6 files changed, 134 insertions, 23 deletions

diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index 002bb33003af..949d4114eb9f 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/drivers/acpi/tables/tbfind.c b/drivers/acpi/tables/tbfind.c
index 058c064948e1..9ca3afc98c80 100644
--- a/drivers/acpi/tables/tbfind.c
+++ b/drivers/acpi/tables/tbfind.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -70,12 +70,22 @@ acpi_tb_find_table(char *signature,
 {
         acpi_native_uint i;
         acpi_status status;
+        struct acpi_table_header header;
 
         ACPI_FUNCTION_TRACE(tb_find_table);
 
+        /* Normalize the input strings */
+
+        ACPI_MEMSET(&header, 0, sizeof(struct acpi_table_header));
+        ACPI_STRNCPY(header.signature, signature, ACPI_NAME_SIZE);
+        ACPI_STRNCPY(header.oem_id, oem_id, ACPI_OEM_ID_SIZE);
+        ACPI_STRNCPY(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
+
+        /* Search for the table */
+
         for (i = 0; i < acpi_gbl_root_table_list.count; ++i) {
                 if (ACPI_MEMCMP(&(acpi_gbl_root_table_list.tables[i].signature),
-                                signature, ACPI_NAME_SIZE)) {
+                                header.signature, ACPI_NAME_SIZE)) {
 
                         /* Not the requested table */
 
@@ -104,20 +114,24 @@ acpi_tb_find_table(char *signature,
 
                 if (!ACPI_MEMCMP
                     (acpi_gbl_root_table_list.tables[i].pointer->signature,
-                     signature, ACPI_NAME_SIZE) && (!oem_id[0]
-                                                    ||
-                                                    !ACPI_MEMCMP
-                                                    (acpi_gbl_root_table_list.
-                                                     tables[i].pointer->oem_id,
-                                                     oem_id, ACPI_OEM_ID_SIZE))
+                     header.signature, ACPI_NAME_SIZE) && (!oem_id[0]
+                                                           ||
+                                                           !ACPI_MEMCMP
+                                                           (acpi_gbl_root_table_list.
+                                                            tables[i].pointer->
+                                                            oem_id,
+                                                            header.oem_id,
+                                                            ACPI_OEM_ID_SIZE))
                     && (!oem_table_id[0]
                         || !ACPI_MEMCMP(acpi_gbl_root_table_list.tables[i].
-                                        pointer->oem_table_id, oem_table_id,
+                                        pointer->oem_table_id,
+                                        header.oem_table_id,
                                         ACPI_OEM_TABLE_ID_SIZE))) {
                         *table_index = i;
 
                         ACPI_DEBUG_PRINT((ACPI_DB_TABLES,
-                                          "Found table [%4.4s]\n", signature));
+                                          "Found table [%4.4s]\n",
+                                          header.signature));
                         return_ACPI_STATUS(AE_OK);
                 }
         }
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
index 3bc0c67a9283..402f93e1ff20 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/tables/tbinstal.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -125,13 +125,20 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc,
 
         /* The table must be either an SSDT or a PSDT or an OEMx */
 
-        if ((!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT))
-            &&
-            (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT))
-            && (strncmp(table_desc->pointer->signature, "OEM", 3))) {
-                ACPI_ERROR((AE_INFO,
-                            "Table has invalid signature [%4.4s], must be SSDT, PSDT or OEMx",
-                            table_desc->pointer->signature));
+        if (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_PSDT)&&
+            !ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)&&
+            strncmp(table_desc->pointer->signature, "OEM", 3)) {
+                /* Check for a printable name */
+                if (acpi_ut_valid_acpi_name(
+                        *(u32 *) table_desc->pointer->signature)) {
+                        ACPI_ERROR((AE_INFO, "Table has invalid signature "
+                                        "[%4.4s], must be SSDT or PSDT",
+                                    table_desc->pointer->signature));
+                } else {
+                        ACPI_ERROR((AE_INFO, "Table has invalid signature "
+                                        "(0x%8.8X), must be SSDT or PSDT",
+                                    *(u32 *) table_desc->pointer->signature));
+                }
                 return_ACPI_STATUS(AE_BAD_SIGNATURE);
         }
 
@@ -162,6 +169,7 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc,
 
                 acpi_tb_delete_table(table_desc);
                 *table_index = i;
+                status = AE_ALREADY_EXISTS;
                 goto release;
         }
 
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index 010f19652f80..bc019b9b6a68 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -212,7 +212,7 @@ acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
 
         if (checksum) {
                 ACPI_WARNING((AE_INFO,
-                              "Incorrect checksum in table [%4.4s] -  %2.2X, should be %2.2X",
+                              "Incorrect checksum in table [%4.4s] - %2.2X, should be %2.2X",
                               table->signature, table->checksum,
                               (u8) (table->checksum - checksum)));
 
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index a9e3331fee5d..fb57b93c2495 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -635,6 +635,95 @@ acpi_status acpi_load_tables(void)
 ACPI_EXPORT_SYMBOL(acpi_load_tables)
 
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_install_table_handler
+ *
+ * PARAMETERS:  Handler         - Table event handler
+ *              Context         - Value passed to the handler on each event
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install table event handler
+ *
+ ******************************************************************************/
+acpi_status
+acpi_install_table_handler(acpi_tbl_handler handler, void *context)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_install_table_handler);
+
+        if (!handler) {
+                return_ACPI_STATUS(AE_BAD_PARAMETER);
+        }
+
+        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* Don't allow more than one handler */
+
+        if (acpi_gbl_table_handler) {
+                status = AE_ALREADY_EXISTS;
+                goto cleanup;
+        }
+
+        /* Install the handler */
+
+        acpi_gbl_table_handler = handler;
+        acpi_gbl_table_handler_context = context;
+
+      cleanup:
+        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_remove_table_handler
+ *
+ * PARAMETERS:  Handler         - Table event handler that was installed
+ *                                previously.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Remove table event handler
+ *
+ ******************************************************************************/
+acpi_status acpi_remove_table_handler(acpi_tbl_handler handler)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_remove_table_handler);
+
+        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        /* Make sure that the installed handler is the same */
+
+        if (!handler || handler != acpi_gbl_table_handler) {
+                status = AE_BAD_PARAMETER;
+                goto cleanup;
+        }
+
+        /* Remove the handler */
+
+        acpi_gbl_table_handler = NULL;
+
+      cleanup:
+        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_remove_table_handler)
+
+
 static int __init acpi_no_auto_ssdt_setup(char *s) {
 
         printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index 9ecb4b6c1e7d..b8c0dfa084f6 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2007, R. Byron Moore
+ * Copyright (C) 2000 - 2008, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without