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path: root/drivers/acpi/dispatcher/dsfield.c
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Diffstat (limited to 'drivers/acpi/dispatcher/dsfield.c')
-rw-r--r--drivers/acpi/dispatcher/dsfield.c58
1 files changed, 37 insertions, 21 deletions
diff --git a/drivers/acpi/dispatcher/dsfield.c b/drivers/acpi/dispatcher/dsfield.c
index 2779211be756..84193983d6ba 100644
--- a/drivers/acpi/dispatcher/dsfield.c
+++ b/drivers/acpi/dispatcher/dsfield.c
@@ -53,13 +53,20 @@
53#define _COMPONENT ACPI_DISPATCHER 53#define _COMPONENT ACPI_DISPATCHER
54 ACPI_MODULE_NAME ("dsfield") 54 ACPI_MODULE_NAME ("dsfield")
55 55
56/* Local prototypes */
57
58static acpi_status
59acpi_ds_get_field_names (
60 struct acpi_create_field_info *info,
61 struct acpi_walk_state *walk_state,
62 union acpi_parse_object *arg);
63
56 64
57/******************************************************************************* 65/*******************************************************************************
58 * 66 *
59 * FUNCTION: acpi_ds_create_buffer_field 67 * FUNCTION: acpi_ds_create_buffer_field
60 * 68 *
61 * PARAMETERS: Opcode - The opcode to be executed 69 * PARAMETERS: Op - Current parse op (create_xXField)
62 * Operands - List of operands for the opcode
63 * walk_state - Current state 70 * walk_state - Current state
64 * 71 *
65 * RETURN: Status 72 * RETURN: Status
@@ -70,7 +77,7 @@
70 * create_word_field_op, 77 * create_word_field_op,
71 * create_dword_field_op, 78 * create_dword_field_op,
72 * create_qword_field_op, 79 * create_qword_field_op,
73 * create_field_op (all of which define fields in buffers) 80 * create_field_op (all of which define a field in a buffer)
74 * 81 *
75 ******************************************************************************/ 82 ******************************************************************************/
76 83
@@ -119,7 +126,8 @@ acpi_ds_create_buffer_field (
119 flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE; 126 flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE;
120 } 127 }
121 else { 128 else {
122 flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND; 129 flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
130 ACPI_NS_ERROR_IF_FOUND;
123 } 131 }
124 132
125 /* 133 /*
@@ -134,16 +142,16 @@ acpi_ds_create_buffer_field (
134 } 142 }
135 } 143 }
136 144
137 /* We could put the returned object (Node) on the object stack for later, but 145 /* We could put the returned object (Node) on the object stack for later,
138 * for now, we will put it in the "op" object that the parser uses, so we 146 * but for now, we will put it in the "op" object that the parser uses,
139 * can get it again at the end of this scope 147 * so we can get it again at the end of this scope
140 */ 148 */
141 op->common.node = node; 149 op->common.node = node;
142 150
143 /* 151 /*
144 * If there is no object attached to the node, this node was just created and 152 * If there is no object attached to the node, this node was just created
145 * we need to create the field object. Otherwise, this was a lookup of an 153 * and we need to create the field object. Otherwise, this was a lookup
146 * existing node and we don't want to create the field object again. 154 * of an existing node and we don't want to create the field object again.
147 */ 155 */
148 obj_desc = acpi_ns_get_attached_object (node); 156 obj_desc = acpi_ns_get_attached_object (node);
149 if (obj_desc) { 157 if (obj_desc) {
@@ -205,7 +213,7 @@ cleanup:
205 * 213 *
206 ******************************************************************************/ 214 ******************************************************************************/
207 215
208acpi_status 216static acpi_status
209acpi_ds_get_field_names ( 217acpi_ds_get_field_names (
210 struct acpi_create_field_info *info, 218 struct acpi_create_field_info *info,
211 struct acpi_walk_state *walk_state, 219 struct acpi_walk_state *walk_state,
@@ -238,7 +246,8 @@ acpi_ds_get_field_names (
238 + (acpi_integer) arg->common.value.size; 246 + (acpi_integer) arg->common.value.size;
239 247
240 if (position > ACPI_UINT32_MAX) { 248 if (position > ACPI_UINT32_MAX) {
241 ACPI_REPORT_ERROR (("Bit offset within field too large (> 0xFFFFFFFF)\n")); 249 ACPI_REPORT_ERROR ((
250 "Bit offset within field too large (> 0xFFFFFFFF)\n"));
242 return_ACPI_STATUS (AE_SUPPORT); 251 return_ACPI_STATUS (AE_SUPPORT);
243 } 252 }
244 253
@@ -250,12 +259,15 @@ acpi_ds_get_field_names (
250 259
251 /* 260 /*
252 * Get a new access_type and access_attribute -- to be used for all 261 * Get a new access_type and access_attribute -- to be used for all
253 * field units that follow, until field end or another access_as keyword. 262 * field units that follow, until field end or another access_as
263 * keyword.
254 * 264 *
255 * In field_flags, preserve the flag bits other than the ACCESS_TYPE bits 265 * In field_flags, preserve the flag bits other than the
266 * ACCESS_TYPE bits
256 */ 267 */
257 info->field_flags = (u8) ((info->field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | 268 info->field_flags = (u8)
258 ((u8) ((u32) arg->common.value.integer >> 8))); 269 ((info->field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
270 ((u8) ((u32) arg->common.value.integer >> 8)));
259 271
260 info->attribute = (u8) (arg->common.value.integer); 272 info->attribute = (u8) (arg->common.value.integer);
261 break; 273 break;
@@ -267,7 +279,8 @@ acpi_ds_get_field_names (
267 279
268 status = acpi_ns_lookup (walk_state->scope_info, 280 status = acpi_ns_lookup (walk_state->scope_info,
269 (char *) &arg->named.name, 281 (char *) &arg->named.name,
270 info->field_type, ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, 282 info->field_type, ACPI_IMODE_EXECUTE,
283 ACPI_NS_DONT_OPEN_SCOPE,
271 walk_state, &info->field_node); 284 walk_state, &info->field_node);
272 if (ACPI_FAILURE (status)) { 285 if (ACPI_FAILURE (status)) {
273 ACPI_REPORT_NSERROR ((char *) &arg->named.name, status); 286 ACPI_REPORT_NSERROR ((char *) &arg->named.name, status);
@@ -295,8 +308,9 @@ acpi_ds_get_field_names (
295 + (acpi_integer) arg->common.value.size; 308 + (acpi_integer) arg->common.value.size;
296 309
297 if (position > ACPI_UINT32_MAX) { 310 if (position > ACPI_UINT32_MAX) {
298 ACPI_REPORT_ERROR (("Field [%4.4s] bit offset too large (> 0xFFFFFFFF)\n", 311 ACPI_REPORT_ERROR ((
299 (char *) &info->field_node->name)); 312 "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)\n",
313 (char *) &info->field_node->name));
300 return_ACPI_STATUS (AE_SUPPORT); 314 return_ACPI_STATUS (AE_SUPPORT);
301 } 315 }
302 316
@@ -306,7 +320,8 @@ acpi_ds_get_field_names (
306 320
307 default: 321 default:
308 322
309 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid opcode in field list: %X\n", 323 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
324 "Invalid opcode in field list: %X\n",
310 arg->common.aml_opcode)); 325 arg->common.aml_opcode));
311 return_ACPI_STATUS (AE_AML_BAD_OPCODE); 326 return_ACPI_STATUS (AE_AML_BAD_OPCODE);
312 } 327 }
@@ -435,7 +450,8 @@ acpi_ds_init_field_objects (
435 status = acpi_ns_lookup (walk_state->scope_info, 450 status = acpi_ns_lookup (walk_state->scope_info,
436 (char *) &arg->named.name, 451 (char *) &arg->named.name,
437 type, ACPI_IMODE_LOAD_PASS1, 452 type, ACPI_IMODE_LOAD_PASS1,
438 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, 453 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
454 ACPI_NS_ERROR_IF_FOUND,
439 walk_state, &node); 455 walk_state, &node);
440 if (ACPI_FAILURE (status)) { 456 if (ACPI_FAILURE (status)) {
441 ACPI_REPORT_NSERROR ((char *) &arg->named.name, status); 457 ACPI_REPORT_NSERROR ((char *) &arg->named.name, status);