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| author | Bob Moore <robert.moore@intel.com> | 2015-07-01 14:44:23 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-07-01 23:17:54 +0200 |
| commit | fe536995f2fe26fff111a9a06bf3f71e179c92cf (patch) | |
| tree | 3a5bc345631e851b0fc068dce8556b75ee41f73d | |
| parent | 8f6f03610483962a9ebfaf38592909a3f0bcfa53 (diff) | |
| download | linux-fe536995f2fe26fff111a9a06bf3f71e179c92cf.tar.bz2 | |
ACPICA: Namespace: Add support of OSDT table
ACPICA commit 27415c82fcecf467446f66d1007a0691cc5f3709
This patch adds OSDT (Override System Definition Table) support.
When OSDT is loaded, conflict namespace objects will be overridden
by the AML interpreter. Bob Moore, Lv Zheng.
Link: https://github.com/acpica/acpica/commit/27415c82
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/acpica/nsparse.c | 7 | ||||
| -rw-r--r-- | drivers/acpi/acpica/tbxfload.c | 6 | ||||
| -rw-r--r-- | drivers/acpi/acpica/utmisc.c | 3 | ||||
| -rw-r--r-- | include/acpi/actbl.h | 1 |
4 files changed, 15 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c index c95a119767b5..57a4cfe547e4 100644 --- a/drivers/acpi/acpica/nsparse.c +++ b/drivers/acpi/acpica/nsparse.c @@ -117,6 +117,13 @@ acpi_ns_one_complete_parse(u32 pass_number, (u8) pass_number); } + /* Found OSDT table, enable the namespace override feature */ + + if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT) && + pass_number == ACPI_IMODE_LOAD_PASS1) { + walk_state->namespace_override = TRUE; + } + if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c index b63e35d6d1bf..960bd999a6b3 100644 --- a/drivers/acpi/acpica/tbxfload.c +++ b/drivers/acpi/acpica/tbxfload.c @@ -173,7 +173,11 @@ static acpi_status acpi_tb_load_namespace(void) && !ACPI_COMPARE_NAME(& (acpi_gbl_root_table_list.tables[i]. - signature), ACPI_SIG_PSDT)) + signature), ACPI_SIG_PSDT) + && + !ACPI_COMPARE_NAME(& + (acpi_gbl_root_table_list.tables[i]. + signature), ACPI_SIG_OSDT)) || ACPI_FAILURE(acpi_tb_validate_table (&acpi_gbl_root_table_list.tables[i]))) { diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c index cbb7034d28d8..28099e230008 100644 --- a/drivers/acpi/acpica/utmisc.c +++ b/drivers/acpi/acpica/utmisc.c @@ -97,7 +97,8 @@ u8 acpi_ut_is_aml_table(struct acpi_table_header *table) if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) || ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) || - ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) { + ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT) || + ACPI_COMPARE_NAME(table->signature, ACPI_SIG_OSDT)) { return (TRUE); } diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index cb8a6b97ceda..2d5faf508cad 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -65,6 +65,7 @@ #define ACPI_SIG_DSDT "DSDT" /* Differentiated System Description Table */ #define ACPI_SIG_FADT "FACP" /* Fixed ACPI Description Table */ #define ACPI_SIG_FACS "FACS" /* Firmware ACPI Control Structure */ +#define ACPI_SIG_OSDT "OSDT" /* Override System Description Table */ #define ACPI_SIG_PSDT "PSDT" /* Persistent System Description Table */ #define ACPI_SIG_RSDP "RSD PTR " /* Root System Description Pointer */ #define ACPI_SIG_RSDT "RSDT" /* Root System Description Table */ |