ACPI: ACPICA 20060331

Implemented header file support for the following
additional ACPI tables: ASF!, BOOT, CPEP, DBGP, MCFG, SPCR,
SPMI, TCPA, and WDRT. With this support, all current and
known ACPI tables are now defined in the ACPICA headers and
are available for use by device drivers and other software.

Implemented support to allow tables that contain ACPI
names with invalid characters to be loaded. Previously,
this would cause the table load to fail, but since
there are several known cases of such tables on
existing machines, this change was made to enable
ACPI support for them. Also, this matches the
behavior of the Microsoft ACPI implementation.
https://bugzilla.novell.com/show_bug.cgi?id=147621

Fixed a couple regressions introduced during the memory
optimization in the 20060317 release. The namespace
node definition required additional reorganization and
an internal datatype that had been changed to 8-bit was
restored to 32-bit. (Valery Podrezov)

Fixed a problem where a null pointer passed to
acpi_ut_delete_generic_state() could be passed through
to acpi_os_release_object which is unexpected. Such
null pointers are now trapped and ignored, matching
the behavior of the previous implementation before the
deployment of acpi_os_release_object().  (Valery Podrezov,
Fiodor Suietov)

Fixed a memory mapping leak during the deletion of
a SystemMemory operation region where a cached memory
mapping was not deleted. This became a noticeable problem
for operation regions that are defined within frequently
used control methods. (Dana Meyers)

Reorganized the ACPI table header files into two main
files: one for the ACPI tables consumed by the ACPICA core,
and another for the miscellaneous ACPI tables that are
consumed by the drivers and other software. The various
FADT definitions were merged into one common section and
three different tables (ACPI 1.0, 1.0+, and 2.0)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

26 files changed, 329 insertions, 133 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 9c4ac0191f64..b3a214db56f6 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -43,7 +43,7 @@ ACPI_MODULE_NAME("acpi_bus")
 extern void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger);
 #endif
 
-FADT_DESCRIPTOR acpi_fadt;
+struct fadt_descriptor acpi_fadt;
 EXPORT_SYMBOL(acpi_fadt);
 
 struct acpi_device *acpi_root;
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index 238916ce5412..7dc59fc7344f 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -502,7 +502,7 @@ void acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state)
 	 * Delete any namespace entries created immediately underneath
 	 * the method
 	 */
-	if (method_node->child) {
+	if (method_node && method_node->child) {
 		acpi_ns_delete_namespace_subtree(method_node);
 	}
 
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 198949f41048..8b740b370eb1 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -49,7 +49,6 @@
 #include <acpi/acinterp.h>
 #include <acpi/acnamesp.h>
 #include <acpi/acdebug.h>
-#include <acpi/acdisasm.h>
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dswexec")
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index db98747fe54d..d1809f4240a4 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -75,7 +75,18 @@ acpi_ev_system_memory_region_setup(acpi_handle handle,
 
 	if (function == ACPI_REGION_DEACTIVATE) {
 		if (*region_context) {
-			ACPI_FREE(*region_context);
+			local_region_context =
+			    (struct acpi_mem_space_context *)*region_context;
+
+			/* Delete a cached mapping if present */
+
+			if (local_region_context->mapped_length) {
+				acpi_os_unmap_memory(local_region_context->
+						     mapped_logical_address,
+						     local_region_context->
+						     mapped_length);
+			}
+			ACPI_FREE(local_region_context);
 			*region_context = NULL;
 		}
 		return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index 56db58b8e23a..1dfebf9e7074 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -61,6 +61,10 @@ static void acpi_ex_out_pointer(char *title, void *value);
 
 static void acpi_ex_out_address(char *title, acpi_physical_address value);
 
+static void
+acpi_ex_dump_object(union acpi_operand_object *obj_desc,
+		    struct acpi_exdump_info *info);
+
 static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc);
 
 static void
@@ -263,7 +267,7 @@ static struct acpi_exdump_info acpi_ex_dump_field_common[7] = {
 	{ACPI_EXD_POINTER, ACPI_EXD_OFFSET(common_field.node), "Parent Node"}
 };
 
-static struct acpi_exdump_info acpi_ex_dump_node[6] = {
+static struct acpi_exdump_info acpi_ex_dump_node[5] = {
 	{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_node), NULL},
 	{ACPI_EXD_UINT8, ACPI_EXD_NSOFFSET(flags), "Flags"},
 	{ACPI_EXD_UINT8, ACPI_EXD_NSOFFSET(owner_id), "Owner Id"},
diff --git a/drivers/acpi/executer/exnames.c b/drivers/acpi/executer/exnames.c
index 80bbc20756a1..085b18f8dd00 100644
--- a/drivers/acpi/executer/exnames.c
+++ b/drivers/acpi/executer/exnames.c
@@ -179,7 +179,7 @@ static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
 
 	for (index = 0;
 	     (index < ACPI_NAME_SIZE)
-	     && (acpi_ut_valid_acpi_character(*aml_address)); index++) {
+	     && (acpi_ut_valid_acpi_char(*aml_address, 0)); index++) {
 		char_buf[index] = *aml_address++;
 		ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "%c\n", char_buf[index]));
 	}
diff --git a/drivers/acpi/hardware/hwtimer.c b/drivers/acpi/hardware/hwtimer.c
index 9d53e46bc331..a559ac17b132 100644
--- a/drivers/acpi/hardware/hwtimer.c
+++ b/drivers/acpi/hardware/hwtimer.c
@@ -66,7 +66,7 @@ acpi_status acpi_get_timer_resolution(u32 * resolution)
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	if (0 == acpi_gbl_FADT->tmr_val_ext) {
+	if (acpi_gbl_FADT->tmr_val_ext == 0) {
 		*resolution = 24;
 	} else {
 		*resolution = 32;
@@ -153,7 +153,7 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed)
 	if (start_ticks < end_ticks) {
 		delta_ticks = end_ticks - start_ticks;
 	} else if (start_ticks > end_ticks) {
-		if (0 == acpi_gbl_FADT->tmr_val_ext) {
+		if (acpi_gbl_FADT->tmr_val_ext == 0) {
 
 			/* 24-bit Timer */
 
diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/namespace/nsalloc.c
index 8b921c96d6a5..c92c03693a16 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/namespace/nsalloc.c
@@ -211,6 +211,8 @@ void acpi_ns_install_node(struct acpi_walk_state *walk_state, struct acpi_namesp
 			  acpi_ut_get_node_name(parent_node),
 			  acpi_ut_get_type_name(parent_node->type),
 			  parent_node));
+
+	return_VOID;
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/namespace/nsdump.c b/drivers/acpi/namespace/nsdump.c
index e275373b1705..5662d2def62f 100644
--- a/drivers/acpi/namespace/nsdump.c
+++ b/drivers/acpi/namespace/nsdump.c
@@ -204,6 +204,9 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
 		}
 
 		if (!acpi_ut_valid_acpi_name(this_node->name.integer)) {
+			this_node->name.integer =
+			    acpi_ut_repair_name(this_node->name.integer);
+
 			ACPI_WARNING((AE_INFO, "Invalid ACPI Name %08X",
 				      this_node->name.integer));
 		}
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index c929f45071c0..51adec5a23d6 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -128,9 +128,8 @@ acpi_ns_search_node(u32 target_name,
 						  next_node->object);
 			}
 
-			/*
-			 * Found matching entry.
-			 */
+			/* Found matching entry */
+
 			ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
 					  "Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
 					  ACPI_CAST_PTR(char, &target_name),
@@ -248,10 +247,8 @@ acpi_ns_search_parent_tree(u32 target_name,
 			return_ACPI_STATUS(status);
 		}
 
-		/*
-		 * Not found here, go up another level
-		 * (until we reach the root)
-		 */
+		/* Not found here, go up another level (until we reach the root) */
+
 		parent_node = acpi_ns_get_parent_node(parent_node);
 	}
 
@@ -307,12 +304,29 @@ acpi_ns_search_and_enter(u32 target_name,
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
-	/* Name must consist of printable characters */
-
+	/*
+	 * Name must consist of valid ACPI characters. We will repair the name if
+	 * necessary because we don't want to abort because of this, but we want
+	 * all namespace names to be printable. A warning message is appropriate.
+	 *
+	 * This issue came up because there are in fact machines that exhibit
+	 * this problem, and we want to be able to enable ACPI support for them,
+	 * even though there are a few bad names.
+	 */
 	if (!acpi_ut_valid_acpi_name(target_name)) {
-		ACPI_ERROR((AE_INFO, "Bad character in ACPI Name: %X",
-			    target_name));
-		return_ACPI_STATUS(AE_BAD_CHARACTER);
+		target_name = acpi_ut_repair_name(target_name);
+
+		/* Report warning only if in strict mode or debug mode */
+
+		if (!acpi_gbl_enable_interpreter_slack) {
+			ACPI_WARNING((AE_INFO,
+				      "Found bad character(s) in name, repaired: [%4.4s]\n",
+				      ACPI_CAST_PTR(char, &target_name)));
+		} else {
+			ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+					  "Found bad character(s) in name, repaired: [%4.4s]\n",
+					  ACPI_CAST_PTR(char, &target_name)));
+		}
 	}
 
 	/* Try to find the name in the namespace level specified by the caller */
@@ -328,10 +342,8 @@ acpi_ns_search_and_enter(u32 target_name,
 			status = AE_ALREADY_EXISTS;
 		}
 
-		/*
-		 * Either found it or there was an error
-		 * -- finished either way
-		 */
+		/* Either found it or there was an error: finished either way */
+
 		return_ACPI_STATUS(status);
 	}
 
@@ -357,9 +369,8 @@ acpi_ns_search_and_enter(u32 target_name,
 		}
 	}
 
-	/*
-	 * In execute mode, just search, never add names.  Exit now.
-	 */
+	/* In execute mode, just search, never add names. Exit now */
+
 	if (interpreter_mode == ACPI_IMODE_EXECUTE) {
 		ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
 				  "%4.4s Not found in %p [Not adding]\n",
@@ -379,6 +390,5 @@ acpi_ns_search_and_enter(u32 target_name,
 
 	acpi_ns_install_node(walk_state, node, new_node, type);
 	*return_node = new_node;
-
 	return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c
index 14052cb648c1..3a29ce680370 100644
--- a/drivers/acpi/parser/psloop.c
+++ b/drivers/acpi/parser/psloop.c
@@ -747,7 +747,19 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 					if (ACPI_FAILURE(status2)) {
 						return_ACPI_STATUS(status2);
 					}
+
+					status2 =
+					    acpi_ds_result_stack_pop
+					    (walk_state);
+					if (ACPI_FAILURE(status2)) {
+						return_ACPI_STATUS(status2);
+					}
+
+					acpi_ut_delete_generic_state
+					    (acpi_ut_pop_generic_state
+					     (&walk_state->control_state));
 				}
+
 				acpi_ps_pop_scope(parser_state, &op,
 						  &walk_state->arg_types,
 						  &walk_state->arg_count);
diff --git a/drivers/acpi/parser/psscope.c b/drivers/acpi/parser/psscope.c
index 9233a4044d6b..424ab1c20da5 100644
--- a/drivers/acpi/parser/psscope.c
+++ b/drivers/acpi/parser/psscope.c
@@ -143,7 +143,7 @@ acpi_ps_init_scope(struct acpi_parse_state * parser_state,
 acpi_status
 acpi_ps_push_scope(struct acpi_parse_state *parser_state,
 		   union acpi_parse_object *op,
-		   u32 remaining_args, u8 arg_count)
+		   u32 remaining_args, u32 arg_count)
 {
 	union acpi_generic_state *scope;
 
@@ -196,7 +196,7 @@ acpi_ps_push_scope(struct acpi_parse_state *parser_state,
 
 void
 acpi_ps_pop_scope(struct acpi_parse_state *parser_state,
-		  union acpi_parse_object **op, u32 * arg_list, u8 * arg_count)
+		  union acpi_parse_object **op, u32 * arg_list, u32 * arg_count)
 {
 	union acpi_generic_state *scope = parser_state->scope;
 
diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/resources/rslist.c
index 50bbb19bf4ae..1b2d1e717e74 100644
--- a/drivers/acpi/resources/rslist.c
+++ b/drivers/acpi/resources/rslist.c
@@ -64,10 +64,11 @@ ACPI_MODULE_NAME("rslist")
 acpi_status
 acpi_rs_convert_aml_to_resources(u8 * aml,
 				 u32 length,
-				 u32 offset,
-				 u8 resource_index, void **resource_ptr)
+				 u32 offset, u8 resource_index, void **context)
 {
-	struct acpi_resource *resource = *resource_ptr;
+	struct acpi_resource **resource_ptr =
+	    ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
+	struct acpi_resource *resource;
 	acpi_status status;
 
 	ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources");
@@ -76,6 +77,7 @@ acpi_rs_convert_aml_to_resources(u8 * aml,
 	 * Check that the input buffer and all subsequent pointers into it
 	 * are aligned on a native word boundary. Most important on IA64
 	 */
+	resource = *resource_ptr;
 	if (ACPI_IS_MISALIGNED(resource)) {
 		ACPI_WARNING((AE_INFO,
 			      "Misaligned resource pointer %p", resource));
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index e4308c7a6743..1943bec18848 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -39,7 +39,7 @@ ACPI_MODULE_NAME("acpi_system")
 #define ACPI_SYSTEM_FILE_EVENT		"event"
 #define ACPI_SYSTEM_FILE_DSDT		"dsdt"
 #define ACPI_SYSTEM_FILE_FADT		"fadt"
-extern FADT_DESCRIPTOR acpi_fadt;
+extern struct fadt_descriptor acpi_fadt;
 
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 7f37c7cc5ef1..ed5e8816d83d 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -282,8 +282,8 @@ acpi_get_table_header_early(enum acpi_table_id id,
 
 	/* Map the DSDT header via the pointer in the FADT */
 	if (id == ACPI_DSDT) {
-		struct fadt_descriptor_rev2 *fadt =
-		    (struct fadt_descriptor_rev2 *)*header;
+		struct fadt_descriptor *fadt =
+		    (struct fadt_descriptor *)*header;
 
 		if (fadt->revision == 3 && fadt->Xdsdt) {
 			*header = (void *)__acpi_map_table(fadt->Xdsdt,
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c
index 5155b27cf032..a913a927d321 100644
--- a/drivers/acpi/tables/tbconvrt.c
+++ b/drivers/acpi/tables/tbconvrt.c
@@ -54,12 +54,12 @@ acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
 			     acpi_physical_address address);
 
 static void
-acpi_tb_convert_fadt1(struct fadt_descriptor_rev2 *local_fadt,
+acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt,
 		      struct fadt_descriptor_rev1 *original_fadt);
 
 static void
-acpi_tb_convert_fadt2(struct fadt_descriptor_rev2 *local_fadt,
-		      struct fadt_descriptor_rev2 *original_fadt);
+acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt,
+		      struct fadt_descriptor *original_fadt);
 
 u8 acpi_fadt_is_v1;
 ACPI_EXPORT_SYMBOL(acpi_fadt_is_v1)
@@ -120,7 +120,7 @@ acpi_status acpi_tb_convert_to_xsdt(struct acpi_table_desc *table_info)
 {
 	acpi_size table_size;
 	u32 i;
-	XSDT_DESCRIPTOR *new_table;
+	struct xsdt_descriptor *new_table;
 
 	ACPI_FUNCTION_ENTRY();
 
@@ -151,12 +151,12 @@ acpi_status acpi_tb_convert_to_xsdt(struct acpi_table_desc *table_info)
 		if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
 			ACPI_STORE_ADDRESS(new_table->table_offset_entry[i],
 					   (ACPI_CAST_PTR
-					    (struct rsdt_descriptor_rev1,
+					    (struct rsdt_descriptor,
 					     table_info->pointer))->
 					   table_offset_entry[i]);
 		} else {
 			new_table->table_offset_entry[i] =
-			    (ACPI_CAST_PTR(XSDT_DESCRIPTOR,
+			    (ACPI_CAST_PTR(struct xsdt_descriptor,
 					   table_info->pointer))->
 			    table_offset_entry[i];
 		}
@@ -218,7 +218,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
  ******************************************************************************/
 
 static void
-acpi_tb_convert_fadt1(struct fadt_descriptor_rev2 *local_fadt,
+acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt,
 		      struct fadt_descriptor_rev1 *original_fadt)
 {
 
@@ -364,14 +364,13 @@ acpi_tb_convert_fadt1(struct fadt_descriptor_rev2 *local_fadt,
  ******************************************************************************/
 
 static void
-acpi_tb_convert_fadt2(struct fadt_descriptor_rev2 *local_fadt,
-		      struct fadt_descriptor_rev2 *original_fadt)
+acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt,
+		      struct fadt_descriptor *original_fadt)
 {
 
 	/* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
 
-	ACPI_MEMCPY(local_fadt, original_fadt,
-		    sizeof(struct fadt_descriptor_rev2));
+	ACPI_MEMCPY(local_fadt, original_fadt, sizeof(struct fadt_descriptor));
 
 	/*
 	 * "X" fields are optional extensions to the original V1.0 fields, so
@@ -490,7 +489,7 @@ acpi_tb_convert_fadt2(struct fadt_descriptor_rev2 *local_fadt,
 
 acpi_status acpi_tb_convert_table_fadt(void)
 {
-	struct fadt_descriptor_rev2 *local_fadt;
+	struct fadt_descriptor *local_fadt;
 	struct acpi_table_desc *table_desc;
 
 	ACPI_FUNCTION_TRACE("tb_convert_table_fadt");
@@ -507,13 +506,13 @@ acpi_status acpi_tb_convert_table_fadt(void)
 
 	/* Allocate buffer for the ACPI 2.0(+) FADT */
 
-	local_fadt = ACPI_ALLOCATE_ZEROED(sizeof(struct fadt_descriptor_rev2));
+	local_fadt = ACPI_ALLOCATE_ZEROED(sizeof(struct fadt_descriptor));
 	if (!local_fadt) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
 	if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) {
-		if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor_rev2)) {
+		if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor)) {
 
 			/* Length is too short to be a V2.0 table */
 
@@ -538,7 +537,7 @@ acpi_status acpi_tb_convert_table_fadt(void)
 	/* Global FADT pointer will point to the new common V2.0 FADT */
 
 	acpi_gbl_FADT = local_fadt;
-	acpi_gbl_FADT->length = sizeof(FADT_DESCRIPTOR);
+	acpi_gbl_FADT->length = sizeof(struct fadt_descriptor);
 
 	/* Free the original table */
 
@@ -550,7 +549,7 @@ acpi_status acpi_tb_convert_table_fadt(void)
 	table_desc->pointer =
 	    ACPI_CAST_PTR(struct acpi_table_header, acpi_gbl_FADT);
 	table_desc->allocation = ACPI_MEM_ALLOCATED;
-	table_desc->length = sizeof(struct fadt_descriptor_rev2);
+	table_desc->length = sizeof(struct fadt_descriptor);
 
 	/* Dump the entire FADT */
 
diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
index 946d2f2d611d..9e0ebe625ed9 100644
--- a/drivers/acpi/tables/tbrsdt.c
+++ b/drivers/acpi/tables/tbrsdt.c
@@ -280,7 +280,8 @@ acpi_status acpi_tb_get_table_rsdt(void)
 		return_ACPI_STATUS(status);
 	}
 
-	acpi_gbl_XSDT = ACPI_CAST_PTR(XSDT_DESCRIPTOR, table_info.pointer);
+	acpi_gbl_XSDT =
+	    ACPI_CAST_PTR(struct xsdt_descriptor, table_info.pointer);
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "XSDT located at %p\n", acpi_gbl_XSDT));
 	return_ACPI_STATUS(status);
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index b463d4b88823..f8d28ae8811d 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -193,73 +193,119 @@ acpi_tb_validate_table_header(struct acpi_table_header *table_header)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_tb_verify_table_checksum
+ * FUNCTION:    acpi_tb_sum_table
  *
- * PARAMETERS:  *table_header           - ACPI table to verify
+ * PARAMETERS:  Buffer              - Buffer to sum
+ *              Length              - Size of the buffer
  *
- * RETURN:      8 bit checksum of table
+ * RETURN:      8 bit sum of buffer
  *
- * DESCRIPTION: Does an 8 bit checksum of table and returns status.  A correct
- *              table should have a checksum of 0.
+ * DESCRIPTION: Computes an 8 bit sum of the buffer(length) and returns it.
  *
  ******************************************************************************/
 
-acpi_status
-acpi_tb_verify_table_checksum(struct acpi_table_header * table_header)
+u8 acpi_tb_sum_table(void *buffer, u32 length)
+{
+	acpi_native_uint i;
+	u8 sum = 0;
+
+	if (!buffer || !length) {
+		return (0);
+	}
+
+	for (i = 0; i < length; i++) {
+		sum = (u8) (sum + ((u8 *) buffer)[i]);
+	}
+	return (sum);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_tb_generate_checksum
+ *
+ * PARAMETERS:  Table               - Pointer to a valid ACPI table (with a
+ *                                    standard ACPI header)
+ *
+ * RETURN:      8 bit checksum of buffer
+ *
+ * DESCRIPTION: Computes an 8 bit checksum of the table.
+ *
+ ******************************************************************************/
+
+u8 acpi_tb_generate_checksum(struct acpi_table_header * table)
 {
 	u8 checksum;
-	acpi_status status = AE_OK;
 
-	ACPI_FUNCTION_TRACE("tb_verify_table_checksum");
+	/* Sum the entire table as-is */
 
-	/* Compute the checksum on the table */
+	checksum = acpi_tb_sum_table(table, table->length);
 
-	checksum =
-	    acpi_tb_generate_checksum(table_header, table_header->length);
+	/* Subtract off the existing checksum value in the table */
 
-	/* Return the appropriate exception */
+	checksum = (u8) (checksum - table->checksum);
 
-	if (checksum) {
-		ACPI_WARNING((AE_INFO,
-			      "Invalid checksum in table [%4.4s] (%02X, sum %02X is not zero)",
-			      table_header->signature,
-			      (u32) table_header->checksum, (u32) checksum));
+	/* Compute the final checksum */
 
-		status = AE_BAD_CHECKSUM;
-	}
-	return_ACPI_STATUS(status);
+	checksum = (u8) (0 - checksum);
+	return (checksum);
 }
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_tb_generate_checksum
+ * FUNCTION:    acpi_tb_set_checksum
  *
- * PARAMETERS:  Buffer              - Buffer to checksum
- *              Length              - Size of the buffer
+ * PARAMETERS:  Table               - Pointer to a valid ACPI table (with a
+ *                                    standard ACPI header)
  *
- * RETURN:      8 bit checksum of buffer
+ * RETURN:      None. Sets the table checksum field
  *
- * DESCRIPTION: Computes an 8 bit checksum of the buffer(length) and returns it.
+ * DESCRIPTION: Computes an 8 bit checksum of the table and inserts the
+ *              checksum into the table header.
  *
  ******************************************************************************/
 
-u8 acpi_tb_generate_checksum(void *buffer, u32 length)
+void acpi_tb_set_checksum(struct acpi_table_header *table)
 {
-	u8 *end_buffer;
-	u8 *rover;
-	u8 sum = 0;
 
-	if (buffer && length) {
+	table->checksum = acpi_tb_generate_checksum(table);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_tb_verify_table_checksum
+ *
+ * PARAMETERS:  *table_header           - ACPI table to verify
+ *
+ * RETURN:      8 bit checksum of table
+ *
+ * DESCRIPTION: Generates an 8 bit checksum of table and returns and compares
+ *              it to the existing checksum value.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_tb_verify_table_checksum(struct acpi_table_header *table_header)
+{
+	u8 checksum;
+
+	ACPI_FUNCTION_TRACE("tb_verify_table_checksum");
+
+	/* Compute the checksum on the table */
 
-		/*  Buffer and Length are valid   */
+	checksum = acpi_tb_generate_checksum(table_header);
 
-		end_buffer = ACPI_ADD_PTR(u8, buffer, length);
+	/* Checksum ok? */
 
-		for (rover = buffer; rover < end_buffer; rover++) {
-			sum = (u8) (sum + *rover);
-		}
+	if (checksum == table_header->checksum) {
+		return_ACPI_STATUS(AE_OK);
 	}
-	return (sum);
+
+	ACPI_WARNING((AE_INFO,
+		      "Incorrect checksum in table [%4.4s] - is %2.2X, should be %2.2X",
+		      table_header->signature, table_header->checksum,
+		      checksum));
+
+	return_ACPI_STATUS(AE_BAD_CHECKSUM);
 }
 
 #ifdef ACPI_OBSOLETE_FUNCTIONS
@@ -278,7 +324,7 @@ u8 acpi_tb_generate_checksum(void *buffer, u32 length)
 
 acpi_status
 acpi_tb_handle_to_object(u16 table_id,
-			 struct acpi_table_desc ** return_table_desc)
+			 struct acpi_table_desc **return_table_desc)
 {
 	u32 i;
 	struct acpi_table_desc *table_desc;
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index 1b6d8c510e95..550284f5d1ed 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -81,15 +81,14 @@ acpi_status acpi_tb_validate_rsdp(struct rsdp_descriptor *rsdp)
 
 	/* Check the standard checksum */
 
-	if (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+	if (acpi_tb_sum_table(rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
 		return (AE_BAD_CHECKSUM);
 	}
 
 	/* Check extended checksum if table version >= 2 */
 
 	if ((rsdp->revision >= 2) &&
-	    (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) !=
-	     0)) {
+	    (acpi_tb_sum_table(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
 		return (AE_BAD_CHECKSUM);
 	}
 
@@ -308,12 +307,12 @@ acpi_get_firmware_table(acpi_string signature,
 		if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) {
 			address.pointer.value =
 			    (ACPI_CAST_PTR
-			     (RSDT_DESCRIPTOR,
+			     (struct rsdt_descriptor,
 			      rsdt_info->pointer))->table_offset_entry[i];
 		} else {
 			address.pointer.value =
 			    (ACPI_CAST_PTR
-			     (XSDT_DESCRIPTOR,
+			     (struct xsdt_descriptor,
 			      rsdt_info->pointer))->table_offset_entry[i];
 		}
 
diff --git a/drivers/acpi/utilities/utdebug.c b/drivers/acpi/utilities/utdebug.c
index a8c350643d57..5ec1cfcc611d 100644
--- a/drivers/acpi/utilities/utdebug.c
+++ b/drivers/acpi/utilities/utdebug.c
@@ -517,20 +517,13 @@ acpi_ut_ptr_exit(u32 line_number,
  *
  ******************************************************************************/
 
-void acpi_ut_dump_buffer(u8 * buffer, u32 count, u32 display, u32 component_id)
+void acpi_ut_dump_buffer2(u8 * buffer, u32 count, u32 display)
 {
 	acpi_native_uint i = 0;
 	acpi_native_uint j;
 	u32 temp32;
 	u8 buf_char;
 
-	/* Only dump the buffer if tracing is enabled */
-
-	if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
-	      (component_id & acpi_dbg_layer))) {
-		return;
-	}
-
 	if ((count < 4) || (count & 0x01)) {
 		display = DB_BYTE_DISPLAY;
 	}
@@ -556,6 +549,7 @@ void acpi_ut_dump_buffer(u8 * buffer, u32 count, u32 display, u32 component_id)
 			}
 
 			switch (display) {
+			case DB_BYTE_DISPLAY:
 			default:	/* Default is BYTE display */
 
 				acpi_os_printf("%02X ", buffer[i + j]);
@@ -613,3 +607,31 @@ void acpi_ut_dump_buffer(u8 * buffer, u32 count, u32 display, u32 component_id)
 
 	return;
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dump_buffer
+ *
+ * PARAMETERS:  Buffer              - Buffer to dump
+ *              Count               - Amount to dump, in bytes
+ *              Display             - BYTE, WORD, DWORD, or QWORD display
+ *              component_iD        - Caller's component ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ******************************************************************************/
+
+void acpi_ut_dump_buffer(u8 * buffer, u32 count, u32 display, u32 component_id)
+{
+
+	/* Only dump the buffer if tracing is enabled */
+
+	if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
+	      (component_id & acpi_dbg_layer))) {
+		return;
+	}
+
+	acpi_ut_dump_buffer2(buffer, count, display);
+}
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 51356e8eb999..b4e34a2f81f7 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -202,8 +202,20 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
 			if (handler_desc) {
 				if (handler_desc->address_space.handler_flags &
 				    ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
-					obj_pointer =
-					    second_desc->extra.region_context;
+
+					/* Deactivate region and free region context */
+
+					if (handler_desc->address_space.setup) {
+						(void)handler_desc->
+						    address_space.setup(object,
+									ACPI_REGION_DEACTIVATE,
+									handler_desc->
+									address_space.
+									context,
+									&second_desc->
+									extra.
+									region_context);
+					}
 				}
 
 				acpi_ut_remove_reference(handler_desc);
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 8a05bb5ef4fe..e8ae417c9848 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -642,7 +642,7 @@ char *acpi_ut_get_node_name(void *object)
 	/* Name must be a valid ACPI name */
 
 	if (!acpi_ut_valid_acpi_name(node->name.integer)) {
-		return ("????");
+		node->name.integer = acpi_ut_repair_name(node->name.integer);
 	}
 
 	/* Return the name */
diff --git a/drivers/acpi/utilities/utinit.c b/drivers/acpi/utilities/utinit.c
index 40313de6977d..7538b165b6e5 100644
--- a/drivers/acpi/utilities/utinit.c
+++ b/drivers/acpi/utilities/utinit.c
@@ -50,7 +50,7 @@ ACPI_MODULE_NAME("utinit")
 
 /* Local prototypes */
 static void
-acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset);
+acpi_ut_fadt_register_error(char *register_name, u32 value, u8 offset);
 
 static void acpi_ut_terminate(void);
 
@@ -69,12 +69,12 @@ static void acpi_ut_terminate(void);
  ******************************************************************************/
 
 static void
-acpi_ut_fadt_register_error(char *register_name, u32 value, acpi_size offset)
+acpi_ut_fadt_register_error(char *register_name, u32 value, u8 offset)
 {
 
 	ACPI_WARNING((AE_INFO,
 		      "Invalid FADT value %s=%X at offset %X FADT=%p",
-		      register_name, value, (u32) offset, acpi_gbl_FADT));
+		      register_name, value, offset, acpi_gbl_FADT));
 }
 
 /******************************************************************************
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index 017a87ebc40b..4623d7e215d3 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -49,6 +49,33 @@ ACPI_MODULE_NAME("utmisc")
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_ut_is_aml_table
+ *
+ * PARAMETERS:  Table               - An ACPI table
+ *
+ * RETURN:      TRUE if table contains executable AML; FALSE otherwise
+ *
+ * DESCRIPTION: Check ACPI Signature for a table that contains AML code.
+ *              Currently, these are DSDT,SSDT,PSDT. All other table types are
+ *              data tables that do not contain AML code.
+ *
+ ******************************************************************************/
+u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
+{
+
+	/* Ignore tables that contain AML */
+
+	if (ACPI_COMPARE_NAME(table->signature, DSDT_SIG) ||
+	    ACPI_COMPARE_NAME(table->signature, PSDT_SIG) ||
+	    ACPI_COMPARE_NAME(table->signature, SSDT_SIG)) {
+		return (TRUE);
+	}
+
+	return (FALSE);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_ut_allocate_owner_id
  *
  * PARAMETERS:  owner_id        - Where the new owner ID is returned
@@ -60,6 +87,7 @@ ACPI_MODULE_NAME("utmisc")
  *              when the method exits or the table is unloaded.
  *
  ******************************************************************************/
+
 acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
 {
 	acpi_native_uint i;
@@ -469,6 +497,41 @@ acpi_ut_display_init_pathname(u8 type,
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_ut_valid_acpi_char
+ *
+ * PARAMETERS:  Char            - The character to be examined
+ *
+ * RETURN:      TRUE if the character is valid, FALSE otherwise
+ *
+ * DESCRIPTION: Check for a valid ACPI character. Must be one of:
+ *              1) Upper case alpha
+ *              2) numeric
+ *              3) underscore
+ *
+ *              We allow a '!' as the last character because of the ASF! table
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_valid_acpi_char(char character, acpi_native_uint position)
+{
+
+	if (!((character >= 'A' && character <= 'Z') ||
+	      (character >= '0' && character <= '9') || (character == '_'))) {
+
+		/* Allow a '!' in the last position */
+
+		if (character == '!' && position == 3) {
+			return (TRUE);
+		}
+
+		return (FALSE);
+	}
+
+	return (TRUE);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_ut_valid_acpi_name
  *
  * PARAMETERS:  Name            - The name to be examined
@@ -484,19 +547,13 @@ acpi_ut_display_init_pathname(u8 type,
 
 u8 acpi_ut_valid_acpi_name(u32 name)
 {
-	char *name_ptr = (char *)&name;
-	char character;
 	acpi_native_uint i;
 
 	ACPI_FUNCTION_ENTRY();
 
 	for (i = 0; i < ACPI_NAME_SIZE; i++) {
-		character = *name_ptr;
-		name_ptr++;
-
-		if (!((character == '_') ||
-		      (character >= 'A' && character <= 'Z') ||
-		      (character >= '0' && character <= '9'))) {
+		if (!acpi_ut_valid_acpi_char
+		    ((ACPI_CAST_PTR(char, &name))[i], i)) {
 			return (FALSE);
 		}
 	}
@@ -506,24 +563,37 @@ u8 acpi_ut_valid_acpi_name(u32 name)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ut_valid_acpi_character
+ * FUNCTION:    acpi_ut_repair_name
  *
- * PARAMETERS:  Character           - The character to be examined
+ * PARAMETERS:  Name            - The ACPI name to be repaired
  *
- * RETURN:      1 if Character may appear in a name, else 0
+ * RETURN:      Repaired version of the name
  *
- * DESCRIPTION: Check for a printable character
+ * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
+ *              return the new name.
  *
  ******************************************************************************/
 
-u8 acpi_ut_valid_acpi_character(char character)
+acpi_name acpi_ut_repair_name(acpi_name name)
 {
+	char *name_ptr = ACPI_CAST_PTR(char, &name);
+	char new_name[ACPI_NAME_SIZE];
+	acpi_native_uint i;
 
-	ACPI_FUNCTION_ENTRY();
+	for (i = 0; i < ACPI_NAME_SIZE; i++) {
+		new_name[i] = name_ptr[i];
+
+		/*
+		 * Replace a bad character with something printable, yet technically
+		 * still invalid. This prevents any collisions with existing "good"
+		 * names in the namespace.
+		 */
+		if (!acpi_ut_valid_acpi_char(name_ptr[i], i)) {
+			new_name[i] = '*';
+		}
+	}
 
-	return ((u8) ((character == '_') ||
-		      (character >= 'A' && character <= 'Z') ||
-		      (character >= '0' && character <= '9')));
+	return (*ACPI_CAST_PTR(u32, new_name));
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/utilities/utresrc.c b/drivers/acpi/utilities/utresrc.c
index 4c24e6d5400a..1e680794c6df 100644
--- a/drivers/acpi/utilities/utresrc.c
+++ b/drivers/acpi/utilities/utresrc.c
@@ -258,7 +258,7 @@ static const u8 acpi_gbl_resource_types[] = {
 acpi_status
 acpi_ut_walk_aml_resources(u8 * aml,
 			   acpi_size aml_length,
-			   acpi_walk_aml_callback user_function, void *context)
+			   acpi_walk_aml_callback user_function, void **context)
 {
 	acpi_status status;
 	u8 *end_aml;
@@ -319,7 +319,7 @@ acpi_ut_walk_aml_resources(u8 * aml,
 			/* Return the pointer to the end_tag if requested */
 
 			if (!user_function) {
-				*(void **)context = aml;
+				*context = aml;
 			}
 
 			/* Normal exit */
@@ -610,7 +610,7 @@ acpi_ut_get_resource_end_tag(union acpi_operand_object * obj_desc,
 
 	status = acpi_ut_walk_aml_resources(obj_desc->buffer.pointer,
 					    obj_desc->buffer.length, NULL,
-					    end_tag);
+					    (void **)end_tag);
 
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/utilities/utstate.c b/drivers/acpi/utilities/utstate.c
index 637c5f964879..aec5034cd978 100644
--- a/drivers/acpi/utilities/utstate.c
+++ b/drivers/acpi/utilities/utstate.c
@@ -321,8 +321,8 @@ union acpi_generic_state *acpi_ut_create_control_state(void)
  *
  * RETURN:      None
  *
- * DESCRIPTION: Put a state object back into the global state cache.  The object
- *              is not actually freed at this time.
+ * DESCRIPTION: Release a state object to the state cache. NULL state objects
+ *              are ignored.
  *
  ******************************************************************************/
 
@@ -330,6 +330,10 @@ void acpi_ut_delete_generic_state(union acpi_generic_state *state)
 {
 	ACPI_FUNCTION_TRACE("ut_delete_generic_state");
 
-	(void)acpi_os_release_object(acpi_gbl_state_cache, state);
+	/* Ignore null state */
+
+	if (state) {
+		(void)acpi_os_release_object(acpi_gbl_state_cache, state);
+	}
 	return_VOID;
 }