diff options
Diffstat (limited to 'drivers/acpi/utilities/utmisc.c')
| -rw-r--r-- | drivers/acpi/utilities/utmisc.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c index 33268310c738..6d8a8211be90 100644 --- a/drivers/acpi/utilities/utmisc.c +++ b/drivers/acpi/utilities/utmisc.c @@ -65,7 +65,7 @@ ACPI_MODULE_NAME("utmisc") u8 acpi_ut_is_aml_table(struct acpi_table_header *table) { - /* Ignore tables that contain AML */ + /* These are the only tables that contain executable AML */ if (ACPI_COMPARE_NAME(table->signature, DSDT_SIG) || ACPI_COMPARE_NAME(table->signature, PSDT_SIG) || @@ -419,10 +419,15 @@ void acpi_ut_set_integer_width(u8 revision) { if (revision <= 1) { + + /* 32-bit case */ + acpi_gbl_integer_bit_width = 32; acpi_gbl_integer_nybble_width = 8; acpi_gbl_integer_byte_width = 4; } else { + /* 64-bit case (ACPI 2.0+) */ + acpi_gbl_integer_bit_width = 64; acpi_gbl_integer_nybble_width = 16; acpi_gbl_integer_byte_width = 8; @@ -502,6 +507,7 @@ acpi_ut_display_init_pathname(u8 type, * FUNCTION: acpi_ut_valid_acpi_char * * PARAMETERS: Char - The character to be examined + * Position - Byte position (0-3) * * RETURN: TRUE if the character is valid, FALSE otherwise * @@ -609,7 +615,9 @@ acpi_name acpi_ut_repair_name(acpi_name name) * * RETURN: Status and Converted value * - * DESCRIPTION: Convert a string into an unsigned value. + * DESCRIPTION: Convert a string into an unsigned value. Performs either a + * 32-bit or 64-bit conversion, depending on the current mode + * of the interpreter. * NOTE: Does not support Octal strings, not needed. * ******************************************************************************/ @@ -627,7 +635,7 @@ acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) u8 sign_of0x = 0; u8 term = 0; - ACPI_FUNCTION_TRACE(ut_stroul64); + ACPI_FUNCTION_TRACE_STR(ut_stroul64, string); switch (base) { case ACPI_ANY_BASE: @@ -675,11 +683,13 @@ acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) } } + /* + * Perform a 32-bit or 64-bit conversion, depending upon the current + * execution mode of the interpreter + */ dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX; - /* At least one character in the string here */ - - /* Main loop: convert the string to a 64-bit integer */ + /* Main loop: convert the string to a 32- or 64-bit integer */ while (*string) { if (ACPI_IS_DIGIT(*string)) { @@ -754,6 +764,9 @@ acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) all_done: + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n", + ACPI_FORMAT_UINT64(return_value))); + *ret_integer = return_value; return_ACPI_STATUS(AE_OK); |