This feature enabled by the following commit is still under development. Commit: cd52379678785b02d7a357988cfba214fdaf92f4 Subject: ACPICA: Add global option to disable method auto-serialization. This change adds an option to disable the auto-serialization of methods that create named objects.
This patch disables it by default temporarily according to the bug reports. References: http://www.spinics.net/lists/linux-acpi/msg49496.html Reported-by: Valdis Kletnieks <validis.kletni...@vt.edu> Reported-by: Sabrina Dubroka <s...@queasysnail.net> Signed-off-by: Lv Zheng <lv.zh...@intel.com> --- Documentation/kernel-parameters.txt | 8 ++++---- drivers/acpi/acpica/acglobal.h | 2 +- drivers/acpi/osl.c | 12 ++++++------ 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 91f0be8..a159537 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -229,13 +229,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. use by PCI Format: <irq>,<irq>... - acpi_no_auto_serialize [HW,ACPI] - Disable auto-serialization of AML methods + acpi_auto_serialize [HW,ACPI] + Enable auto-serialization of AML methods AML control methods that contain the opcodes to create named objects will be marked as "Serialized" by the auto-serialization feature. - This feature is enabled by default. - This option allows to turn off the feature. + This feature is disabled by default. + This option allows to turn on the feature. acpi_no_auto_ssdt [HW,ACPI] Disable automatic loading of SSDT diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 49bbc71..ea0f838 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -99,7 +99,7 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_enable_interpreter_slack, FALSE); * that create named objects are marked Serialized in order to prevent * possible run-time problems if they are entered by more than one thread. */ -ACPI_INIT_GLOBAL(u8, acpi_gbl_auto_serialize_methods, TRUE); +ACPI_INIT_GLOBAL(u8, acpi_gbl_auto_serialize_methods, FALSE); /* * Create the predefined _OSI method in the namespace? Default is TRUE diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index d40d6dc..928f0c2 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1538,20 +1538,20 @@ static int __init osi_setup(char *str) __setup("acpi_osi=", osi_setup); /* - * Disable the auto-serialization of named objects creation methods. + * Enable the auto-serialization of named objects creation methods. * - * This feature is enabled by default. It marks the AML control methods + * This feature is disabled by default. It marks the AML control methods * that contain the opcodes to create named objects as "Serialized". */ -static int __init acpi_no_auto_serialize_setup(char *str) +static int __init acpi_auto_serialize_setup(char *str) { - acpi_gbl_auto_serialize_methods = FALSE; - pr_info("ACPI: auto-serialization disabled\n"); + acpi_gbl_auto_serialize_methods = TRUE; + pr_info("ACPI: auto-serialization enabled\n"); return 1; } -__setup("acpi_no_auto_serialize", acpi_no_auto_serialize_setup); +__setup("acpi_auto_serialize", acpi_auto_serialize_setup); /* Check of resource interference between native drivers and ACPI * OperationRegions (SystemIO and System Memory only). -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
