diff options
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/aclocal.h | 1 | ||||
| -rw-r--r-- | drivers/acpi/acpica/nsaccess.c | 27 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 2a8394fe199e..8ddd3b20e0c6 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -1181,6 +1181,7 @@ struct acpi_external_list { #define ACPI_EXT_INTERNAL_PATH_ALLOCATED 0x04 /* Deallocate internal path on completion */ #define ACPI_EXT_EXTERNAL_EMITTED 0x08 /* External() statement has been emitted */ #define ACPI_EXT_ORIGIN_FROM_OPCODE 0x10 /* External came from a External() opcode */ +#define ACPI_EXT_CONFLICTING_DECLARATION 0x20 /* External has a conflicting declaration within AML */ struct acpi_external_file { char *path; diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c index fb265b5737de..e5f4fa496572 100644 --- a/drivers/acpi/acpica/nsaccess.c +++ b/drivers/acpi/acpica/nsaccess.c @@ -47,6 +47,10 @@ #include "acnamesp.h" #include "acdispat.h" +#ifdef ACPI_ASL_COMPILER +#include "acdisasm.h" +#endif + #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME("nsaccess") @@ -580,6 +584,29 @@ acpi_ns_lookup(union acpi_generic_state *scope_info, (char *)¤t_node->name, current_node)); } +#ifdef ACPI_ASL_COMPILER + /* + * If this ACPI name already exists within the namespace as an + * external declaration, then mark the external as a conflicting + * declaration and proceed to process the current node as if it did + * not exist in the namespace. If this node is not processed as + * normal, then it could cause improper namespace resolution + * by failing to open a new scope. + */ + if (acpi_gbl_disasm_flag && + (status == AE_ALREADY_EXISTS) && + ((this_node->flags & ANOBJ_IS_EXTERNAL) || + (walk_state + && walk_state->opcode == AML_EXTERNAL_OP))) { + this_node->flags &= ~ANOBJ_IS_EXTERNAL; + this_node->type = (u8)this_search_type; + if (walk_state->opcode != AML_EXTERNAL_OP) { + acpi_dm_mark_external_conflict + (this_node); + } + break; + } +#endif *return_node = this_node; return_ACPI_STATUS(status); |