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path: root/drivers/acpi/executer/exnames.c
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Diffstat (limited to 'drivers/acpi/executer/exnames.c')
-rw-r--r--drivers/acpi/executer/exnames.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/acpi/executer/exnames.c b/drivers/acpi/executer/exnames.c
index 054fe5e1a314..d3d70364626c 100644
--- a/drivers/acpi/executer/exnames.c
+++ b/drivers/acpi/executer/exnames.c
@@ -77,7 +77,7 @@ static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
77 char *name_string; 77 char *name_string;
78 u32 size_needed; 78 u32 size_needed;
79 79
80 ACPI_FUNCTION_TRACE("ex_allocate_name_string"); 80 ACPI_FUNCTION_TRACE(ex_allocate_name_string);
81 81
82 /* 82 /*
83 * Allow room for all \ and ^ prefixes, all segments and a multi_name_prefix. 83 * Allow room for all \ and ^ prefixes, all segments and a multi_name_prefix.
@@ -85,6 +85,7 @@ static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
85 * This may actually be somewhat longer than needed. 85 * This may actually be somewhat longer than needed.
86 */ 86 */
87 if (prefix_count == ACPI_UINT32_MAX) { 87 if (prefix_count == ACPI_UINT32_MAX) {
88
88 /* Special case for root */ 89 /* Special case for root */
89 90
90 size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1; 91 size_needed = 1 + (ACPI_NAME_SIZE * num_name_segs) + 2 + 1;
@@ -97,7 +98,7 @@ static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
97 * Allocate a buffer for the name. 98 * Allocate a buffer for the name.
98 * This buffer must be deleted by the caller! 99 * This buffer must be deleted by the caller!
99 */ 100 */
100 name_string = ACPI_MEM_ALLOCATE(size_needed); 101 name_string = ACPI_ALLOCATE(size_needed);
101 if (!name_string) { 102 if (!name_string) {
102 ACPI_ERROR((AE_INFO, 103 ACPI_ERROR((AE_INFO,
103 "Could not allocate size %d", size_needed)); 104 "Could not allocate size %d", size_needed));
@@ -119,11 +120,13 @@ static char *acpi_ex_allocate_name_string(u32 prefix_count, u32 num_name_segs)
119 /* Set up Dual or Multi prefixes if needed */ 120 /* Set up Dual or Multi prefixes if needed */
120 121
121 if (num_name_segs > 2) { 122 if (num_name_segs > 2) {
123
122 /* Set up multi prefixes */ 124 /* Set up multi prefixes */
123 125
124 *temp_ptr++ = AML_MULTI_NAME_PREFIX_OP; 126 *temp_ptr++ = AML_MULTI_NAME_PREFIX_OP;
125 *temp_ptr++ = (char)num_name_segs; 127 *temp_ptr++ = (char)num_name_segs;
126 } else if (2 == num_name_segs) { 128 } else if (2 == num_name_segs) {
129
127 /* Set up dual prefixes */ 130 /* Set up dual prefixes */
128 131
129 *temp_ptr++ = AML_DUAL_NAME_PREFIX; 132 *temp_ptr++ = AML_DUAL_NAME_PREFIX;
@@ -159,7 +162,7 @@ static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
159 u32 index; 162 u32 index;
160 char char_buf[5]; 163 char char_buf[5];
161 164
162 ACPI_FUNCTION_TRACE("ex_name_segment"); 165 ACPI_FUNCTION_TRACE(ex_name_segment);
163 166
164 /* 167 /*
165 * If first character is a digit, then we know that we aren't looking at a 168 * If first character is a digit, then we know that we aren't looking at a
@@ -176,7 +179,7 @@ static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
176 179
177 for (index = 0; 180 for (index = 0;
178 (index < ACPI_NAME_SIZE) 181 (index < ACPI_NAME_SIZE)
179 && (acpi_ut_valid_acpi_character(*aml_address)); index++) { 182 && (acpi_ut_valid_acpi_char(*aml_address, 0)); index++) {
180 char_buf[index] = *aml_address++; 183 char_buf[index] = *aml_address++;
181 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "%c\n", char_buf[index])); 184 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "%c\n", char_buf[index]));
182 } 185 }
@@ -184,6 +187,7 @@ static acpi_status acpi_ex_name_segment(u8 ** in_aml_address, char *name_string)
184 /* Valid name segment */ 187 /* Valid name segment */
185 188
186 if (index == 4) { 189 if (index == 4) {
190
187 /* Found 4 valid characters */ 191 /* Found 4 valid characters */
188 192
189 char_buf[4] = '\0'; 193 char_buf[4] = '\0';
@@ -249,11 +253,12 @@ acpi_ex_get_name_string(acpi_object_type data_type,
249 u32 prefix_count = 0; 253 u32 prefix_count = 0;
250 u8 has_prefix = FALSE; 254 u8 has_prefix = FALSE;
251 255
252 ACPI_FUNCTION_TRACE_PTR("ex_get_name_string", aml_address); 256 ACPI_FUNCTION_TRACE_PTR(ex_get_name_string, aml_address);
253 257
254 if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type || 258 if (ACPI_TYPE_LOCAL_REGION_FIELD == data_type ||
255 ACPI_TYPE_LOCAL_BANK_FIELD == data_type || 259 ACPI_TYPE_LOCAL_BANK_FIELD == data_type ||
256 ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) { 260 ACPI_TYPE_LOCAL_INDEX_FIELD == data_type) {
261
257 /* Disallow prefixes for types associated with field_unit names */ 262 /* Disallow prefixes for types associated with field_unit names */
258 263
259 name_string = acpi_ex_allocate_name_string(0, 1); 264 name_string = acpi_ex_allocate_name_string(0, 1);
@@ -272,7 +277,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
272 case AML_ROOT_PREFIX: 277 case AML_ROOT_PREFIX:
273 278
274 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, 279 ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
275 "root_prefix(\\) at %p\n", 280 "RootPrefix(\\) at %p\n",
276 aml_address)); 281 aml_address));
277 282
278 /* 283 /*
@@ -290,7 +295,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
290 295
291 do { 296 do {
292 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, 297 ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
293 "parent_prefix (^) at %p\n", 298 "ParentPrefix (^) at %p\n",
294 aml_address)); 299 aml_address));
295 300
296 aml_address++; 301 aml_address++;
@@ -314,7 +319,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
314 case AML_DUAL_NAME_PREFIX: 319 case AML_DUAL_NAME_PREFIX:
315 320
316 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, 321 ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
317 "dual_name_prefix at %p\n", 322 "DualNamePrefix at %p\n",
318 aml_address)); 323 aml_address));
319 324
320 aml_address++; 325 aml_address++;
@@ -341,7 +346,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
341 case AML_MULTI_NAME_PREFIX_OP: 346 case AML_MULTI_NAME_PREFIX_OP:
342 347
343 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, 348 ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
344 "multi_name_prefix at %p\n", 349 "MultiNamePrefix at %p\n",
345 aml_address)); 350 aml_address));
346 351
347 /* Fetch count of segments remaining in name path */ 352 /* Fetch count of segments remaining in name path */
@@ -377,7 +382,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
377 382
378 if (prefix_count == ACPI_UINT32_MAX) { 383 if (prefix_count == ACPI_UINT32_MAX) {
379 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, 384 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
380 "name_seg is \"\\\" followed by NULL\n")); 385 "NameSeg is \"\\\" followed by NULL\n"));
381 } 386 }
382 387
383 /* Consume the NULL byte */ 388 /* Consume the NULL byte */
@@ -410,6 +415,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
410 } 415 }
411 416
412 if (AE_CTRL_PENDING == status && has_prefix) { 417 if (AE_CTRL_PENDING == status && has_prefix) {
418
413 /* Ran out of segments after processing a prefix */ 419 /* Ran out of segments after processing a prefix */
414 420
415 ACPI_ERROR((AE_INFO, "Malformed Name at %p", name_string)); 421 ACPI_ERROR((AE_INFO, "Malformed Name at %p", name_string));
@@ -418,7 +424,7 @@ acpi_ex_get_name_string(acpi_object_type data_type,
418 424
419 if (ACPI_FAILURE(status)) { 425 if (ACPI_FAILURE(status)) {
420 if (name_string) { 426 if (name_string) {
421 ACPI_MEM_FREE(name_string); 427 ACPI_FREE(name_string);
422 } 428 }
423 return_ACPI_STATUS(status); 429 return_ACPI_STATUS(status);
424 } 430 }