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Merge branch 'acpi_enforce_resources' into release

This commit is contained in:
Len Brown 2009-04-05 01:50:46 -04:00
parent 59b17bf6ea 7e90560c50
commit 3b4dadf05d
2 changed files with 19 additions and 3 deletions
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16
Documentation/kernel-parameters.txt
View File

@ -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

6
drivers/acpi/osl.c
View File

@ -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)
{