ACPICA: Fix unmerged utility divergences.

Utility improvements in ACPICA are partial ignored by ACPICA Linux
release.  This will lead to divergences between Linux and ACPICA.
This patch ports the entire "utility" into Linux and makes them
igored in the compilation stage by "ACPI_FUTURE_USAGE".
The following "Utility" files have been ported into the Linux:
  drivers/acpi/uttrack.c
  drivers/acpi/utcache.c
  drivers/acpi/utids.c

This patch will not affect the generated vmlinx binary.
This will decrease 274 lines of 20120913 divergence.diff.

Signed-off-by: Robert Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 87 insertions, 12 deletions

diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index d91d88d..0fed4bc 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -41,8 +41,6 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-#include <linux/module.h>
-
 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "acnamesp.h"
@@ -201,8 +199,8 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
 				 */
 				acpi_gbl_owner_id_mask[j] |= (1 << k);
 
-				acpi_gbl_last_owner_id_index = (u8) j;
-				acpi_gbl_next_owner_id_offset = (u8) (k + 1);
+				acpi_gbl_last_owner_id_index = (u8)j;
+				acpi_gbl_next_owner_id_offset = (u8)(k + 1);
 
 				/*
 				 * Construct encoded ID from the index and bit position
@@ -339,6 +337,73 @@ void acpi_ut_strupr(char *src_string)
 	return;
 }
 
+#ifdef ACPI_ASL_COMPILER
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strlwr (strlwr)
+ *
+ * PARAMETERS:  src_string      - The source string to convert
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert string to lowercase
+ *
+ * NOTE: This is not a POSIX function, so it appears here, not in utclib.c
+ *
+ ******************************************************************************/
+
+void acpi_ut_strlwr(char *src_string)
+{
+	char *string;
+
+	ACPI_FUNCTION_ENTRY();
+
+	if (!src_string) {
+		return;
+	}
+
+	/* Walk entire string, lowercasing the letters */
+
+	for (string = src_string; *string; string++) {
+		*string = (char)ACPI_TOLOWER(*string);
+	}
+
+	return;
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_stricmp
+ *
+ * PARAMETERS:  string1             - first string to compare
+ *              string2             - second string to compare
+ *
+ * RETURN:      int that signifies string relationship. Zero means strings
+ *              are equal.
+ *
+ * DESCRIPTION: Implementation of the non-ANSI stricmp function (compare
+ *              strings with no case sensitivity)
+ *
+ ******************************************************************************/
+
+int acpi_ut_stricmp(char *string1, char *string2)
+{
+	int c1;
+	int c2;
+
+	do {
+		c1 = tolower((int)*string1);
+		c2 = tolower((int)*string2);
+
+		string1++;
+		string2++;
+	}
+	while ((c1 == c2) && (c1));
+
+	return (c1 - c2);
+}
+#endif
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ut_print_string
@@ -638,7 +703,16 @@ u8 acpi_ut_valid_acpi_name(u32 name)
  * RETURN:      Repaired version of the name
  *
  * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
- *              return the new name.
+ *              return the new name. NOTE: the Name parameter must reside in
+ *              read/write memory, cannot be a const.
+ *
+ * An ACPI 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.
  *
  ******************************************************************************/
 
@@ -699,7 +773,7 @@ void acpi_ut_repair_name(char *name)
  *
  ******************************************************************************/
 
-acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 * ret_integer)
+acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
 {
 	u32 this_digit = 0;
 	u64 return_value = 0;
@@ -772,14 +846,14 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 * ret_integer)
 
 			/* Convert ASCII 0-9 to Decimal value */
 
-			this_digit = ((u8) * string) - '0';
+			this_digit = ((u8)*string) - '0';
 		} else if (base == 10) {
 
 			/* Digit is out of range; possible in to_integer case only */
 
 			term = 1;
 		} else {
-			this_digit = (u8) ACPI_TOUPPER(*string);
+			this_digit = (u8)ACPI_TOUPPER(*string);
 			if (ACPI_IS_XDIGIT((char)this_digit)) {
 
 				/* Convert ASCII Hex char to value */
@@ -806,8 +880,9 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 * ret_integer)
 
 		valid_digits++;
 
-		if (sign_of0x && ((valid_digits > 16)
-				  || ((valid_digits > 8) && mode32))) {
+		if (sign_of0x
+		    && ((valid_digits > 16)
+			|| ((valid_digits > 8) && mode32))) {
 			/*
 			 * This is to_integer operation case.
 			 * No any restrictions for string-to-integer conversion,
@@ -818,7 +893,7 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 * ret_integer)
 
 		/* Divide the digit into the correct position */
 
-		(void)acpi_ut_short_divide((dividend - (u64) this_digit),
+		(void)acpi_ut_short_divide((dividend - (u64)this_digit),
 					   base, &quotient, NULL);
 
 		if (return_value > quotient) {
@@ -908,7 +983,7 @@ acpi_ut_create_update_state_and_push(union acpi_operand_object *object,
  ******************************************************************************/
 
 acpi_status
-acpi_ut_walk_package_tree(union acpi_operand_object * source_object,
+acpi_ut_walk_package_tree(union acpi_operand_object *source_object,
 			  void *target_object,
 			  acpi_pkg_callback walk_callback, void *context)
 {