diff options
Diffstat (limited to 'drivers/acpi/utilities/utmisc.c')
| -rw-r--r-- | drivers/acpi/utilities/utmisc.c | 31 |
1 files changed, 6 insertions, 25 deletions
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c index 7364f5f8c9c..60f36130663 100644 --- a/drivers/acpi/utilities/utmisc.c +++ b/drivers/acpi/utilities/utmisc.c @@ -97,6 +97,7 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id) for (k = acpi_gbl_next_owner_id_offset; k < 32; k++) { if (acpi_gbl_owner_id_mask[j] == ACPI_UINT32_MAX) { + /* There are no free IDs in this mask */ break; @@ -273,6 +274,7 @@ void acpi_ut_print_string(char *string, u8 max_length) acpi_os_printf("\""); for (i = 0; string[i] && (i < max_length); i++) { + /* Escape sequences */ switch (string[i]) { @@ -601,11 +603,13 @@ acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) while (*string) { if (ACPI_IS_DIGIT(*string)) { + /* Convert ASCII 0-9 to Decimal value */ this_digit = ((u8) * string) - '0'; } else { if (base == 10) { + /* Digit is out of range */ goto error_exit; @@ -613,6 +617,7 @@ acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) this_digit = (u8) ACPI_TOUPPER(*string); if (ACPI_IS_XDIGIT((char)this_digit)) { + /* Convert ASCII Hex char to value */ this_digit = this_digit - 'A' + 10; @@ -727,6 +732,7 @@ acpi_ut_walk_package_tree(union acpi_operand_object * source_object, } while (state) { + /* Get one element of the package */ this_index = state->pkg.index; @@ -814,31 +820,6 @@ acpi_ut_walk_package_tree(union acpi_operand_object * source_object, /******************************************************************************* * - * FUNCTION: acpi_ut_generate_checksum - * - * PARAMETERS: Buffer - Buffer to be scanned - * Length - number of bytes to examine - * - * RETURN: The generated checksum - * - * DESCRIPTION: Generate a checksum on a raw buffer - * - ******************************************************************************/ - -u8 acpi_ut_generate_checksum(u8 * buffer, u32 length) -{ - u32 i; - signed char sum = 0; - - for (i = 0; i < length; i++) { - sum = (signed char)(sum + buffer[i]); - } - - return ((u8) (0 - sum)); -} - -/******************************************************************************* - * * FUNCTION: acpi_ut_error, acpi_ut_warning, acpi_ut_info * * PARAMETERS: module_name - Caller's module name (for error output) |