 /*
- * Whether or not to verify the table checksum before installation. Set
- * this to TRUE to verify the table checksum before install it to the table
- * manager. Note that enabling this option causes errors to happen in some
- * OSPMs during early initialization stages. Default behavior is to do such
- * verification.
- */
-ACPI_INIT_GLOBAL(u8, acpi_gbl_verify_table_checksum, TRUE);
+ * Whether or not to validate (map) an entire table to verify
+ * checksum/duplication in early stage before install. Set this to TRUE to
+ * allow early table validation before install it to the table manager.
+ * Note that enabling this option causes errors to happen in some OSPMs
+ * during early initialization stages. Default behavior is to allow such
+ * validation.
+ */
+ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_table_validation, TRUE);
 
 /*
  * Optionally enable output from the AML Debug Object.