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path: root/drivers/acpi/namespace/nswalk.c
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Diffstat (limited to 'drivers/acpi/namespace/nswalk.c')
-rw-r--r--drivers/acpi/namespace/nswalk.c105
1 files changed, 50 insertions, 55 deletions
diff --git a/drivers/acpi/namespace/nswalk.c b/drivers/acpi/namespace/nswalk.c
index f9a7277dca6e..5f164c0df33b 100644
--- a/drivers/acpi/namespace/nswalk.c
+++ b/drivers/acpi/namespace/nswalk.c
@@ -41,14 +41,11 @@
41 * POSSIBILITY OF SUCH DAMAGES. 41 * POSSIBILITY OF SUCH DAMAGES.
42 */ 42 */
43 43
44
45#include <acpi/acpi.h> 44#include <acpi/acpi.h>
46#include <acpi/acnamesp.h> 45#include <acpi/acnamesp.h>
47 46
48
49#define _COMPONENT ACPI_NAMESPACE 47#define _COMPONENT ACPI_NAMESPACE
50 ACPI_MODULE_NAME ("nswalk") 48ACPI_MODULE_NAME("nswalk")
51
52 49
53/******************************************************************************* 50/*******************************************************************************
54 * 51 *
@@ -68,18 +65,15 @@
68 * within Scope is returned. 65 * within Scope is returned.
69 * 66 *
70 ******************************************************************************/ 67 ******************************************************************************/
71 68struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type,
72struct acpi_namespace_node * 69 struct acpi_namespace_node
73acpi_ns_get_next_node ( 70 *parent_node,
74 acpi_object_type type, 71 struct acpi_namespace_node
75 struct acpi_namespace_node *parent_node, 72 *child_node)
76 struct acpi_namespace_node *child_node)
77{ 73{
78 struct acpi_namespace_node *next_node = NULL; 74 struct acpi_namespace_node *next_node = NULL;
79
80
81 ACPI_FUNCTION_ENTRY ();
82 75
76 ACPI_FUNCTION_ENTRY();
83 77
84 if (!child_node) { 78 if (!child_node) {
85 /* It's really the parent's _scope_ that we want */ 79 /* It's really the parent's _scope_ that we want */
@@ -92,7 +86,7 @@ acpi_ns_get_next_node (
92 else { 86 else {
93 /* Start search at the NEXT node */ 87 /* Start search at the NEXT node */
94 88
95 next_node = acpi_ns_get_next_valid_node (child_node); 89 next_node = acpi_ns_get_next_valid_node(child_node);
96 } 90 }
97 91
98 /* If any type is OK, we are done */ 92 /* If any type is OK, we are done */
@@ -114,7 +108,7 @@ acpi_ns_get_next_node (
114 108
115 /* Otherwise, move on to the next node */ 109 /* Otherwise, move on to the next node */
116 110
117 next_node = acpi_ns_get_next_valid_node (next_node); 111 next_node = acpi_ns_get_next_valid_node(next_node);
118 } 112 }
119 113
120 /* Not found */ 114 /* Not found */
@@ -122,7 +116,6 @@ acpi_ns_get_next_node (
122 return (NULL); 116 return (NULL);
123} 117}
124 118
125
126/******************************************************************************* 119/*******************************************************************************
127 * 120 *
128 * FUNCTION: acpi_ns_walk_namespace 121 * FUNCTION: acpi_ns_walk_namespace
@@ -154,25 +147,21 @@ acpi_ns_get_next_node (
154 ******************************************************************************/ 147 ******************************************************************************/
155 148
156acpi_status 149acpi_status
157acpi_ns_walk_namespace ( 150acpi_ns_walk_namespace(acpi_object_type type,
158 acpi_object_type type, 151 acpi_handle start_node,
159 acpi_handle start_node, 152 u32 max_depth,
160 u32 max_depth, 153 u8 unlock_before_callback,
161 u8 unlock_before_callback, 154 acpi_walk_callback user_function,
162 acpi_walk_callback user_function, 155 void *context, void **return_value)
163 void *context,
164 void **return_value)
165{ 156{
166 acpi_status status; 157 acpi_status status;
167 acpi_status mutex_status; 158 acpi_status mutex_status;
168 struct acpi_namespace_node *child_node; 159 struct acpi_namespace_node *child_node;
169 struct acpi_namespace_node *parent_node; 160 struct acpi_namespace_node *parent_node;
170 acpi_object_type child_type; 161 acpi_object_type child_type;
171 u32 level; 162 u32 level;
172
173
174 ACPI_FUNCTION_TRACE ("ns_walk_namespace");
175 163
164 ACPI_FUNCTION_TRACE("ns_walk_namespace");
176 165
177 /* Special case for the namespace Root Node */ 166 /* Special case for the namespace Root Node */
178 167
@@ -183,9 +172,9 @@ acpi_ns_walk_namespace (
183 /* Null child means "get first node" */ 172 /* Null child means "get first node" */
184 173
185 parent_node = start_node; 174 parent_node = start_node;
186 child_node = NULL; 175 child_node = NULL;
187 child_type = ACPI_TYPE_ANY; 176 child_type = ACPI_TYPE_ANY;
188 level = 1; 177 level = 1;
189 178
190 /* 179 /*
191 * Traverse the tree of nodes until we bubble back up to where we 180 * Traverse the tree of nodes until we bubble back up to where we
@@ -196,7 +185,9 @@ acpi_ns_walk_namespace (
196 /* Get the next node in this scope. Null if not found */ 185 /* Get the next node in this scope. Null if not found */
197 186
198 status = AE_OK; 187 status = AE_OK;
199 child_node = acpi_ns_get_next_node (ACPI_TYPE_ANY, parent_node, child_node); 188 child_node =
189 acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node,
190 child_node);
200 if (child_node) { 191 if (child_node) {
201 /* 192 /*
202 * Found node, Get the type if we are not 193 * Found node, Get the type if we are not
@@ -212,19 +203,25 @@ acpi_ns_walk_namespace (
212 * callback function 203 * callback function
213 */ 204 */
214 if (unlock_before_callback) { 205 if (unlock_before_callback) {
215 mutex_status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); 206 mutex_status =
216 if (ACPI_FAILURE (mutex_status)) { 207 acpi_ut_release_mutex
217 return_ACPI_STATUS (mutex_status); 208 (ACPI_MTX_NAMESPACE);
209 if (ACPI_FAILURE(mutex_status)) {
210 return_ACPI_STATUS
211 (mutex_status);
218 } 212 }
219 } 213 }
220 214
221 status = user_function (child_node, level, 215 status = user_function(child_node, level,
222 context, return_value); 216 context, return_value);
223 217
224 if (unlock_before_callback) { 218 if (unlock_before_callback) {
225 mutex_status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); 219 mutex_status =
226 if (ACPI_FAILURE (mutex_status)) { 220 acpi_ut_acquire_mutex
227 return_ACPI_STATUS (mutex_status); 221 (ACPI_MTX_NAMESPACE);
222 if (ACPI_FAILURE(mutex_status)) {
223 return_ACPI_STATUS
224 (mutex_status);
228 } 225 }
229 } 226 }
230 227
@@ -239,13 +236,13 @@ acpi_ns_walk_namespace (
239 236
240 /* Exit now, with OK status */ 237 /* Exit now, with OK status */
241 238
242 return_ACPI_STATUS (AE_OK); 239 return_ACPI_STATUS(AE_OK);
243 240
244 default: 241 default:
245 242
246 /* All others are valid exceptions */ 243 /* All others are valid exceptions */
247 244
248 return_ACPI_STATUS (status); 245 return_ACPI_STATUS(status);
249 } 246 }
250 } 247 }
251 248
@@ -258,7 +255,8 @@ acpi_ns_walk_namespace (
258 * maximum depth has been reached. 255 * maximum depth has been reached.
259 */ 256 */
260 if ((level < max_depth) && (status != AE_CTRL_DEPTH)) { 257 if ((level < max_depth) && (status != AE_CTRL_DEPTH)) {
261 if (acpi_ns_get_next_node (ACPI_TYPE_ANY, child_node, NULL)) { 258 if (acpi_ns_get_next_node
259 (ACPI_TYPE_ANY, child_node, NULL)) {
262 /* 260 /*
263 * There is at least one child of this 261 * There is at least one child of this
264 * node, visit the onde 262 * node, visit the onde
@@ -268,8 +266,7 @@ acpi_ns_walk_namespace (
268 child_node = NULL; 266 child_node = NULL;
269 } 267 }
270 } 268 }
271 } 269 } else {
272 else {
273 /* 270 /*
274 * No more children of this node (acpi_ns_get_next_node 271 * No more children of this node (acpi_ns_get_next_node
275 * failed), go back upwards in the namespace tree to 272 * failed), go back upwards in the namespace tree to
@@ -277,13 +274,11 @@ acpi_ns_walk_namespace (
277 */ 274 */
278 level--; 275 level--;
279 child_node = parent_node; 276 child_node = parent_node;
280 parent_node = acpi_ns_get_parent_node (parent_node); 277 parent_node = acpi_ns_get_parent_node(parent_node);
281 } 278 }
282 } 279 }
283 280
284 /* Complete walk, not terminated by user function */ 281 /* Complete walk, not terminated by user function */
285 282
286 return_ACPI_STATUS (AE_OK); 283 return_ACPI_STATUS(AE_OK);
287} 284}
288
289
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 06:33:06 -0500