diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2015-07-01 14:43:26 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-03 09:29:46 -0700 |
| commit | a73aa5b5c7fff1778c5649c85b1b41d086c0d539 (patch) | |
| tree | 90504161aafb81ab4f9d3d74cf3449346313f6d8 | |
| parent | 7546f8cb2dff62ad20c50bf3d6170ad8dadb9cc8 (diff) | |
ACPICA: Tables: Fix an issue that FACS initialization is performed twice
commit c04be18448355441a0c424362df65b6422e27bda upstream.
ACPICA commit 90f5332a15e9d9ba83831ca700b2b9f708274658
This patch adds a new FACS initialization flag for acpi_tb_initialize().
acpi_enable_subsystem() might be invoked several times in OS bootup process,
and we don't want FACS initialization to be invoked twice. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/90f5332a
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/acpi/acpica/utxfinit.c | 10 | ||||
| -rw-r--r-- | include/acpi/actypes.h | 1 |
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c index 41ebaaf8bb1a..ee58a62443bd 100644 --- a/drivers/acpi/acpica/utxfinit.c +++ b/drivers/acpi/acpica/utxfinit.c @@ -165,10 +165,12 @@ acpi_status acpi_enable_subsystem(u32 flags) * Obtain a permanent mapping for the FACS. This is required for the * Global Lock and the Firmware Waking Vector */ - status = acpi_tb_initialize_facs(); - if (ACPI_FAILURE(status)) { - ACPI_WARNING((AE_INFO, "Could not map the FACS table")); - return_ACPI_STATUS(status); + if (!(flags & ACPI_NO_FACS_INIT)) { + status = acpi_tb_initialize_facs(); + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, "Could not map the FACS table")); + return_ACPI_STATUS(status); + } } #endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index f819e813c8ac..4407354c7d6a 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -511,6 +511,7 @@ typedef u64 acpi_integer; #define ACPI_NO_ACPI_ENABLE 0x10 #define ACPI_NO_DEVICE_INIT 0x20 #define ACPI_NO_OBJECT_INIT 0x40 +#define ACPI_NO_FACS_INIT 0x80 /* * Initialization state |