diff options
Diffstat (limited to 'drivers/acpi/executer/exnames.c')
| -rw-r--r-- | drivers/acpi/executer/exnames.c | 236 |
1 files changed, 110 insertions, 126 deletions
diff --git a/drivers/acpi/executer/exnames.c b/drivers/acpi/executer/exnames.c index 639f0bd3f6d8..239d8473e9a5 100644 --- a/drivers/acpi/executer/exnames.c +++ b/drivers/acpi/executer/exnames.c @@ -42,26 +42,18 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acinterp.h> #include <acpi/amlcode.h> #define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exnames") +ACPI_MODULE_NAME("exnames") /* Local prototypes */ - -static char * -acpi_ex_allocate_name_string ( - u32 prefix_count, - u32 num_name_segs); +static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs); static acpi_status -acpi_ex_name_segment ( - u8 **in_aml_address, - char *name_string); - +acpi_ex_name_segment(u8 ** in_aml_address, char *name_string); /******************************************************************************* * @@ -79,17 +71,13 @@ acpi_ex_name_segment ( * ******************************************************************************/ -static char * -acpi_ex_allocate_name_string ( - u32 prefix_count, - u32 num_name_segs) +static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs) { - char *temp_ptr; - char *name_string; - u32 size_needed; - - ACPI_FUNCTION_TRACE ("ex_allocate_name_string"); + char *temp_ptr; + char *name_string; + u32 size_needed; + ACPI_FUNCTION_TRACE("ex_allocate_name_string"); /* * Allow room for all \ and ^ prefixes, all segments and a multi_name_prefix. @@ -100,20 +88,19 @@ acpi_ex_allocate_name_string ( /* Special case for root */ size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1; - } - else { - size_needed = prefix_count + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1; + } else { + size_needed = + prefix_count + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1; } /* * Allocate a buffer for the name. * This buffer must be deleted by the caller! */ - name_string = ACPI_MEM_ALLOCATE (size_needed); + name_string = ACPI_MEM_ALLOCATE(size_needed); if (!name_string) { - ACPI_REPORT_ERROR (( - "ex_allocate_name_string: Could not allocate size %d\n", size_needed)); - return_PTR (NULL); + ACPI_REPORT_ERROR(("ex_allocate_name_string: Could not allocate size %d\n", size_needed)); + return_PTR(NULL); } temp_ptr = name_string; @@ -122,23 +109,20 @@ acpi_ex_allocate_name_string ( if (prefix_count == ACPI_UINT32_MAX) { *temp_ptr++ = AML_ROOT_PREFIX; - } - else { + } else { while (prefix_count--) { *temp_ptr++ = AML_PARENT_PREFIX; } } - /* Set up Dual or Multi prefixes if needed */ if (num_name_segs > 2) { /* Set up multi prefixes */ *temp_ptr++ = AML_MULTI_NAME_PREFIX_OP; - *temp_ptr++ = (char) num_name_segs; - } - else if (2 == num_name_segs) { + *temp_ptr++ = (char)num_name_segs; + } else if (2 == num_name_segs) { /* Set up dual prefixes */ *temp_ptr++ = AML_DUAL_NAME_PREFIX; @@ -150,7 +134,7 @@ acpi_ex_allocate_name_string ( */ *temp_ptr = 0; - return_PTR (name_string); + return_PTR(name_string); } /******************************************************************************* @@ -167,19 +151,14 @@ acpi_ex_allocate_name_string ( * ******************************************************************************/ -static acpi_status -acpi_ex_name_segment ( - u8 **in_aml_address, - char *name_string) +static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string) { - char *aml_address = (void *) *in_aml_address; - acpi_status status = AE_OK; - u32 index; - char char_buf[5]; - - - ACPI_FUNCTION_TRACE ("ex_name_segment"); + char *aml_address = (void *)*in_aml_address; + acpi_status status = AE_OK; + u32 index; + char char_buf[5]; + ACPI_FUNCTION_TRACE("ex_name_segment"); /* * If first character is a digit, then we know that we aren't looking at a @@ -188,20 +167,20 @@ acpi_ex_name_segment ( char_buf[0] = *aml_address; if ('0' <= char_buf[0] && char_buf[0] <= '9') { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "leading digit: %c\n", char_buf[0])); - return_ACPI_STATUS (AE_CTRL_PENDING); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "leading digit: %c\n", + char_buf[0])); + return_ACPI_STATUS(AE_CTRL_PENDING); } - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Bytes from stream:\n")); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Bytes from stream:\n")); for (index = 0; - (index < ACPI_NAME_SIZE) && (acpi_ut_valid_acpi_character (*aml_address)); - index++) { + (index < ACPI_NAME_SIZE) + && (acpi_ut_valid_acpi_character(*aml_address)); index++) { char_buf[index] = *aml_address++; - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "%c\n", char_buf[index])); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "%c\n", char_buf[index])); } - /* Valid name segment */ if (index == 4) { @@ -210,41 +189,37 @@ acpi_ex_name_segment ( char_buf[4] = '\0'; if (name_string) { - ACPI_STRCAT (name_string, char_buf); - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, - "Appended to - %s \n", name_string)); - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, - "No Name string - %s \n", char_buf)); + ACPI_STRCAT(name_string, char_buf); + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "Appended to - %s \n", name_string)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_NAMES, + "No Name string - %s \n", char_buf)); } - } - else if (index == 0) { + } else if (index == 0) { /* * First character was not a valid name character, * so we are looking at something other than a name. */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Leading character is not alpha: %02Xh (not a name)\n", - char_buf[0])); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Leading character is not alpha: %02Xh (not a name)\n", + char_buf[0])); status = AE_CTRL_PENDING; - } - else { + } else { /* * Segment started with one or more valid characters, but fewer than * the required 4 */ status = AE_AML_BAD_NAME; - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Bad character %02x in name, at %p\n", - *aml_address, aml_address)); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Bad character %02x in name, at %p\n", + *aml_address, aml_address)); } *in_aml_address = (u8 *) aml_address; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_get_name_string @@ -263,37 +238,32 @@ acpi_ex_name_segment ( ******************************************************************************/ acpi_status -acpi_ex_get_name_string ( - acpi_object_type data_type, - u8 *in_aml_address, - char **out_name_string, - u32 *out_name_length) +acpi_ex_get_name_string(acpi_object_type data_type, + u8 * in_aml_address, + char **out_name_string, u32 * out_name_length) { - acpi_status status = AE_OK; - u8 *aml_address = in_aml_address; - char *name_string = NULL; - u32 num_segments; - u32 prefix_count = 0; - u8 has_prefix = FALSE; - - - ACPI_FUNCTION_TRACE_PTR ("ex_get_name_string", aml_address); - - - if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type || - ACPI_TYPE_LOCAL_BANK_FIELD == data_type || - ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) { + acpi_status status = AE_OK; + u8 *aml_address = in_aml_address; + char *name_string = NULL; + u32 num_segments; + u32 prefix_count = 0; + u8 has_prefix = FALSE; + + ACPI_FUNCTION_TRACE_PTR("ex_get_name_string", aml_address); + + if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type || + ACPI_TYPE_LOCAL_BANK_FIELD == data_type || + ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) { /* Disallow prefixes for types associated with field_unit names */ - name_string = acpi_ex_allocate_name_string (0, 1); + name_string = acpi_ex_allocate_name_string(0, 1); if (!name_string) { status = AE_NO_MEMORY; + } else { + status = + acpi_ex_name_segment(&aml_address, name_string); } - else { - status = acpi_ex_name_segment (&aml_address, name_string); - } - } - else { + } else { /* * data_type is not a field name. * Examine first character of name for root or parent prefix operators @@ -301,8 +271,9 @@ acpi_ex_get_name_string ( switch (*aml_address) { case AML_ROOT_PREFIX: - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "root_prefix(\\) at %p\n", - aml_address)); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, + "root_prefix(\\) at %p\n", + aml_address)); /* * Remember that we have a root_prefix -- @@ -313,14 +284,14 @@ acpi_ex_get_name_string ( has_prefix = TRUE; break; - case AML_PARENT_PREFIX: /* Increment past possibly multiple parent prefixes */ do { - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "parent_prefix (^) at %p\n", - aml_address)); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, + "parent_prefix (^) at %p\n", + aml_address)); aml_address++; prefix_count++; @@ -330,7 +301,6 @@ acpi_ex_get_name_string ( has_prefix = TRUE; break; - default: /* Not a prefix character */ @@ -343,11 +313,13 @@ acpi_ex_get_name_string ( switch (*aml_address) { case AML_DUAL_NAME_PREFIX: - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "dual_name_prefix at %p\n", - aml_address)); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, + "dual_name_prefix at %p\n", + aml_address)); aml_address++; - name_string = acpi_ex_allocate_name_string (prefix_count, 2); + name_string = + acpi_ex_allocate_name_string(prefix_count, 2); if (!name_string) { status = AE_NO_MEMORY; break; @@ -357,24 +329,29 @@ acpi_ex_get_name_string ( has_prefix = TRUE; - status = acpi_ex_name_segment (&aml_address, name_string); - if (ACPI_SUCCESS (status)) { - status = acpi_ex_name_segment (&aml_address, name_string); + status = + acpi_ex_name_segment(&aml_address, name_string); + if (ACPI_SUCCESS(status)) { + status = + acpi_ex_name_segment(&aml_address, + name_string); } break; - case AML_MULTI_NAME_PREFIX_OP: - ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "multi_name_prefix at %p\n", - aml_address)); + ACPI_DEBUG_PRINT((ACPI_DB_LOAD, + "multi_name_prefix at %p\n", + aml_address)); /* Fetch count of segments remaining in name path */ aml_address++; num_segments = *aml_address; - name_string = acpi_ex_allocate_name_string (prefix_count, num_segments); + name_string = + acpi_ex_allocate_name_string(prefix_count, + num_segments); if (!name_string) { status = AE_NO_MEMORY; break; @@ -386,27 +363,28 @@ acpi_ex_get_name_string ( has_prefix = TRUE; while (num_segments && - (status = acpi_ex_name_segment (&aml_address, name_string)) == - AE_OK) { + (status = + acpi_ex_name_segment(&aml_address, + name_string)) == AE_OK) { num_segments--; } break; - case 0: /* null_name valid as of 8-12-98 ASL/AML Grammar Update */ if (prefix_count == ACPI_UINT32_MAX) { - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, - "name_seg is \"\\\" followed by NULL\n")); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "name_seg is \"\\\" followed by NULL\n")); } /* Consume the NULL byte */ aml_address++; - name_string = acpi_ex_allocate_name_string (prefix_count, 0); + name_string = + acpi_ex_allocate_name_string(prefix_count, 0); if (!name_string) { status = AE_NO_MEMORY; break; @@ -414,18 +392,19 @@ acpi_ex_get_name_string ( break; - default: /* Name segment string */ - name_string = acpi_ex_allocate_name_string (prefix_count, 1); + name_string = + acpi_ex_allocate_name_string(prefix_count, 1); if (!name_string) { status = AE_NO_MEMORY; break; } - status = acpi_ex_name_segment (&aml_address, name_string); + status = + acpi_ex_name_segment(&aml_address, name_string); break; } } @@ -433,15 +412,20 @@ acpi_ex_get_name_string ( if (AE_CTRL_PENDING == status && has_prefix) { /* Ran out of segments after processing a prefix */ - ACPI_REPORT_ERROR ( - ("ex_do_name: Malformed Name at %p\n", name_string)); + ACPI_REPORT_ERROR(("ex_do_name: Malformed Name at %p\n", + name_string)); status = AE_AML_BAD_NAME; } + if (ACPI_FAILURE(status)) { + if (name_string) { + ACPI_MEM_FREE(name_string); + } + return_ACPI_STATUS(status); + } + *out_name_string = name_string; *out_name_length = (u32) (aml_address - in_aml_address); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - - |