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| author | Lv Zheng <lv.zheng@intel.com> | 2015-07-01 09:43:26 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-07-02 00:17:52 +0300 |
| commit | c04be18448355441a0c424362df65b6422e27bda (patch) | |
| tree | 4171d07167bb7a8c2e527f58813e1c2fa40fd1f0 /drivers/acpi | |
| parent | f06147f9fbf134c0258bd53aebeb4ed5efea5a25 (diff) | |
| download | linux-c04be18448355441a0c424362df65b6422e27bda.tar.xz | |
ACPICA: Tables: Fix an issue that FACS initialization is performed twice
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
Cc: All applicable <stable@vger.kernel.org> # All applicable
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>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/utxfinit.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c index 083a76891889..42a32a66ef22 100644 --- a/drivers/acpi/acpica/utxfinit.c +++ b/drivers/acpi/acpica/utxfinit.c @@ -179,10 +179,12 @@ acpi_status __init 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 */ |