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| author | Len Brown <len.brown@intel.com> | 2009-04-05 01:50:46 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-04-05 01:50:46 -0400 |
| commit | 3b4dadf05d177289c279c50030c7c75e004952bb (patch) | |
| tree | 5ee1a21f5dd3d4682e7ed9f92ba97fa4a507f62f | |
| parent | 59b17bf6ea06abed519dfc788fff1b6b9499d23f (diff) | |
| parent | 7e90560c50f754d65884e251e94c1efa2a4b5784 (diff) | |
Merge branch 'acpi_enforce_resources' into release
| -rw-r--r-- | Documentation/kernel-parameters.txt | 16 | ||||
| -rw-r--r-- | drivers/acpi/osl.c | 6 |
2 files changed, 19 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 54f21a5c262..7068d0bc47c 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -258,6 +258,22 @@ and is between 256 and 4096 characters. It is defined in the file to assume that this machine's pmtimer latches its value and always returns good values. + acpi_enforce_resources= [ACPI] + { strict | lax | no } + Check for resource conflicts between native drivers + and ACPI OperationRegions (SystemIO and SystemMemory + only). IO ports and memory declared in ACPI might be + used by the ACPI subsystem in arbitrary AML code and + can interfere with legacy drivers. + strict (default): access to resources claimed by ACPI + is denied; legacy drivers trying to access reserved + resources will fail to bind to device using them. + lax: access to resources claimed by ACPI is allowed; + legacy drivers trying to access reserved resources + will bind successfully but a warning message is logged. + no: ACPI OperationRegions are not marked as reserved, + no further checks are performed. + agp= [AGP] { off | try_unsupported } off: disable AGP support diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 1e35f342957..f50ca1ea80c 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -1063,9 +1063,9 @@ __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); * in arbitrary AML code and can interfere with legacy drivers. * acpi_enforce_resources= can be set to: * - * - strict (2) + * - strict (default) (2) * -> further driver trying to access the resources will not load - * - lax (default) (1) + * - lax (1) * -> further driver trying to access the resources will load, but you * get a system message that something might go wrong... * @@ -1077,7 +1077,7 @@ __setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup); #define ENFORCE_RESOURCES_LAX 1 #define ENFORCE_RESOURCES_NO 0 -static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_LAX; +static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT; static int __init acpi_enforce_resources_setup(char *str) { |