diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-09-12 21:54:53 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-15 12:20:12 +0200 |
| commit | feb8ae81b2378b75a99c81d315602ac8918ed382 (patch) | |
| tree | 7547b4a78596520ce9720a16849dee823afdce70 | |
| parent | 9d2f57fee5a0bf5b3f7ef690ba90d8d8ba1c0c96 (diff) | |
ACPICA: Allow to skip Global Lock initialization
Introduce acpi_gbl_use_global_lock, which allows to skip the Global Lock
initialization. This is useful for systems without Global Lock (such as
loong_arch), so as to avoid error messages during boot phase:
ACPI Error: Could not enable global_lock event (20240827/evxfevnt-182)
ACPI Error: No response from Global Lock hardware, disabling lock (20240827/evglock-59)
Link: https://github.com/acpica/acpica/commit/463cb0fe
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/acpica/evglock.c | 4 | ||||
| -rw-r--r-- | include/acpi/acpixf.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c index fa3e0d00d1ca..df2a4ab0e0da 100644 --- a/drivers/acpi/acpica/evglock.c +++ b/drivers/acpi/acpica/evglock.c @@ -42,6 +42,10 @@ acpi_status acpi_ev_init_global_lock_handler(void) return_ACPI_STATUS(AE_OK); } + if (!acpi_gbl_use_global_lock) { + return_ACPI_STATUS(AE_OK); + } + /* Attempt installation of the global lock handler */ status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL, diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index b49396aa4058..97c25ae8a36e 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -214,6 +214,12 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_osi_data, 0); ACPI_INIT_GLOBAL(u8, acpi_gbl_reduced_hardware, FALSE); /* + * ACPI Global Lock is mainly used for systems with SMM, so no-SMM systems + * (such as loong_arch) may not have and not use Global Lock. + */ +ACPI_INIT_GLOBAL(u8, acpi_gbl_use_global_lock, TRUE); + +/* * Maximum timeout for While() loop iterations before forced method abort. * This mechanism is intended to prevent infinite loops during interpreter * execution within a host kernel. |