Merge back ACPICA changes for 6.2-rc1

20 files changed, 277 insertions, 111 deletions

diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index 59700433a96e..9e0d95d76fff 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -155,6 +155,7 @@ acpi-y +=		\
 	utalloc.o	\
 	utascii.o	\
 	utbuffer.o	\
+	utcksum.o	\
 	utcopy.o	\
 	utexcep.o	\
 	utdebug.o	\
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 088d6a7d052c..777457a58340 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -24,6 +24,7 @@ ACPI_GLOBAL(struct acpi_table_list, acpi_gbl_root_table_list);
 
 ACPI_GLOBAL(struct acpi_table_header *, acpi_gbl_DSDT);
 ACPI_GLOBAL(struct acpi_table_header, acpi_gbl_original_dsdt_header);
+ACPI_INIT_GLOBAL(char *, acpi_gbl_CDAT, NULL);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_dsdt_index, ACPI_INVALID_TABLE_INDEX);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_facs_index, ACPI_INVALID_TABLE_INDEX);
 ACPI_INIT_GLOBAL(u32, acpi_gbl_xfacs_index, ACPI_INVALID_TABLE_INDEX);
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index f8d7bfd737df..1c29325e4c7f 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -124,11 +124,6 @@ void
 acpi_tb_print_table_header(acpi_physical_address address,
 			   struct acpi_table_header *header);
 
-u8 acpi_tb_checksum(u8 *buffer, u32 length);
-
-acpi_status
-acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length);
-
 void acpi_tb_check_dsdt_header(void);
 
 struct acpi_table_header *acpi_tb_copy_dsdt(u32 table_index);
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 6e6270f96bfb..71175b664f49 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -159,6 +159,19 @@ u8 acpi_ut_valid_name_char(char character, u32 position);
 void acpi_ut_check_and_repair_ascii(u8 *name, char *repaired_name, u32 count);
 
 /*
+ * utcksum - Checksum utilities
+ */
+u8 acpi_ut_generate_checksum(void *table, u32 length, u8 original_checksum);
+
+u8 acpi_ut_checksum(u8 *buffer, u32 length);
+
+acpi_status
+acpi_ut_verify_cdat_checksum(struct acpi_table_cdat *cdat_table, u32 length);
+
+acpi_status
+acpi_ut_verify_checksum(struct acpi_table_header *table, u32 length);
+
+/*
  * utnonansi - Non-ANSI C library functions
  */
 void acpi_ut_strupr(char *src_string);
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index ae2e768830bf..9332bc688713 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -517,7 +517,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 	info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
 	if (!info) {
 		status = AE_NO_MEMORY;
-		goto cleanup;
+		goto pop_walk_state;
 	}
 
 	info->parameters = &this_walk_state->operands[0];
@@ -529,7 +529,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 
 	ACPI_FREE(info);
 	if (ACPI_FAILURE(status)) {
-		goto cleanup;
+		goto pop_walk_state;
 	}
 
 	next_walk_state->method_nesting_depth =
@@ -575,6 +575,12 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 
 	return_ACPI_STATUS(status);
 
+pop_walk_state:
+
+	/* On error, pop the walk state to be deleted from thread */
+
+	acpi_ds_pop_walk_state(thread);
+
 cleanup:
 
 	/* On error, we must terminate the method properly */
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index df596d46dd97..82d1728b9bc6 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -142,6 +142,9 @@ static acpi_status acpi_ev_fixed_event_initialize(void)
 			status =
 			    acpi_write_bit_register(acpi_gbl_fixed_event_info
 						    [i].enable_register_id,
+						    (i ==
+						     ACPI_EVENT_PCIE_WAKE) ?
+						    ACPI_ENABLE_EVENT :
 						    ACPI_DISABLE_EVENT);
 			if (ACPI_FAILURE(status)) {
 				return (status);
@@ -185,6 +188,11 @@ u32 acpi_ev_fixed_event_detect(void)
 		return (int_status);
 	}
 
+	if (fixed_enable & ACPI_BITMASK_PCIEXP_WAKE_DISABLE)
+		fixed_enable &= ~ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
+	else
+		fixed_enable |= ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
+
 	ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
 			  "Fixed Event Block: Enable %08X Status %08X\n",
 			  fixed_enable, fixed_status));
@@ -250,6 +258,9 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
 	if (!acpi_gbl_fixed_event_handlers[event].handler) {
 		(void)acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
 					      enable_register_id,
+					      (event ==
+					       ACPI_EVENT_PCIE_WAKE) ?
+					      ACPI_ENABLE_EVENT :
 					      ACPI_DISABLE_EVENT);
 
 		ACPI_ERROR((AE_INFO,
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index b96b3a7e78e5..d035092799eb 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -172,6 +172,15 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
 			ctx->subspace_id = (u8)region_obj->region.address;
 		}
 
+		if (region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE) {
+			struct acpi_ffh_info *ctx =
+			    handler_desc->address_space.context;
+
+			ctx->length = region_obj->region.length;
+			ctx->offset = region_obj->region.address;
+		}
+
 		/*
 		 * We must exit the interpreter because the region setup will
 		 * potentially execute control methods (for example, the _REG method
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index d7d74ef87b18..e82faabdf907 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -295,8 +295,8 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
 						 target));
 	}
 	if (target->common.type != ACPI_TYPE_INTEGER) {
-		ACPI_EXCEPTION((AE_INFO, AE_TYPE,
-				"Type not integer: %X\n", target->common.type));
+		ACPI_ERROR((AE_INFO, "Type not integer: %X",
+			    target->common.type));
 		return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 	}
 
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index 2b89a496de65..657f4002f9dc 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -141,7 +141,9 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state,
 		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI
 		    || obj_desc->field.region_obj->region.space_id ==
-		    ACPI_ADR_SPACE_PLATFORM_RT)) {
+		    ACPI_ADR_SPACE_PLATFORM_RT
+		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE)) {
 
 		/* SMBus, GSBus, IPMI serial */
 
@@ -305,7 +307,9 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
 		    || obj_desc->field.region_obj->region.space_id ==
 		    ACPI_ADR_SPACE_IPMI
 		    || obj_desc->field.region_obj->region.space_id ==
-		    ACPI_ADR_SPACE_PLATFORM_RT)) {
+		    ACPI_ADR_SPACE_PLATFORM_RT
+		    || obj_desc->field.region_obj->region.space_id ==
+		    ACPI_ADR_SPACE_FIXED_HARDWARE)) {
 
 		/* SMBus, GSBus, IPMI serial */
 
diff --git a/drivers/acpi/acpica/exserial.c b/drivers/acpi/acpica/exserial.c
index 4da20d7845df..fd63f2042514 100644
--- a/drivers/acpi/acpica/exserial.c
+++ b/drivers/acpi/acpica/exserial.c
@@ -323,6 +323,12 @@ acpi_ex_write_serial_bus(union acpi_operand_object *source_desc,
 		function = ACPI_WRITE;
 		break;
 
+	case ACPI_ADR_SPACE_FIXED_HARDWARE:
+
+		buffer_length = ACPI_FFH_INPUT_BUFFER_SIZE;
+		function = ACPI_WRITE;
+		break;
+
 	default:
 		return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
 	}
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index bd936476dda9..37b3f641feaa 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -311,6 +311,20 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state)
 				    [ACPI_EVENT_SLEEP_BUTTON].
 				    status_register_id, ACPI_CLEAR_STATUS);
 
+	/* Enable pcie wake event if support */
+	if ((acpi_gbl_FADT.flags & ACPI_FADT_PCI_EXPRESS_WAKE)) {
+		(void)
+		    acpi_write_bit_register(acpi_gbl_fixed_event_info
+					    [ACPI_EVENT_PCIE_WAKE].
+					    enable_register_id,
+					    ACPI_DISABLE_EVENT);
+		(void)
+		    acpi_write_bit_register(acpi_gbl_fixed_event_info
+					    [ACPI_EVENT_PCIE_WAKE].
+					    status_register_id,
+					    ACPI_CLEAR_STATUS);
+	}
+
 	acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index a7642b34ce48..1f7677e0dbbe 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -522,7 +522,7 @@ acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc,
 		/* Verify the checksum */
 
 		status =
-		    acpi_tb_verify_checksum(table_desc->pointer,
+		    acpi_ut_verify_checksum(table_desc->pointer,
 					    table_desc->length);
 		if (ACPI_FAILURE(status)) {
 			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 31d7ea84a360..f04dc6051320 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -298,7 +298,7 @@ void acpi_tb_parse_fadt(void)
 	 * Validate the FADT checksum before we copy the table. Ignore
 	 * checksum error as we want to try to get the DSDT and FACS.
 	 */
-	(void)acpi_tb_verify_checksum(table, length);
+	(void)acpi_ut_verify_checksum(table, length);
 
 	/* Create a local copy of the FADT in common ACPI 2.0+ format */
 
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index 595547db28c0..f07aa9b46f3f 100644
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -10,6 +10,7 @@
 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "actables.h"
+#include "acutils.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbprint")
@@ -39,7 +40,7 @@ static void acpi_tb_fix_string(char *string, acpi_size length)
 {
 
 	while (length && *string) {
-		if (!isprint((int)*string)) {
+		if (!isprint((int)(u8)*string)) {
 			*string = '?';
 		}
 
@@ -135,77 +136,3 @@ acpi_tb_print_table_header(acpi_physical_address address,
 			   local_header.asl_compiler_revision));
 	}
 }
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_tb_validate_checksum
- *
- * PARAMETERS:  table               - ACPI table to verify
- *              length              - Length of entire table
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
- *              exception on bad checksum.
- *
- ******************************************************************************/
-
-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_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
-	    ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
-		return (AE_OK);
-	}
-
-	/* Compute the checksum on the table */
-
-	checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
-
-	/* Checksum ok? (should be zero) */
-
-	if (checksum) {
-		ACPI_BIOS_WARNING((AE_INFO,
-				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
-				   "should be 0x%2.2X",
-				   table->signature, table->checksum,
-				   (u8)(table->checksum - checksum)));
-
-#if (ACPI_CHECKSUM_ABORT)
-		return (AE_BAD_CHECKSUM);
-#endif
-	}
-
-	return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_tb_checksum
- *
- * PARAMETERS:  buffer          - Pointer to memory region to be checked
- *              length          - Length of this memory region
- *
- * RETURN:      Checksum (u8)
- *
- * DESCRIPTION: Calculates circular checksum of memory region.
- *
- ******************************************************************************/
-
-u8 acpi_tb_checksum(u8 *buffer, u32 length)
-{
-	u8 sum = 0;
-	u8 *end = buffer + length;
-
-	while (buffer < end) {
-		sum = (u8)(sum + *(buffer++));
-	}
-
-	return (sum);
-}
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 633a823be65f..17ad9c227d42 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -299,7 +299,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
 
 	/* Validate the root table checksum */
 
-	status = acpi_tb_verify_checksum(table, length);
+	status = acpi_ut_verify_checksum(table, length);
 	if (ACPI_FAILURE(status)) {
 		acpi_os_unmap_memory(table, length);
 		return_ACPI_STATUS(status);
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 3d09e3f6bd43..53afd75bbc06 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -74,14 +74,14 @@ acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
 
 	/* Check the standard checksum */
 
-	if (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+	if (acpi_ut_checksum((u8 *)rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
 		return (AE_BAD_CHECKSUM);
 	}
 
 	/* Check extended checksum if table version >= 2 */
 
 	if ((rsdp->revision >= 2) &&
-	    (acpi_tb_checksum((u8 *) rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
+	    (acpi_ut_checksum((u8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
 		return (AE_BAD_CHECKSUM);
 	}
 
@@ -114,6 +114,7 @@ acpi_find_root_pointer(acpi_physical_address *table_address)
 	u8 *table_ptr;
 	u8 *mem_rover;
 	u32 physical_address;
+	u32 ebda_window_size;
 
 	ACPI_FUNCTION_TRACE(acpi_find_root_pointer);
 
@@ -139,26 +140,37 @@ acpi_find_root_pointer(acpi_physical_address *table_address)
 
 	/* EBDA present? */
 
-	if (physical_address > 0x400) {
+	/*
+	 * Check that the EBDA pointer from memory is sane and does not point
+	 * above valid low memory
+	 */
+	if (physical_address > 0x400 && physical_address < 0xA0000) {
+		/*
+		 * Calculate the scan window size
+		 * The EBDA is not guaranteed to be larger than a ki_b and in case
+		 * that it is smaller, the scanning function would leave the low
+		 * memory and continue to the VGA range.
+		 */
+		ebda_window_size = ACPI_MIN(ACPI_EBDA_WINDOW_SIZE,
+					    0xA0000 - physical_address);
+
 		/*
-		 * 1b) Search EBDA paragraphs (EBDA is required to be a
-		 *     minimum of 1K length)
+		 * 1b) Search EBDA paragraphs
 		 */
 		table_ptr = acpi_os_map_memory((acpi_physical_address)
 					       physical_address,
-					       ACPI_EBDA_WINDOW_SIZE);
+					       ebda_window_size);
 		if (!table_ptr) {
 			ACPI_ERROR((AE_INFO,
 				    "Could not map memory at 0x%8.8X for length %u",
-				    physical_address, ACPI_EBDA_WINDOW_SIZE));
+				    physical_address, ebda_window_size));
 
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
 
 		mem_rover =
-		    acpi_tb_scan_memory_for_rsdp(table_ptr,
-						 ACPI_EBDA_WINDOW_SIZE);
-		acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);
+		    acpi_tb_scan_memory_for_rsdp(table_ptr, ebda_window_size);
+		acpi_os_unmap_memory(table_ptr, ebda_window_size);
 
 		if (mem_rover) {
 
diff --git a/drivers/acpi/acpica/utcksum.c b/drivers/acpi/acpica/utcksum.c
new file mode 100644
index 000000000000..c166e4c05ab6
--- /dev/null
+++ b/drivers/acpi/acpica/utcksum.c
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: utcksum - Support generating table checksums
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acutils.h"
+
+/* This module used for application-level code only */
+
+#define _COMPONENT          ACPI_CA_DISASSEMBLER
+ACPI_MODULE_NAME("utcksum")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_verify_checksum
+ *
+ * PARAMETERS:  table               - ACPI table to verify
+ *              length              - Length of entire table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
+ *              exception on bad checksum.
+ *              Note: We don't have to check for a CDAT here, since CDAT is
+ *              not in the RSDT/XSDT, and the CDAT table is never installed
+ *              via ACPICA.
+ *
+ ******************************************************************************/
+acpi_status acpi_ut_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_NAMESEG(table->signature, ACPI_SIG_S3PT) ||
+	    ACPI_COMPARE_NAMESEG(table->signature, ACPI_SIG_FACS)) {
+		return (AE_OK);
+	}
+
+	/* Compute the checksum on the table */
+
+	length = table->length;
+	checksum =
+	    acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, table), length,
+				      table->checksum);
+
+	/* Computed checksum matches table? */
+
+	if (checksum != table->checksum) {
+		ACPI_BIOS_WARNING((AE_INFO,
+				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+				   "should be 0x%2.2X",
+				   table->signature, table->checksum,
+				   table->checksum - checksum));
+
+#if (ACPI_CHECKSUM_ABORT)
+		return (AE_BAD_CHECKSUM);
+#endif
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_verify_cdat_checksum
+ *
+ * PARAMETERS:  table               - CDAT ACPI table to verify
+ *              length              - Length of entire table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Verifies that the CDAT table checksums to zero. Optionally
+ *              returns an exception on bad checksum.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_verify_cdat_checksum(struct acpi_table_cdat *cdat_table, u32 length)
+{
+	u8 checksum;
+
+	/* Compute the checksum on the table */
+
+	checksum = acpi_ut_generate_checksum(ACPI_CAST_PTR(u8, cdat_table),
+					     cdat_table->length,
+					     cdat_table->checksum);
+
+	/* Computed checksum matches table? */
+
+	if (checksum != cdat_table->checksum) {
+		ACPI_BIOS_WARNING((AE_INFO,
+				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+				   "should be 0x%2.2X",
+				   acpi_gbl_CDAT, cdat_table->checksum,
+				   checksum));
+
+#if (ACPI_CHECKSUM_ABORT)
+		return (AE_BAD_CHECKSUM);
+#endif
+	}
+
+	cdat_table->checksum = checksum;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_generate_checksum
+ *
+ * PARAMETERS:  table               - Pointer to table to be checksummed
+ *              length              - Length of the table
+ *              original_checksum   - Value of the checksum field
+ *
+ * RETURN:      8 bit checksum of buffer
+ *
+ * DESCRIPTION: Computes an 8 bit checksum of the table.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_generate_checksum(void *table, u32 length, u8 original_checksum)
+{
+	u8 checksum;
+
+	/* Sum the entire table as-is */
+
+	checksum = acpi_ut_checksum((u8 *)table, length);
+
+	/* Subtract off the existing checksum value in the table */
+
+	checksum = (u8)(checksum - original_checksum);
+
+	/* Compute and return the final checksum */
+
+	checksum = (u8)(0 - checksum);
+	return (checksum);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_checksum
+ *
+ * PARAMETERS:  buffer          - Pointer to memory region to be checked
+ *              length          - Length of this memory region
+ *
+ * RETURN:      Checksum (u8)
+ *
+ * DESCRIPTION: Calculates circular checksum of memory region.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_checksum(u8 *buffer, u32 length)
+{
+	u8 sum = 0;
+	u8 *end = buffer + length;
+
+	while (buffer < end) {
+		sum = (u8)(sum + *(buffer++));
+	}
+
+	return (sum);
+}
diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index 400b9e15a709..63c17f420fb8 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -916,13 +916,6 @@ acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj,
 	status = acpi_ut_walk_package_tree(source_obj, dest_obj,
 					   acpi_ut_copy_ielement_to_ielement,
 					   walk_state);
-	if (ACPI_FAILURE(status)) {
-
-		/* On failure, delete the destination package object */
-
-		acpi_ut_remove_reference(dest_obj);
-	}
-
 	return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index cda6e16dddf7..53afa5edb6ec 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -186,6 +186,10 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] =
 					ACPI_BITREG_RT_CLOCK_ENABLE,
 					ACPI_BITMASK_RT_CLOCK_STATUS,
 					ACPI_BITMASK_RT_CLOCK_ENABLE},
+	/* ACPI_EVENT_PCIE_WAKE     */ {ACPI_BITREG_PCIEXP_WAKE_STATUS,
+					ACPI_BITREG_PCIEXP_WAKE_DISABLE,
+					ACPI_BITMASK_PCIEXP_WAKE_STATUS,
+					ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 };
 #endif				/* !ACPI_REDUCED_HARDWARE */
 
diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
index c39b5483045d..aae71b8c55d2 100644
--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -145,7 +145,7 @@ void acpi_ut_repair_name(char *name)
 		return;
 	}
 
-	ACPI_COPY_NAMESEG(&original_name, name);
+	ACPI_COPY_NAMESEG(&original_name, &name[0]);
 
 	/* Check each character in the name */
 
@@ -156,10 +156,10 @@ void acpi_ut_repair_name(char *name)
 
 		/*
 		 * Replace a bad character with something printable, yet technically
-		 * still invalid. This prevents any collisions with existing "good"
+		 * "odd". This prevents any collisions with existing "good"
 		 * names in the namespace.
 		 */
-		name[i] = '*';
+		name[i] = '_';
 		found_bad_char = TRUE;
 	}
 
@@ -169,8 +169,8 @@ void acpi_ut_repair_name(char *name)
 
 		if (!acpi_gbl_enable_interpreter_slack) {
 			ACPI_WARNING((AE_INFO,
-				      "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
-				      original_name, name));
+				      "Invalid character(s) in name (0x%.8X) %p, repaired: [%4.4s]",
+				      original_name, name, &name[0]));
 		} else {
 			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 					  "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",