ACPI: ACPICA 20060623

Implemented a new acpi_spinlock type for the OSL lock
interfaces.  This allows the type to be customized to
the host OS for improved efficiency (since a spinlock is
usually a very small object.)

Implemented support for "ignored" bits in the ACPI
registers.  According to the ACPI specification, these
bits should be preserved when writing the registers via
a read/modify/write cycle. There are 3 bits preserved
in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9],
and PM1_STATUS[11].
http://bugzilla.kernel.org/show_bug.cgi?id=3691

Implemented the initial deployment of new OSL mutex
interfaces.  Since some host operating systems have
separate mutex and semaphore objects, this feature was
requested. The base code now uses mutexes (and the new
mutex interfaces) wherever a binary semaphore was used
previously. However, for the current release, the mutex
interfaces are defined as macros to map them to the
existing semaphore interfaces.

Fixed several problems with the support for the control
method SyncLevel parameter. The SyncLevel now works
according to the ACPI specification and in concert with the
Mutex SyncLevel parameter, since the current SyncLevel is
a property of the executing thread. Mutual exclusion for
control methods is now implemented with a mutex instead
of a semaphore.

Fixed three instances of the use of the C shift operator
in the bitfield support code (exfldio.c) to avoid the use
of a shift value larger than the target data width. The
behavior of C compilers is undefined in this case and can
cause unpredictable results, and therefore the case must
be detected and avoided.  (Fiodor Suietov)

Added an info message whenever an SSDT or OEM table
is loaded dynamically via the Load() or LoadTable()
ASL operators. This should improve debugging capability
since it will show exactly what tables have been loaded
(beyond the tables present in the RSDT/XSDT.)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 23 insertions, 26 deletions

diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c
index 35074399c617..e3ca7f6539c1 100644
--- a/drivers/acpi/dispatcher/dswload.c
+++ b/drivers/acpi/dispatcher/dswload.c
@@ -175,7 +175,7 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                 if (status == AE_NOT_FOUND) {
                         /*
                          * Table disassembly:
-                         * Target of Scope() not found.  Generate an External for it, and
+                         * Target of Scope() not found. Generate an External for it, and
                          * insert the name into the namespace.
                          */
                         acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0);
@@ -210,16 +210,15 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                 case ACPI_TYPE_BUFFER:
 
                         /*
-                         * These types we will allow, but we will change the type.  This
+                         * These types we will allow, but we will change the type. This
                          * enables some existing code of the form:
                          *
                          *  Name (DEB, 0)
                          *  Scope (DEB) { ... }
                          *
-                         * Note: silently change the type here.  On the second pass, we will report
+                         * Note: silently change the type here. On the second pass, we will report
                          * a warning
                          */
-
                         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                           "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n",
                                           path,
@@ -242,7 +241,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                 break;
 
         default:
-
                 /*
                  * For all other named opcodes, we will enter the name into
                  * the namespace.
@@ -259,7 +257,6 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                  *       buffer_field, or Package), the name of the object is already
                  *       in the namespace.
                  */
-
                 if (walk_state->deferred_node) {
 
                         /* This name is already in the namespace, get the node */
@@ -293,8 +290,8 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                 }
 
                 /*
-                 * Enter the named type into the internal namespace.  We enter the name
-                 * as we go downward in the parse tree.  Any necessary subobjects that
+                 * Enter the named type into the internal namespace. We enter the name
+                 * as we go downward in the parse tree. Any necessary subobjects that
                  * involve arguments to the opcode must be created as we go back up the
                  * parse tree later.
                  */
@@ -327,12 +324,12 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
                                                             (status);
                                                 }
                                         }
+
                                         status = AE_OK;
                                 }
                         }
 
                         if (ACPI_FAILURE(status)) {
-
                                 ACPI_ERROR_NAMESPACE(path, status);
                                 return_ACPI_STATUS(status);
                         }
@@ -434,9 +431,13 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
                         status =
                             acpi_ex_create_region(op->named.data,
                                                   op->named.length,
-                                                  (acpi_adr_space_type)
-                                                  ((op->common.value.arg)->
-                                                   common.value.integer),
+                                                  (acpi_adr_space_type) ((op->
+                                                                          common.
+                                                                          value.
+                                                                          arg)->
+                                                                         common.
+                                                                         value.
+                                                                         integer),
                                                   walk_state);
                         if (ACPI_FAILURE(status)) {
                                 return_ACPI_STATUS(status);
@@ -474,7 +475,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
                          * method_op pkg_length name_string method_flags term_list
                          *
                          * Note: We must create the method node/object pair as soon as we
-                         * see the method declaration.  This allows later pass1 parsing
+                         * see the method declaration. This allows later pass1 parsing
                          * of invocations of the method (need to know the number of
                          * arguments.)
                          */
@@ -499,6 +500,7 @@ acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
                                                                   length,
                                                                   walk_state);
                                 }
+
                                 walk_state->operands[0] = NULL;
                                 walk_state->num_operands = 0;
 
@@ -570,7 +572,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
 #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
                         if ((walk_state->op_info->class == AML_CLASS_EXECUTE) ||
                             (walk_state->op_info->class == AML_CLASS_CONTROL)) {
-
                                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
                                                   "Begin/EXEC: %s (fl %8.8X)\n",
                                                   walk_state->op_info->name,
@@ -602,7 +603,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
                 } else {
                         /* Get name from the op */
 
-                        buffer_ptr = (char *)&op->named.name;
+                        buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
                 }
         } else {
                 /* Get the namestring from the raw AML */
@@ -629,7 +630,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
                 break;
 
         case AML_INT_NAMEPATH_OP:
-
                 /*
                  * The name_path is an object reference to an existing object.
                  * Don't enter the name into the namespace, but look it up
@@ -642,7 +642,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
                 break;
 
         case AML_SCOPE_OP:
-
                 /*
                  * The Path is an object reference to an existing object.
                  * Don't enter the name into the namespace, but look it up
@@ -664,6 +663,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
 #endif
                         return_ACPI_STATUS(status);
                 }
+
                 /*
                  * We must check to make sure that the target is
                  * one of the opcodes that actually opens a scope
@@ -683,13 +683,12 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
                 case ACPI_TYPE_BUFFER:
 
                         /*
-                         * These types we will allow, but we will change the type.  This
+                         * These types we will allow, but we will change the type. This
                          * enables some existing code of the form:
                          *
                          *  Name (DEB, 0)
                          *  Scope (DEB) { ... }
                          */
-
                         ACPI_WARNING((AE_INFO,
                                       "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)",
                                       buffer_ptr,
@@ -729,14 +728,14 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
                                 if (ACPI_FAILURE(status)) {
                                         return_ACPI_STATUS(status);
                                 }
-
                         }
+
                         return_ACPI_STATUS(AE_OK);
                 }
 
                 /*
-                 * Enter the named type into the internal namespace.  We enter the name
-                 * as we go downward in the parse tree.  Any necessary subobjects that
+                 * Enter the named type into the internal namespace. We enter the name
+                 * as we go downward in the parse tree. Any necessary subobjects that
                  * involve arguments to the opcode must be created as we go back up the
                  * parse tree later.
                  *
@@ -787,7 +786,6 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
          * can get it again quickly when this scope is closed
          */
         op->common.node = node;
-
         return_ACPI_STATUS(status);
 }
 
@@ -922,7 +920,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
 #ifndef ACPI_NO_METHOD_EXECUTION
 
         case AML_TYPE_CREATE_FIELD:
-
                 /*
                  * Create the field object, but the field buffer and index must
                  * be evaluated later during the execution phase
@@ -931,7 +928,6 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
                 break;
 
         case AML_TYPE_NAMED_FIELD:
-
                 /*
                  * If we are executing a method, initialize the field
                  */
@@ -1051,6 +1047,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
                          * argument is the space_id. (We must save the address of the
                          * AML of the address and length operands)
                          */
+
                         /*
                          * If we have a valid region, initialize it
                          * Namespace is NOT locked at this point.
@@ -1080,7 +1077,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
                          * method_op pkg_length name_string method_flags term_list
                          *
                          * Note: We must create the method node/object pair as soon as we
-                         * see the method declaration.  This allows later pass1 parsing
+                         * see the method declaration. This allows later pass1 parsing
                          * of invocations of the method (need to know the number of
                          * arguments.)
                          */